【Size & Battery Specs】103665 lithium polymer rechargeable battery pack, DC 3.7V / 3000mAh (11.1Wh). Max charge voltage: 4.25V. Battery size: 10 × 35 × 68mm (0.39" × 1.38" × 2.67") (T×W×L), net weight approx. 50g, with 5cm / 2" wire lead—designed for stable output and longer runtime in portable electronics, wireless devices, and DIY power projects.
【Micro JST 1.25mm 2-Pin Connector】Built with a Micro JST 1.25mm 2-pin plug for quick installation and a secure connection. Great for devices that use a 1.25mm battery port. Please confirm connector type, plug shape, and polarity before ordering.
【Must Confirm Before Purchase】Not universal. Please verify before purchase: (1) battery size and thickness, (2) connector type: Micro JST 1.25mm 2-pin, (3) plug direction/shape, (4) wire polarity (+/−). Wrong connector or reversed polarity may cause your device not to power on or may damage the circuit.
【Built-in PCM Safety Circuit】Built-in PCM protection provides over-charge, over-discharge, over-current, and short-circuit protection. Helps improve charging safety, supports stable charging cycles, and extends the service life of both the battery and your device.
【Wide Applications for DIY & Wireless Devices】Suitable for 3.7V rechargeable devices such as Bluetooth speakers, GPS trackers, monitoring modules, smart home systems, portable electronics, and DIY projects like ESP32 / Arduino / NodeMCU power supply applications requiring longer runtime.
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