Amazon.com: Liter 3.7V 300mAh 802025 Lipo Battery Rechargeable Lithium Polymer ion Battery Pack with JST PH 2.0mm Connector : Electronics
3.7V 300mAh battery 303040 Lithium Polymer Li-Po Rechargeable Battery For DIY Mp3 MP4 MP5 GPS PSP bluetooth electronic part - AliExpress
100pcs 3.7v,300mah,402035 Polymer Lithium Ion / Li-ion Battery For Gps,mp3,mp4,mp5,dvd,bluetooth,model Toy Mobile Bluetooth - Digital Batteries - AliExpress
1 DB - 602030 3,7 V 300 mAh lítium polimer újratölthető akkumulátor MP4 Bluetooth hangszóróhoz Tachográf