3.7V 250mAh LiPo 1S Polymer Rechargeable 3 Wire Battery: MP3 GPS Speaker - 502030
Built-in protection circuit (PCM) prevents over charging/discharging.
Actual measured dimensions (mm): D4.8 x W20.2 x L32.4
Incorporated third temperature sensor wire.
Polarity: Red (+) / Black (-) / White (T)
Shipped fast and secure from the UK (global shipping available).
If you have any questions at all, or if you don't see the battery you require, please ask.