Battery for Lenovo ThinkPad T420s ,T420si, T430s 66+ (42T4844)

Tech Specs Generic 11.1V 4400mAh, 66+ Note: this battery is not replaceable and compatible with 81+ series batteries, it is only replaceable with 66+ series batteries, please make sure you choose correct battery before you place your order. Original Part Number 0A36287, 0A36309, 42T4844, 42T4845, 42T4846, 42T4847, 45N1036, 45N1037, 45N1038 45N1039, 45N1064, 45N1065, 45N1066, 45N1067, 45N1143 Compatible Models T420S, T430S, ThinkPad T420s, ThinkPad T420s Series, ThinkPad T420si Series, ThinkPad T430S, Thinkpad T430s 2352-CTO S, ThinkPad T430s Series, ThinkPad T430si Series.