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New energy storage

Plastic materials for energy storage systems, portable power stations and charging equipment

All materials · 8 grades

Parts and materials of the portable power station

Pain points and material advice

  • Near the cells: flame retardancy at thin walls

    Pain point
    Cells are getting larger and more densely packed, and brackets and separators are getting thinner. Many materials reach V-0 at 1.5 mm but not at 0.8 mm.
    Advice
    First set the flammability target at the thinnest point. PC and PC/ABS systems char easily when burning, so they reach V-0 halogen-free fairly easily. When thinner walls are needed, choose high-flow grades and validate with specimens at the actual wall thickness.
    Candidates

  • High-voltage areas: CTI and glow-wire

    Pain point
    As storage system voltages rise to the 1000–1500 V class, busbar holders, connectors and sensing assemblies become more sensitive to creepage distance and tracking.
    Advice
    State the CTI target (tested to IEC 60112) and glow-wire requirements (GWFI / GWIT) in the material specification. Reinforced PA and PBT usually reach a high CTI more easily than amorphous materials. Both color and flame retardant affect CTI, so test in the actual color.
    Candidates

  • Structural parts: stiffness, creep and swelling force

    Pain point
    Cells swell during charge, discharge and aging. End plates and side plates carry loads long-term and creep easily.
    Advice
    Choose glass-fiber-reinforced materials and check creep against long-term load and operating temperature. Watch the anisotropy from fiber orientation, and design the gate position together with the load direction. Nylon absorbs moisture, so use conditioned values for design.
    Candidates

  • Outdoor and residential: weathering, appearance and drop

    Pain point
    Outdoor cabinets face sun for years, and standard ABS and PC/ABS yellow and become brittle. Residential and portable products need good appearance and must also pass drop tests.
    Advice
    Set xenon-arc weathering tests for outdoor parts by target region, and judge by color difference and impact retention after aging. For portable products, look at both room- and low-temperature notched impact. Color match appearance parts at the compounding stage, which is more even than adding masterbatch at molding.
    Candidates

  • Sustainability: halogen-free, fluorine-free and recycled content

    Pain point
    Export brands require halogen-free; some customers require no PTFE anti-drip agent; brands also want more recycled content.
    Advice
    Halogen-free is usually judged against the halogen limits of IEC 61249-2-21 or your specification, and needs a third-party test report. Fluorine-free needs a clear statement on whether PTFE is allowed. Recycled material brings batch variation, so validate several batches before introducing it into mass production.
    Candidates

Material selection for plastic parts in energy storage systems (utility, C&I and residential), portable power stations, power banks, PCS / inverters and charging equipment.

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Materials in the portable power station

Example grade / typical values — to be corrected by GREENPOLYMER Typical values. Refer to the actual TDS.

  • GRN-PPE-N510

    Halogen-free flame-retardant mPPE

    Tensile strengthISO 527-1/-2
    50–65 MPa
    Flammability ratingUL 94 · 1.5 mm; design target, subject to test report
    V-0
    Charpy notched impact strengthISO 179-1/1eA · 23 °C
    8–15 kJ/m²

    Used for

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    Features

    Low density, dimensionally stable, halogen-free flame-retardant

    Typical values

    Heat deflection temperatureISO 75-1/-2 · 1.80 MPa
    90–120 °C
    DensityISO 1183
    1.06–1.12 g/cm³

    Processing

    Drying
    100–110 °C, 2–4 h
    Melt temperature
    260–300 °C
    Mold temperature
    70–100 °C

    Why this material

    • Good flow for thin-wall structures with many holes; dimensionally stable; electrically insulating

  • GRN-PBT-E510

    Flame-retardant glass-fiber-reinforced PBT (high CTI)

    Tensile strengthISO 527-1/-2
    100–130 MPa
    Comparative tracking index (CTI)IEC 60112 · design target
    ≥ 600 V
    Flammability ratingUL 94 · 1.5 mm; design target, subject to test report
    V-0

    Used for

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    Features

    Good electrical insulation, low warpage

    Typical values

    Flexural modulusISO 178
    8–10 GPa
    Heat deflection temperatureISO 75-1/-2 · 1.80 MPa
    200–215 °C
    Charpy notched impact strengthISO 179-1/1eA · 23 °C
    6–10 kJ/m²
    DensityISO 1183
    1.55–1.70 g/cm³

    Processing

    Drying
    120 °C, 3–4 h (desiccant dryer); moisture content ≤ 0.02 %
    Melt temperature
    240–270 °C
    Mold temperature
    60–90 °C; upper end when surface and dimensional stability matter

    Why this material

    • Dimensionally stable, suits heat staking and laser welding; insulating

  • GRN-PA66-E510

    Halogen-free flame-retardant glass-fiber-reinforced PA66

    Tensile strengthISO 527-1/-2 · dry
    140–170 MPa
    Flammability ratingUL 94 · 1.5 mm; design target, subject to test report
    V-0
    Flexural modulusISO 178
    8–10 GPa

    Used for

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    Features

    Heat-resistant, strong, halogen-free flame-retardant

    Typical values

    Heat deflection temperatureISO 75-1/-2 · 1.80 MPa
    230–250 °C
    Charpy notched impact strengthISO 179-1/1eA · 23 °C; dry
    8–12 kJ/m²
    DensityISO 1183
    1.45–1.55 g/cm³

    Processing

    Drying
    80 °C, 4–6 h (desiccant dryer); moisture content 0.05–0.2 % recommended
    Melt temperature
    280–300 °C; do not exceed the TDS upper limit for flame-retardant grades
    Mold temperature
    80–110 °C

    Why this material

    • Busbar holder / busbar insulationHeat resistant, strong, high CTI; can overmold copper busbars
    • Connector housingHigh dimensional accuracy, heat resistant, high CTI; high-voltage parts are often orange
    • Module end plate / side plateStiff and creep resistant, withstands cell swelling forces; can replace some metal parts

  • GRN-PC-N510

    Halogen-free flame-retardant PC

    Tensile strengthISO 527-1/-2
    60–68 MPa
    Flammability ratingUL 94 · 1.5 mm; design target, subject to test report
    V-0
    Charpy notched impact strengthISO 179-1/1eA · 23 °C
    20–50 kJ/m²

    Used for

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    Features

    Light, insulating, halogen-free

    Typical values

    Heat deflection temperatureISO 75-1/-2 · 1.80 MPa
    115–128 °C
    DensityISO 1183
    1.20–1.24 g/cm³

    Processing

    Drying
    120 °C, 3–4 h; moisture content ≤ 0.02 % recommended
    Melt temperature
    280–310 °C; for flame-retardant grades keep within the TDS upper limit
    Mold temperature
    80–110 °C

    Why this material

    • Insulation sheet / barrierThin, light and insulating; can be die-cut or molded
    • PCS / inverter housing parts (front cover, display bezel, terminal cover)Heat and impact resistant; outdoor models need UV resistance

  • GRN-PCA-N510

    Halogen-free flame-retardant PC/ABS

    Tensile strengthISO 527-1/-2
    55–65 MPa
    Flammability ratingUL 94 · 1.5 mm; design target, subject to test report
    V-0
    Charpy notched impact strengthISO 179-1/1eA · 23 °C
    10–30 kJ/m²

    Used for

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    Features

    Flame-retardant, insulating, impact-resistant

    Typical values

    Heat deflection temperatureISO 75-1/-2 · 1.80 MPa
    80–95 °C
    DensityISO 1183
    1.17–1.20 g/cm³

    Processing

    Drying
    100–110 °C, 3–4 h
    Melt temperature
    250–280 °C
    Mold temperature
    60–90 °C

    Why this material

    • BMS housing / high-voltage box housingFlame retardant, insulating and impact resistant; suits snap fits and screw bosses
    • Portable power station / power bank housing, panel, handleBalance of flame retardancy and toughness; good appearance, mold-in-color (paint-free) possible
    • Residential / C&I ESS enclosure parts (top cover, frame, front panel)Large parts need low warpage; flame retardancy; good appearance
    • Cable trunking / wiring duct inside the cabinetSimple to mold, low cost; replaces PVC when flame retardancy and halogen-free are needed

  • GRN-PP-N510

    Halogen-free flame-retardant PP

    Tensile strengthISO 527-1/-2
    20–28 MPa
    Flammability ratingUL 94 · 1.5 mm; design target, subject to test report
    V-0
    Charpy notched impact strengthISO 179-1/1eA · 23 °C
    3–6 kJ/m²

    Used for

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    Features

    Halogen-free flame-retardant, low density, low cost

    Typical values

    Heat deflection temperatureISO 75-1/-2 · 1.80 MPa
    55–65 °C
    DensityISO 1183
    1.00–1.10 g/cm³

    Processing

    Drying
    Usually not needed; if damp, 80 °C, 1–2 h
    Melt temperature
    190–220 °C (not too high for flame-retardant grades)
    Mold temperature
    30–60 °C

    Why this material

    • Easy to mold, controlled cost; flame retardancy needed near fan motors

  • GRN-ABS-F510

    Flame-retardant ABS

    Tensile strengthISO 527-1/-2
    38–45 MPa
    Flammability ratingUL 94 · 1.5 mm; design target, subject to test report
    V-0
    Charpy notched impact strengthISO 179-1/1eA · 23 °C
    8–15 kJ/m²

    Used for

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    Features

    Easy to mold, controlled cost

    Typical values

    Heat deflection temperatureISO 75-1/-2 · 1.80 MPa
    75–85 °C
    DensityISO 1183
    1.16–1.20 g/cm³

    Processing

    Drying
    80–85 °C, 2–4 h; moisture content below 0.1 % recommended
    Melt temperature
    210–250 °C; flame-retardant grades at the lower end, usually not above 230 °C
    Mold temperature
    40–80 °C; upper end for high-gloss parts

    Why this material

    • Easy to mold, controlled cost; flame retardancy needed near fan motors

  • GRN-PCA-W310

    Weather-resistant PC/ABS

    Tensile strengthISO 527-1/-2
    50–58 MPa
    Weathering (color difference)ISO 4892-2 · Xenon-arc 1000 h; design target
    ΔE ≤ 3
    Charpy notched impact strengthISO 179-1/1eA · 23 °C
    35–55 kJ/m²

    Used for

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    Features

    UV-resistant, color-stable, resists yellowing

    Typical values

    Heat deflection temperatureISO 75-1/-2 · 1.80 MPa
    95–110 °C
    DensityISO 1183
    1.12–1.16 g/cm³
    Flammability ratingUL 94 · 1.5 mm; design target, subject to test report
    HB

    Processing

    Drying
    100–110 °C, 3–4 h
    Melt temperature
    250–280 °C
    Mold temperature
    60–90 °C

    Why this material

    • UV resistant, color stable, resists yellowing

Industry overview and trends

  • Energy storage is entering large-scale deployment

    In 2025, new energy storage installed worldwide (excluding pumped hydro) exceeded 100 GW, about 300 GWh, up more than 40 % on the previous year. The industry expects further growth in 2026. China accounts for more than half of new installations worldwide.

  • Battery technology is mainly LFP

    Lithium iron phosphate (LFP) batteries make up about 90 % of new energy storage projects. LFP is low cost with long cycle life, suiting storage that charges and discharges every day.

  • Larger cells, more compact systems

    Energy storage cells have moved from the 280 Ah class to the 314 Ah class and are now heading above 500 Ah. One 20-foot container already holds more than 6 MWh. With larger, more densely packed cells, brackets, end plates and insulating parts must carry more weight and swelling force while getting thinner.

  • Safety standards keep tightening

    Mandatory safety standards for energy storage batteries are in force. Overseas projects generally require system-level certification and thermal runaway propagation tests. Plastic parts are not the source of thermal runaway, but they affect flame spread, electrical insulation and structural integrity. So project owners are writing material flammability, comparative tracking index (CTI) and glow-wire performance into material specifications ever earlier.

  • Environmental requirements are rising

    Export brands generally require halogen-free flame retardancy. The EU is reviewing a universal PFAS restriction proposal under REACH (still a proposal as of October 2026, not yet adopted). The commonly used PTFE anti-drip agent is a fluoropolymer and is therefore drawing attention, and some customers have started to require "halogen-free and fluorine-free". Brands' carbon reduction targets are also driving the use of post-consumer recycled material (PCR).

  • Residential and portable products care more about appearance and feel

    Residential storage units and portable power stations sit in homes or cars. Housings must be flame-retardant and drop-resistant, with uniform color and a fine surface finish. Outdoor cabinets also need long-term resistance to sunlight, heat and humidity.

  • Energy storage is now deployed at large scale. In 2025, global new storage additions (excluding pumped hydro) exceeded 100 GW, about 300 GWh. This is more than 40 % higher than the year before.
  • Cells are getting larger. Cell capacity has moved from the 280 Ah class to the 314 Ah class and is now moving above 500 Ah.
  • Safety standards are getting stricter. Plastic parts do not start thermal runaway. But they affect flame spread, electrical insulation and structural integrity.
  • Many export brands ask for halogen-free flame retardants. The EU is reviewing a universal PFAS restriction proposal under REACH. As of October 2026 it is still a proposal. Some customers now also ask for fluorine-free grades (no PTFE anti-drip agent).
  • Residential and portable products need flame retardancy, drop resistance and good appearance. Outdoor cabinets need UV and humidity resistance.

Part-to-material guide

Full list · 14 parts

This table shows common industry practice for first-round selection. The final choice depends on the applicable standards, the actual wall thickness and validation results (to be verified by GREENPOLYMER).

Cell holder (cylindrical / prismatic)

Typical materials: Flame-retardant PC/ABS, flame-retardant PC, flame-retardant mPPE (commonly called PPO)
Why

Good flow for thin-wall structures with many holes; dimensionally stable; electrically insulating

Key requirements

Thin-wall flame retardancy (V-0 @ actual wall thickness); HDT; dimensional stability; halogen-free

Common standards

UL 94; GB/T 2408; UL 746B (RTI)

GREENPOLYMER grade

GRN-PCA-N510; GRN-PCA-S520 (halogen-free, without PTFE anti-drip agent); GRN-PC-N510; GRN-PPE-N510 (halogen-free flame-retardant mPPE, commonly called PPO; low density)

Example grade / typical values — to be corrected by GREENPOLYMER

Module end plate / side plate

Typical materials: Flame-retardant PA66-GF, flame-retardant PA6-GF, flame-retardant PC/ABS-GF
Why

Stiff and creep resistant, withstands cell swelling forces; can replace some metal parts

Key requirements

Flexural modulus; long-term creep resistance; V-0; low coefficient of linear thermal expansion

Common standards

UL 94; ISO 178; ISO 75

Example grade / typical values — to be corrected by GREENPOLYMER

Wiring harness isolation plate / cell-contact system carrier

Typical materials: Flame-retardant PC, flame-retardant PBT-GF, flame-retardant PA66-GF
Why

Dimensionally stable, suits heat staking and laser welding; insulating

Key requirements

High CTI; thin-wall V-0; low warpage; heat resistance

Common standards

IEC 60112 (CTI); UL 94; UL 746A

GREENPOLYMER grade

GRN-PC-N510; GRN-PC-S520; GRN-PBT-E510 (high CTI). CTI values of each grade to be verified by GREENPOLYMER

Example grade / typical values — to be corrected by GREENPOLYMER

Busbar holder / busbar insulation

Typical materials: Flame-retardant PA66-GF, flame-retardant PBT-GF, flame-retardant PA6-GF
Why

Heat resistant, strong, high CTI; can overmold copper busbars

Key requirements

High CTI; V-0; thermal shock resistance (thermal expansion matched to copper); GWIT

Common standards

IEC 60112; UL 94; IEC 60695-2-13 (GWIT)

GREENPOLYMER grade

GRN-PA66-E510; GRN-PBT-E510 (high CTI); GRN-PA6-E510. CTI values to be verified by GREENPOLYMER

Example grade / typical values — to be corrected by GREENPOLYMER

Insulation sheet / barrier

Typical materials: Flame-retardant PC, flame-retardant PP, flame-retardant PC/ABS (injection molded or extruded sheet)
Why

Thin, light and insulating; can be die-cut or molded

Key requirements

Very thin-wall flame retardancy (such as 0.4–1.0 mm); dielectric strength; CTI; halogen-free

Common standards

UL 94; IEC 60243-1 (dielectric strength); IEC 60112

GREENPOLYMER grade

Molded parts: GRN-PC-N510, GRN-PC-S520, GRN-PP-N510. Dedicated sheet compounds: Available as a project-based development

Example grade / typical values — to be corrected by GREENPOLYMER

BMS housing / high-voltage box housing

Typical materials: Flame-retardant PC/ABS, flame-retardant PC, flame-retardant PA6-GF
Why

Flame retardant, insulating and impact resistant; suits snap fits and screw bosses

Key requirements

V-0; GWFI / GWIT (where applicable); CTI; crack-resistant screw bosses

Common standards

UL 94; IEC 60695-2-12 / -13; IEC 60112

Example grade / typical values — to be corrected by GREENPOLYMER

Connector housing

Typical materials: Flame-retardant PA66-GF, flame-retardant PBT-GF, flame-retardant PA6-GF
Why

High dimensional accuracy, heat resistant, high CTI; high-voltage parts are often orange

Key requirements

High CTI; V-0 @ thin wall; GWIT; stable color (high-voltage orange)

Common standards

UL 94; IEC 60112; IEC 60695-2-13; IEC 61984 (connectors)

GREENPOLYMER grade

GRN-PA66-E510; GRN-PBT-E510 (high CTI); GRN-PA6-E510. Orange can be color matched; CTI values to be verified by GREENPOLYMER

Example grade / typical values — to be corrected by GREENPOLYMER

Fan shroud / air duct

Typical materials: Flame-retardant PC/ABS, flame-retardant ABS, flame-retardant PP
Why

Easy to mold, controlled cost; flame retardancy needed near fan motors

Key requirements

V-0 or V-1; HDT; dimensional stability

Common standards

UL 94; GB/T 2408

GREENPOLYMER grade

GRN-ABS-F510 (conventional flame retardant, not halogen-free); GRN-PCA-N510 (halogen-free); GRN-PP-N510 (halogen-free flame-retardant PP)

Example grade / typical values — to be corrected by GREENPOLYMER

PCS / inverter housing parts (front cover, display bezel, terminal cover)

Typical materials: Flame-retardant PC, flame-retardant PC/ABS, weather-resistant PC/ABS
Why

Heat and impact resistant; outdoor models need UV resistance

Key requirements

V-0 or 5VA (per enclosure requirements); UV and outdoor suitability (f1); low-temperature impact

Common standards

UL 94; UL 746C; IEC 62477-1; IEC 62109-1 (PV inverters)

GREENPOLYMER grade

GRN-PC-N510; GRN-PCA-N510; indoor appearance parts can use GRN-PCA-W310 (HB, non-flame-retardant). Outdoor weather resistance + flame retardancy: Available as a project-based development

Example grade / typical values — to be corrected by GREENPOLYMER

Residential / C&I ESS enclosure parts (top cover, frame, front panel)

Typical materials: Flame-retardant PC/ABS, flame-retardant PC/ABS-GF, flame-retardant PP-GF
Why

Large parts need low warpage; flame retardancy; good appearance

Key requirements

5VA or V-0 (per enclosure requirements); impact; warpage of large parts; consistent color

Common standards

UL 746C; UL 94; UL 1973; UL 9540; IEC 62619; GB 44240; GB 40165 (residential ESS)

GREENPOLYMER grade

GRN-PCA-N510; GRN-PCA-S520; GRN-PCA-E510; GRN-PP-E510 (flame-retardant glass fiber PP)

Example grade / typical values — to be corrected by GREENPOLYMER

Portable power station / power bank housing, panel, handle

Typical materials: Halogen-free flame-retardant PC/ABS, flame-retardant PC; high-impact PC/ABS for handles
Why

Balance of flame retardancy and toughness; good appearance, mold-in-color possible

Key requirements

V-0 @ thin wall; room- and low-temperature impact; drop; no flow marks on the surface; halogen-free

Common standards

UL 94; UL 2743 (portable power packs); IEC 62368-1; IEC 62133-2 (batteries); GB 47372-2026 (portable power stations)

GREENPOLYMER grade

GRN-PCA-N510; GRN-PCA-N520 (thin wall, high flow); GRN-PCA-S520; handles (when flame retardancy is not required): GRN-PCA-H320

Example grade / typical values — to be corrected by GREENPOLYMER

Cable trunking / wiring duct inside the cabinet

Typical materials: Flame-retardant PC/ABS, flame-retardant PP, flame-retardant PVC (traditional)
Why

Simple to mold, low cost; replaces PVC when flame retardancy and halogen-free are needed

Key requirements

V-0 or V-1; halogen-free; heat resistance; snap-fit toughness

Common standards

IEC 61084-1; UL 94

GREENPOLYMER grade

GRN-PCA-N510 (halogen-free); GRN-PP-N510 (halogen-free flame-retardant PP)

Example grade / typical values — to be corrected by GREENPOLYMER

Outdoor cabinet trim (handle base, vent louver, nameplate frame, trim strip)

Typical materials: ASA, PC/ASA, weather-resistant PC/ABS
Why

UV resistant, color stable, resists yellowing

Key requirements

Color difference and impact retention after xenon-arc weathering; low-temperature impact

Common standards

ISO 4892-2; UL 746C (f1)

GREENPOLYMER grade

GRN-PCA-W310 (design target: ΔE ≤ 3 after 1000 h of xenon-arc weathering, to be verified by GREENPOLYMER). GRN-ASA-W110 (weather-resistant ASA); GRN-PCAS-W310 (weather-resistant PC/ASA)

Example grade / typical values — to be corrected by GREENPOLYMER

EV charger housing / charging gun handle

Typical materials: Flame-retardant PC, flame-retardant PC/ABS, flame-retardant PA6-GF (parts inside the connector head)
Why

Outdoor use, impact and low-temperature resistant; the connector head is close to terminals, so heat resistance and high CTI are needed

Key requirements

V-0; low-temperature impact (such as −30 °C); UV; CTI; chemical resistance

Common standards

UL 94; UL 746C; IEC 62196-1; GB/T 20234.1

GREENPOLYMER grade

Housing: GRN-PC-N510, GRN-PCA-N510; parts inside the connector head: GRN-PA6-E510. Weather-resistant flame-retardant PC: Available as a project-based development

Example grade / typical values — to be corrected by GREENPOLYMER

Notes

  • A flammability rating is valid only at the stated thickness. Check the thinnest wall of the part.
  • UL 9540, UL 1973, IEC 62619 and GB 44240 apply to the battery or the system, not to the material itself. For the enclosure flammability requirement of GB 44240, see its clause 9.2.
  • UL 9540A is a test method for thermal runaway fire propagation. It is done at cell, module or unit level.
  • Carbon-fiber-reinforced grades may conduct electricity. Do not use them as insulators without checking.

GREENPOLYMER grades for new energy storage

GradeMaterialRecommended partsFlammability (target)HDT 1.80 MPaNotched impact
GRN-PCA-N510Halogen-free flame-retardant PC/ABSCell holders, portable power station housings, BMS housings, cable ductsV-0 @ 1.5 mm80–95 °C10–30 kJ/m²
GRN-PCA-N520Halogen-free flame-retardant PC/ABS (thin wall, high flow)Thin-wall housings, power bank housingsV-0 @ 1.0 mm75–88 °C8–20 kJ/m²
GRN-PCA-S520Silicone-based flame-retardant PC/ABS (without PTFE anti-drip agent)Housings and brackets that must be halogen-free and fluorine-freeV-0 @ 1.5 mm85–100 °C15–40 kJ/m²
GRN-PC-N510Halogen-free flame-retardant PCHeat-resistant brackets, insulating parts, PCS housing parts, charging station housingsV-0 @ 1.5 mm115–128 °C20–50 kJ/m²
GRN-PC-S520Silicone-based flame-retardant PC (without PTFE anti-drip agent)Parts that must be halogen-free and fluorine-free with higher heat resistanceV-0 @ 1.5 mm118–130 °C35–60 kJ/m²
GRN-PCA-E510Flame-retardant glass-fiber-reinforced PC/ABSModule structural parts, end plates, enclosure framesV-0 @ 1.5 mm100–120 °C6–12 kJ/m²
GRN-PA6-E510Flame-retardant glass-fiber-reinforced PA6End plates, busbar holders, connectors, parts inside the connector headV-0 @ 1.5 mm190–205 °C8–12 kJ/m² (dry)
GRN-PA66-E510Halogen-free flame-retardant glass-fiber-reinforced PA66End plates, busbar holders, connector housingsV-0 @ 1.5 mm230–250 °C8–12 kJ/m² (dry)
GRN-PBT-E510Flame-retardant glass-fiber-reinforced PBT (high CTI)Sensing assembly holders, busbar holders, connector housingsV-0 @ 1.5 mm200–215 °C6–10 kJ/m²
GRN-PPE-N510Halogen-free flame-retardant mPPE (commonly called PPO)Cell holders, insulating parts (low density and hydrolysis resistance needed)V-0 @ 1.5 mm90–120 °C8–15 kJ/m²
GRN-PP-N510Halogen-free flame-retardant PPFan covers, cable ducts, cost-sensitive insulating partsV-0 @ 1.5 mm55–65 °C3–6 kJ/m²
GRN-PP-E510Flame-retardant glass-fiber-reinforced PPEnclosure structural parts, large internal partsV-0 @ 1.5 mm120–145 °C5–9 kJ/m²
GRN-ABS-F510Flame-retardant ABS (conventional flame retardant, not halogen-free)Cost-sensitive internal parts, fan coversV-0 @ 1.5 mm75–85 °C8–15 kJ/m²
GRN-PCA-W310Weather-resistant PC/ABS (non-flame-retardant)Outdoor trim, non-flame-retardant appearance partsHB @ 1.5 mm95–110 °C35–55 kJ/m²
GRN-PCA-H320Low-temperature high-impact PC/ABS (non-flame-retardant)Handles, corner guards and other parts with no flame retardancy requirementHB @ 1.5 mm95–110 °C45–65 kJ/m²
GRN-ASA-W110Weather-resistant ASA (non-flame-retardant)Outdoor cabinet trim, louversHB @ 1.5 mm85–95 °C8–15 kJ/m²
GRN-PCAS-W310Weather-resistant PC/ASA (non-flame-retardant)Outdoor trim (higher heat resistance and toughness needed)HB @ 1.5 mm95–110 °C30–50 kJ/m²
  • Typical values. Refer to the actual TDS. CTI, GWFI, GWIT and RTI data are to be verified by GREENPOLYMER; request test reports per grade.
  • Halogen-free and fluorine-free status is as shown in the test report of the grade.
  • For full properties, see Products. For how to choose, see the selection guide.

Why GREENPOLYMER

  • Custom compounding

    GREENPOLYMER does reinforcing, toughening, filling and blending. Formulations can be adjusted to the part's flammability, CTI, heat resistance, impact and appearance requirements. Materials marked "Available as a project-based development" in the table can be developed with GREENPOLYMER engineers.

  • Halogen-free flame retardancy

    GREENPOLYMER's flame-retardant technology focuses on halogen-free and fluorine-free solutions. Silicone-based flame-retardant grades do not use PTFE anti-drip agents.

  • Color matching

    The Shenzhen Color Matching Center works to RAL and Pantone numbers and customer color plaques, including the orange often used for high-voltage parts. Color matching at the compounding and pelletizing stage keeps color more stable from batch to batch.

  • Recycled grades

    Each grade can be customized with recycled content (suffix -R). The recycled share is set per project, with traceability documents. Certificate to be uploaded.

  • Fast sampling

    Free samples of 1–5 kg are available for standard grades, usually shipped in 3–7 working days. Custom formulation samples usually take 1–3 weeks.

  • Sites

    The company headquarters and main plant are in Jiangxi, which is also home to a 3D printing filament industry cluster. GREENPOLYMER also has the Hangzhou Production Base, the Shenzhen Color Matching Center and the Dongguan Development Center. 6,000+ t capacity; 29,000+ m² total plant area.

  • Patents

    8 invention patents.

  • In-house testing

    Test equipment covers melt flow rate, Izod and Charpy impact, horizontal and vertical burning (UL 94 method), heat deflection temperature and Vicat, constant temperature and humidity, UV and xenon-arc weathering, XRF, TGA, DSC, glow-wire, needle flame, comparative tracking index (CTI) and salt spray. In-house tests are for development and quality control and do not replace third-party test reports or UL certification.

  • Customers and partners

    EcoFlow, BigBlue (portable power stations, power banks); Yadea (e-bikes and two-wheelers).

3D printing in energy storage

Energy storage products change fast. 3D printing helps verify designs before tooling.

UseExampleRecommended filament
Structural prototypesCell holder layout validation, end plate assembly validation, housing prototypesGRN3D-PCA-E01 (PC/ABS); GRN3D-ABS-E01; housing samples needing a flame-retardant formulation: GRN3D-PC-X01 (flammability rating of printed parts to be verified by GREENPOLYMER)
Jigs and fixturesCell locating fixtures, module assembly fixtures, harness routing fixtures, gaugesGRN3D-PA6-C20 (PA6 with 20 % carbon fiber; carbon fiber content to be verified by GREENPOLYMER); GRN3D-PA6-G25 (PA6 glass fiber, lower cost); GRN3D-PETG-C01
Low-volume partsPrototype housings, protective covers, cable clips, replacement parts during trial production; outdoor samplesGRN3D-PETG-S01; GRN3D-PCA-E01; outdoor: GRN3D-ASA-S01
Flexible partsProtective pads, damping feet, cable jacketsGRN3D-TPU-F95; GRN3D-TPU-F85

Notes

  • The flammability of printed parts is not the same as that of injection-molded parts from pellets. Flammability results or certifications of pellets cannot be applied directly to filament or printed parts.
  • The properties of printed parts depend on print orientation, layer thickness and infill. Test functional parts as actually printed.
  • Carbon-fiber-reinforced filaments may conduct electricity and cannot be used for insulation validation of live parts.

For filament details, see the filament overview, Engineering series and Everyday Functional series. To prototype in filament and then injection-mold the same material family, see From compounding to filament. For more 3D printing applications, see the 3D printing industry page.

Industry FAQ

Q1. Should I use PC/ABS or PC for ESS cell holders?

Halogen-free FR PC/ABS works for most cell holders. It flows well and suits thin walls with many holes. Choose FR PC when the part needs higher heat resistance or higher impact strength. Confirm with flame tests at the actual wall thickness and with temperature-rise data.

Q2. If the material is UL 94 V-0, will the ESS pass UL 9540?

No, not automatically. UL 9540 and UL 9540A evaluate the system and the unit. The UL 94 rating of the material is only one input. Enclosures may also need UL 746C evaluation. Write the system requirements into your material specification early.

Q3. What CTI do busbar holders and connectors need?

The CTI target depends on the working voltage, the pollution degree and the creepage design. A high CTI class is common. Put the target value and the test method (IEC 60112) in your specification. GREENPOLYMER can recommend or develop a grade for your color and CTI target. Ask us for the test report of each grade (to be verified by GREENPOLYMER).

Q4. What is the difference between halogen-free and PTFE-free?

Halogen-free is usually judged by the limits in IEC 61249-2-21. Those limits cover only chlorine and bromine, not fluorine. PTFE is an anti-drip agent used in many FR compounds, and it contains fluorine. So a material that is halogen-free under that standard is not always fluorine-free. If you need fluorine-free, choose a grade without PTFE and ask for the test report.

Q5. Can you make flame-retardant grades with recycled content?

Yes. GREENPOLYMER can make FR grades with recycled content (suffix -R) if the performance targets are met. The recycled ratio is set per project. Traceability documents are provided. Recycled feedstock varies more between batches, so please test several batches. Certificate to be uploaded.

Related products

Customers and partners

  • EcoFlow
  • BigBlue
  • Yadea

Request a quote / sample

Please tell us:

  • Part name and drawing or photo
  • Thinnest wall and flammability target
  • Electrical requirements such as CTI and glow-wire
  • Sustainability requirements (halogen-free, fluorine-free, recycled content)
  • Target color and appearance
  • Estimated annual volume
  • TDS / SDS: Chinese and English versions are available by email.
  • For samples and MOQ, see the FAQ.

Contact us

Tell us about the part, material requirements, equipment and expected volume. We will recommend suitable grades and the validation data you need.

Send an inquiry
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