Ofeely 3.7V 130mAh battery 302030 Lithium Polymer Li-Po Rechargeable DIY Battery For Mp3 MP4 MP5 GPS Go to amazon.com Related posts Top 10 recommendation 130mah 3.7v 2022 FeatureBuilt-in protection circuit PCM for prevent over charging or over dischargingSize: 3mm (H)*20mm (W)*30mm (L)Rating: DC3.7V 130mAh DescriptionPackage include:1pcs 3.7v 130mAh 302030 Lithium battery.