Free shipping! 3.7V 4000mAh 3668100 Polymer Lithium Li-Po Rechargeable Battery For DIY Mp3 MP4 MP5 GPS PSP e-book

Tracking number provide!One year warrantyFeatures:1> 100% brand new2> High quality and high capacity!3> It can last work more than 15 hours!Built-in protection circuit PCM for prevent over charging or over discharging5> Size: 3.6mm(H)*68mm(W)*100mm(L)6> Rating: DC3.7V 4000mAhPackage include:1pcs x 3.7v 4000mAh lithium battery