We manufactures and develops high quality lipo batteries used for mp3, mp4, bluetooth, other portable products. Our lipo batteries are of low internal impedance, very stable, superior safe characteristics, high energy density, light weight, long cycling life, flexible, environmentally friendly. Shida Lipo batteries are your ideal power solution! Pls contact us for more details. Tailored made lipo batteries are welcome too! ODM and OEM are warmly welcomed.