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3.7V 4000mAh Li-Polymer Rechargeable Battery - High Safety, Customizable - China Suppliers & Factory Direct
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4000mAh
Nominal Capacity
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3.7V
Nominal Voltage
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500+
Cycle Life
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Li-Polymer
Battery Type
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100g
Rough Weight
| Nominal Voltage | 3.7V | Nominal Capacity | 4000mAh |
| Size | 6.2*50.5*58.5mm | Rough Weight | 100g |
| Battery Type | Li-polymer | Cycle Life | 500 times |
| Standard Charge | 0.2C | Max Charge | 1.0C |
| Standard Discharge | 0.2C | Max Discharge | 1.0C |
| Charge Temperature | 0–45℃ | Discharge Temperature | -10 ~ +60℃ |
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Product Introduction
The 605056 3.7V 4000mAh rechargeable Lithium Polymer battery delivers high-capacity power in a slim, lightweight form. Utilizing advanced gel polymer electrolyte and flexible aluminum-plastic packaging, it ensures absolute safety with no leakage, fire or explosion risk. This 4000mAh cell offers stable discharge voltage, low self-discharge and 500+ charge cycles. Its high energy density and customizable dimensions make it ideal for devices demanding extended runtime without added bulk, providing consistent, reliable performance for power-hungry portable electronics.
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Frequently Asked Questions
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What is the nominal voltage and capacity of the 605056 battery?
The 605056 battery has a nominal voltage of 3.7V and a nominal capacity of 4000mAh, making it suitable for a wide range of portable electronic devices that require long-lasting power.
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Is the 605056 3.7V 4000mAh battery safe to use?
Yes. The battery uses advanced gel polymer electrolyte and flexible aluminum-plastic packaging, which eliminates the risk of leakage, fire, or explosion under normal operating conditions, ensuring a high level of safety.
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What are the recommended charge and discharge rates for this battery?
The standard charge and discharge rate is 0.2C for optimal longevity. The maximum charge and discharge rate is 1.0C. It is recommended to stay within these limits to preserve battery health and cycle life.
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What is the operating temperature range for charging and discharging?
The battery can be charged within a temperature range of 0℃ to 45℃. For discharging, the operating range is -10℃ to +60℃, providing flexibility for use in various environmental conditions.
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How many charge cycles can the 605056 battery handle?
The 605056 Li-polymer battery is rated for 500+ charge cycles, offering a long service life and reliable performance over extended use, making it a cost-effective choice for portable electronics.
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Can the dimensions of this battery be customized?
Yes. The standard size is 6.2×50.5×58.5mm with a weight of approximately 100g. However, its high energy density and flexible form factor allow for customizable dimensions to meet specific device design requirements.







