3.7V 200mAh 402030 Rechargeable Li Polymer Battery

VCELL POWER 3.7V 200mAh 402030 Rechargeable Li Polymer Battery is manufactured for devices where space, weight, and reliability are critical. With a thickness of only 4.2mm and weight of approximately 5g, it supports seamless integration into ultra-compact consumer electronics.

Key advantages:

Ultra-thin prismatic structure for tight-space integration

Stable 3.7V nominal output suitable for low-voltage electronics

Low self-discharge rate for extended storage stability

Built-in PCM protection option (overcharge, over-discharge, short circuit)

OEM/ODM customization support for wire, connector, and branding

The VCELL POWER Battery is widely used in smart wearable devices, micro sensors, and precision instruments where consistent discharge performance is essential.

Core Engineering & Performance Advantages

VCELL POWER focuses on industrial-grade stability rather than theoretical performance claims. The cell structure is optimized for:

High energy density within a compact footprint

Stable discharge curve for sensitive electronics

Long cycle durability under standard operating conditions

Compatibility with mass production device integration

Cycle life performance:

700 cycles under standard conditions

Retains stable capacity for long-term OEM applications

Product Technical Specifications

Why is 402030 Li Polymer Battery ideal for compact electronics?

VCELL POWER 3.7V 200mAh 402030 Rechargeable Li Polymer Battery is engineered for high compatibility with modern micro-devices that require stable miniature energy sources.

Reasons:

Ultra-small form factor enables flexible device design

Plug-and-play integration reduces engineering adaptation cost

Stable output supports sensitive low-power IC systems

Lightweight structure improves wearable comfort

Mass production capability ensures supply stability

Mass Production Capability & Supply Stability

Unlike small assembly workshops, VCELL POWER operates factories in Guangdong, Henan, Jiangxi, and Shandong with over 1,000 skilled workers.

Supply advantages:

Stable production capacity for OEM bulk orders

Support for low MOQ trial orders

Fast sampling (7--15 days)

Mass production lead time: 25--30 days

Global logistics support via air/sea express

The VCELL POWER 3.7V 200mAh 402030 Rechargeable Li Polymer Battery is maintained under standardized production scheduling to ensure consistent supply for long-term contracts.

Application Scenarios

This battery is widely adopted in:

Smart wearable devices (fitness trackers, health monitors)

Micro IoT sensors

Medical portable instruments

Bluetooth low-power modules

Miniature consumer electronics

Its stable discharge and compact size make it suitable for plug-and-play OEM integration.

Frequently Asked Questions (FAQ)

1. What do the numbers in "402030" mean?

The numbers "402030" represent the battery's physical dimensions in millimeters (mm).

40 = Thickness (4.0mm)

20 = Width (20.0mm)

30 = Length (30.0mm)

2. How should I charge this battery?

You must use a dedicated Li-Polymer (LiPo) charger circuit or a certified Li-ion battery charger. Key parameters:

Charging voltage: 4.2V (strictly regulated)

Standard charge current: 0.2C (40mA)

Max charge current: 0.5C (100mA)

Never exceed 4.2V or charge at currents above 100mA without active temperature monitoring. Do not use a "dumb" power supply or NiMH charger, as this will cause swelling, fire, or explosion.

3. What type of connector does it use?

There is no single "standard" connector for this model. It depends on the supplier and application. Common options include:

JST 1.25mm or 2.0mm

PH series 2.0mm pitch

Molex Picoblade (1.25mm pitch)

Soldered bare leads (no connector, for direct PCB soldering)

Micro JST 1.25 (MX 1.25)

The VCELL POWER 3.7V 200mAh 402030 Rechargeable Li Polymer Battery combines compact structure, reliable cycle life, and industrial-scale supply capability, making it a strong choice for global OEM/ODM manufacturers seeking stable and cost-effective lithium polymer solutions.