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Smallest Li Polymer Battery Pack 3.7V 155Mah Li Polymer Battery With Wires

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Whatsapp:0086 18588475571
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xApplication | Toys, Power Tools, Home Appliances, Consumer Electronics, BOATS, Golf Carts, SUBMARINES, Electric Bicycles/Scooters, Electric Folklifts, Electric Wheelchairs, Electric Power Systems, Solar Energy Storage Systems, Uninterruptible Power Supplies, Electric Fo | Weight | 9g |
---|---|---|---|
Type | Li-Ion | Size | About 4.3*20.5*26(mm) |
Max Charge Voltage | 4.2V | Discharge Cut Off Voltage | 2.75V |
Standard Charge Current | 0.2C | Max Charge Current | 1C |
Charging Mode | CC/CV | Charging Temperature | 0~45℃ |
Discharging Temperature | -20 ~ 60℃ | Applied Field | Electrical Appliances |
Warranty | 3months-1year | Anode Material | LCO |
Chargeable | Yes | Storage Type | Indoor Preservation |
The Charging Ratio | 0.5C | The Discharge Rate | 1C |
Port | Shenzhen/Hongkong | ||
Highlight | Smallest Li Polymer Battery Pack,155Mah replacement li ion battery,Smallest Li Polymer Battery Pack |
Application | Toys, Power Tools, Home Appliances, Consumer Electronics, Electric Vehicles, Energy Storage Systems |
Weight | 9g |
Type | Li-Ion |
Size | 4.3 × 20.5 × 26mm |
Max charge voltage | 4.2V |
Discharge cut off voltage | 2.75V |
Standard charge current | 0.2C |
Max charge current | 1C |
Charging mode | CC/CV |
Charging Temperature | 0~45℃ |
Discharging Temperature | -20 ~ 60℃ |
Warranty | 3 months - 1 year |

Nominal capacity | 155mAh | Discharging Temperature | -20 ~ 60℃ |
Nominal voltage | 3.7V | Storage temperature | ≤1 month: 45~60℃ ≤3 months: 25~45℃ ≤12 months: -20~25℃ |
Max charge voltage | 4.2V | Humidity Range | 0~85% (non-condensing) |
Discharge cut off voltage | 2.75V | Dimension | 4.3 × 20.5 × 26mm |
Cycle life | 300 cycles (≥80%) | Brand | BAKTH / Neutral / OEM |

- Custom battery voltage, capacity size and case
- Custom connect plugs, sockets, cables, and waterproofing
- Special battery packs for any applications
- Custom BMS with specific charging/discharging current, balance function, and communication protocol
- High energy density with potential for higher capacities
- No prolonged priming needed - ready to use after first charge
- Low self-discharge (less than half of nickel-based batteries)
- Low maintenance - no periodic discharge needed, no memory effect
- Specialty cells available for high-current applications
Our batteries have passed rigorous safety tests including drop shock, impact, squeeze, soak, bonfire, over-charge, and over-discharge tests. They feature stable chemical structure with no leakage, venting, disassembly, rupture or fire.




- 20 years of battery pack design and production experience
- Factory direct sales with high-quality packaging and PCB/BMS
- ISO 9001 and ISO 14001 certified quality standards
- OEM & ODM services recognized by Fortune 500 companies
- Excellent technical and after-sales service
Using qualified battery cells with full-function PCB/BMS and strict QC procedures are essential for safe battery operation - these are our fundamental requirements in battery design and production.
Customized batteries, 18650/21700/26650/32700 cells, LiFePO4 3.2V-100Ah/150Ah/200Ah/277Ah, 12.8V100Ah/120Ah/12Ah/6Ah packs.
Standard warranty is 12 months (negotiable for special products). We always provide pre-production samples and conduct final inspection before shipment.
No minimum quantity - we welcome sample orders to test quality before bulk purchases. Larger quantities receive better pricing.
Yes, our professional R&D team can provide customized solutions according to your requirements.