JST PH 1.0mm 3 pin 3.7V,300mAH 402035 Polymer lithium ion / Li ion battery for tablet pc BANK,GPS,mp3,mp4|Digital Batteries| - AliExpress
3.7V 300mAh 601235 Rechargeable Lithium Polymer Li Po ion batteries For DIY Mp3 GPS PSP bluetooth Headphone Headset BC31 v5.0|rechargeable battery|battery forbattery rechargeable - AliExpress
3.7V 300mAh 602030 Li Polymer Li-Po Akku 1.25 Stecker Akku für mp4 | eBay