Shenzhen Resky Electronics Co., Ltd.
| Payment Terms | Western Union,T/T |
| Supply Ability | 30000pcs/day |
| Delivery Time | 7-10days |
| Packaging Details | Paper box |
| Working voltage | 3.7V |
| Discharge Rate | Low Discharge Rate |
| Electrolyte | Li(Nicomn)O2 |
| Nominal Capacity | 4000mAh |
| Weight | 43G |
| Cycle Life | 500cycles |
| Warranty | 12months |
| Shipping | UPS, DHL, FedEx, TNT, by Air, by Sea, Special Line |
| Specification | 10*55*56mm |
| HS Code | 8507600090 |
| Brand Name | RESKY |
| Model Number | LP105556 |
| Certification | CE, RoHS, MSDS, Un38.3 |
| Place of Origin | China |
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Product Specification
| Payment Terms | Western Union,T/T | Supply Ability | 30000pcs/day |
| Delivery Time | 7-10days | Packaging Details | Paper box |
| Working voltage | 3.7V | Discharge Rate | Low Discharge Rate |
| Electrolyte | Li(Nicomn)O2 | Nominal Capacity | 4000mAh |
| Weight | 43G | Cycle Life | 500cycles |
| Warranty | 12months | Shipping | UPS, DHL, FedEx, TNT, by Air, by Sea, Special Line |
| Specification | 10*55*56mm | HS Code | 8507600090 |
| Brand Name | RESKY | Model Number | LP105556 |
| Certification | CE, RoHS, MSDS, Un38.3 | Place of Origin | China |
Lithium Ion Cell 105556 3.7v 4000mAh 14.8wh Rechargeable Lithium Ion Polymer Battery
| NO. | Items | Specifications |
| 1 | batteries | 3.7V 4000mah lipo battery |
| 2 | Charge voltage | 4.2V |
| 3 | Nominal voltage | 3.7V |
| 4 | Nominal capacity | 4000mAh 0.2C Discharge |
| 5 | Charge current | Standard Charging:0.2C Rapid charge: 1.0C |
| 6 | Standard Charging method | 0.5C CC(constant current)charge to 4.2V, then CV(constant voltage 4.2V)charge till charge current decline to ≤0.05C |
| 7 | Charging time | Standard Charging:2.75hours(Ref.) Rapid charge: 2hours(Ref.) |
| 8 | Max.charge current | 0.5C |
| 9 | Max.discharge current | 1.0C |
| 10 | Discharge cut-off voltage | 2.5V0.25V(0.2C) |
| 11 | Operating temperature | Charging: 0 °C ~45 °C Discharging:0 °C ~45 °C |
| 12 | Storage temperature | -10°C~ +45 °C |
| 13 | Dimension | Length:56±0.5mm (not including tabs) Width:55±0.5mm Thickness:10±0.2mm |
| 14 | Drop Test | The cell is to be dropped from a height of meter twice onto concrete ground. No fire, no leakage |
| 15 | cycle time | ≥800times |
The differences for lithium polymer battery, li-ion battery, lifepo4 battery:
Safety:
Li-Po:
Safer than liquid Li-ion due to solid/polymer electrolyte (reduced risk of leakage).
Vulnerable to swelling if overcharged; requires protective circuits.
Cylindrical Li-ion:
Liquid electrolyte poses a higher risk of thermal runaway or explosion under abuse (e.g., overheating, short circuits).
Metal casing provides mechanical protection but traps heat.
LiFePO₄:
Best thermal stability (high decomposition temperature, ~510°C vs. ~200°C for NMC).
Lowest risk of fire/explosion; no cobalt/nickel toxicity.
Cycle Life
Li-Po: 300–500 cycles (depends on depth of discharge; shorter with frequent full discharges).
Cylindrical Li-ion: 500–1,000 cycles (longer with NCA/NMC chemistries in EVs).
LiFePO₄: 2,000–5,000+ cycles (longest lifespan, ideal for frequent charging/discharging).
Temperature Performance:
Li-Po: Operates well in moderate temperatures (0–60°C); sensitive to extreme cold/heat.
Cylindrical Li-ion: Similar to Li-Po but slightly better high-temperature tolerance in metal casings.
LiFePO₄: Performs best in wide temperature ranges (−20°C to 60°C), with minimal capacity loss in cold climates.
Weight & Design:
Li-Po: Lightest and most flexible; used in devices requiring custom shapes (wearables, thin gadgets).
Cylindrical Li-ion: Rigid and heavier per capacity; standardized sizes (18650) enable easy integration into large packs (e.g., laptops, EVs).
LiFePO₄: Slightly heavier than Li-Po but lighter than some cylindrical Li-ion in pouch form; less design flexibility than Li-Po.
Cost:
Li-Po: Moderate to high (due to cobalt/nickel content and custom manufacturing).
Cylindrical Li-ion: High for premium cells (e.g., NCA) but cost-effective at scale (common in EVs).
LiFePO₄: Lowest cost (cobalt/nickel-free materials, simpler manufacturing; ideal for large-scale energy storage).
Typical Applications:
Li-Po:
Portable electronics (smartphones, tablets, wearables), drones, RC toys, and thin devices needing flexible power.
Cylindrical Li-ion:
Electric vehicles (Tesla’s 21700 cells), laptops, power tools, and large energy storage systems (due to standardized sizes and high energy density).
LiFePO₄:
Electric buses, e-bikes, solar/wind energy storage, backup power, and applications prioritizing safety and long life (e.g., marine, grid storage).
Pictures:
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler
Year Established:
2012
Total Annual:
500000-1000000
Employee Number:
20~50
Ecer Certification：
Verified Supplier
Shenzhen Resky Electronics Co., Ltd is a company specialized in manufacturing, sales and marketing of rechargeable lithium battery and related battery packs.Our lithium battery cells and packs products are widely used in portable mobile devices such as Bluetooth headsets, MP3 players, PDAs, Digital ... Shenzhen Resky Electronics Co., Ltd is a company specialized in manufacturing, sales and marketing of rechargeable lithium battery and related battery packs.Our lithium battery cells and packs products are widely used in portable mobile devices such as Bluetooth headsets, MP3 players, PDAs, Digital ...
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