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3.7V 440mAh Lithium Polymer Battery with 500 Cycles and 1.5A Discharge

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Shenzhen Jianheng Technology Co., Ltd.

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3.7V 440mAh Lithium Polymer Battery with 500 Cycles and 1.5A Discharge

Brand Name : OiD

Model Number : OiD452539-440

Certification : Complies with GB/T 18287-2013, IEC/EN61960, and UL1642 safety standards.

Place of Origin : China

MOQ : 100pcs

Price : $0.5 ~ $100.0 / pcs

Delivery Time : 3 ~ 7 days for storage

Payment Terms : TT,L/C,Western Union

Name : Lithium Ion Battery

Battery Type : 3.7V, 440mAh Rechargeable

ODM : Free custom design for packs

High Energy Density : 250-300Wh/kg

Superior Cold Weather Performance : Reliable in Extreme Cold (-20°C to 60°C)

Cycle Life : 500+ cycles

Charging/ Discharging : 1C/ 1.5C

Flexible Form Factor : Thin, Customizable Pouch Design Lithium Ion Battery

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Product Name

OiD452539-440 Lithium Polymer Battery

Advantages

High Energy Density & Lightweight: Ideal for compact devices requiring long runtime.
Extended Cycle Life: Stable capacity retention even after repeated use.
Built-in Safety: Multi-protection circuits against overcharge, over-discharge, and short circuits.

Specifications

Parameter	Value
Nominal Voltage	3.7V
Minimum Capacity	420mAh (0.2C discharge)
Typical Capacity	440mAh (0.2C discharge)
Charging Voltage	4.2V (±50mV)
Discharge Cut-off Voltage	3.0V
Standard Charge Current	0.2C (88mA)
Max Charge Current	1.0C (440mA)
Standard Discharge Current	0.2C (88mA)
Max Discharge Current	1.5C (660mA)
Weight	Approx. 9.0g
Internal Impedance	≤200mΩ (AC 1kHz)

Cycle Life

Test Condition	Performance
0.2C Charge/Discharge Cycles	500 cycles
Capacity Retention	≥80% of initial capacity

Discharge Curve

Operating Temperature Range

Condition	Temperature Range
Charging	0°C to 45°C
Discharging	-20°C to 60°C
Long-term Storage (50% SOC)	-10°C to 25°C (12 months, ≥85%)
	-10°C to 45°C (6 months, ≥85%)
	-10°C to 55°C (1 month, ≥90%)

Certifications

Complies with GB/T 18287-2013, IEC/EN61960, and UL1642 safety standards.

Key Features

High Discharge Capability: Supports 1.5C continuous discharge for power-demanding applications.
Low Self-Discharge: <3% per month at 25°C.
Wide Temperature Tolerance: Operates reliably in extreme environments (-20°C to 60°C).

Applications

Wearable Electronics: Fitness bands, smartwatches, hearing aids.
IoT & Smart Devices: Sensors, RFID tags, GPS trackers.
Medical Devices: Portable monitors, diagnostic tools, wearable health devices.
Consumer Electronics: Wireless earbuds, mini drones, handheld gaming devices.

3.7V 440mAh Lithium Polymer Battery with 500 Cycles and 1.5A Discharge

Usage Warnings & Precautions

Do NOT puncture, crush, or immerse in liquid.
Avoid charging outside 0°C–45°C to prevent damage.
Use certified chargers matching 4.2V CC/CV protocol.
Immediately discontinue use if battery leaks, swells, or exceeds 60°C during operation.

Storage Guidelines

Short-term (≤3 months): Store at 20±5°C, 50% SOC.
Long-term (>3 months): Recharge to 50% SOC every 6 months.
Environment: Dry, non-condensing area away from flammable materials.

Warranty & Disclaimer

Warranty: 12 months from shipment date, covering manufacturing defects.
Exclusions: Physical damage, misuse, or unauthorized modifications void warranty.
Disclaimer: Proper handling is critical. Users assume full risk for non-compliant applications.

Product Tags:

3.7v 2a lithium battery

3.7v lithium ion battery

1.5a 2a lithium battery

3.7V 440mAh Lithium Polymer Battery with 500 Cycles and 1.5A Discharge Images

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