The YDL 551040 is a 200mAh 3.7V rechargeable lithium
polymer (LiPo) battery measuring 5.5 x 10 x 42 mm
including the protection board and weighing about 4.6 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
Smart watches, fitness bands & Bluetooth wearables:
- Smartwatch
- Fitness tracker
- Bluetooth headset
- Smart glasses
- Key finder
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.