The YDL 401515 is a 75mAh 3.7V rechargeable lithium polymer (LiPo) battery measuring 4 x 15 x 17 mm including the protection board and weighing about 2 g. It arrives with a built-in PCM protection circuit, 50 mm 28 AWG lead wires and a JST PH2.0 (PHR-2) 2-pin connector already fitted, so it can drop straight into your device. It uses a standard grade cell tuned for everyday consumer electronics.
Typical applications
TWS earbuds, smart rings & micro wearables:
- TWS earbuds
- Smart ring
- Hearing aid
- Stylus pen
- Wireless sensor
Custom options
The lead length and connector type can be changed to match your build. The capacity is fixed by the cell size, so if you need a different capacity tell us the space you have available and we will point you to the right model.
Safety notes
The red lead is positive (+) and the black lead is negative (-). Do not reverse the polarity, charge above 4.2 V, puncture the cell or expose it to open flame. Always charge with a constant-current / constant-voltage LiPo charger.