Reliable Performance: No leak, high cost performance and long service life. PCM protection function: overload protection, short circuit protection, over temperature protection.
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I’ve been using this 3.7V Lipo Battery 4000mAh for a few months now, and I must say it has been quite reliable. Its high cost performance and long service life are noteworthy, making it an excellent value for the price. The battery has shown no signs of leakage, which is always a concern with rechargeable batteries.

The built-in PCM protection function is a thoughtful addition. It provides overload protection, short circuit protection, and over temperature protection, ensuring the longevity and safety of the battery. These features give me peace of mind knowing that my devices are protected.

The battery is versatile and can be used with a wide range of devices, including portable DVD players, Bluetooth devices, dash cams, and many more. It’s particularly useful for wearable electronic devices, PDA and digital cameras, GPS, monitoring units, notebook computers, e-books, telematics, tracking devices, sleep management equipment, and blood oxygen tracking equipment, among others.

One thing to keep in mind is that it’s recommended to store the battery at 40-60% charge during long storage. They suggest charging the battery every three months after receipt to maintain its voltage between 3.7-4.0V. It’s also important to store the battery in a cool, dry place.

Should you have any questions or concerns about the product, feel free to contact them via Amazon message. They promise to respond within 24 hours, which is quite commendable customer service.

  • Voltage: 3.7V; Typical capacity: 4000mAh, Min capacity: 3800mAh; Material: Lithium Polymer; Connector Type: 2P PH2.0mm Pitch; Size: 90*60*6mm (WxLxH)
  • Reliable Performance: No leak, high cost performance and long service life. PCM protection function: overload protection, short circuit protection, over temperature protection.
  • Application: Suitable for portable DVD players, bluetooth devices wireless devices, dash cam, bark collar for dog, keyboard and mouse, wearable electronic devices, PDA and digital cameras, GPS, monitoring units, notebook computers, e-books, telematics, tracking devices, sleep management equipment, blood oxygen tracking equipment, pulse monitors, Wi-Fi enabled smart home systems.
  • Storage: Keep the battery at 40-60% charge during long storage. We recommend charging the battery every 3 months after receipt, keeping the voltage at 3.7-4.0V, and storing it in a cool, dry place.
  • Guarantee: Please contact us if you have any questions or concerns with the product via Amazon message. We will respond to you within 24 hours.

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