Ofeely 3.7V 60mAh 381220 Lithium Polymer Li-Po Rechargeable Battery For DIY Mp3 MP4 MP5 GPS Go to amazon.com Related posts Top 10 best 3.7v 60mah FeatureBuilt-in protection circuit PCM for prevent over charging or over dischargingSize: 3.8mm(H)*12mm(W)*20mm(L)Rating: DC3.7V 60mAh DescriptionPackage include:1pcs 3.7v 60mAh lithium battery