TWB Premium Grade Generic Laptop Battery For HP Probook 4710s, 4510s TWB Batteries are the perfect choice that you can make for your computer. Very affordable, The best quality batteries on the market. Long Life durable Battery for your Laptop Description Battery Type : Li-ion Voltage : 10.8V Capacity : 4400mAh Color: Black Product Type: Battery Specifications: Attention: 1.Li-Ion Laptop Battery 10.8V and 11.1V are in common use. 2.Li-Ion Laptop Battery 14.4V and 14.8V are in common use. Replace Part Numbers: HP 513129-121 513129-141 513129-161 513129-321 513129-351 513129-361 513129-421 536418-001 572032-001 HSTNN-I60C-5 HSTNN-I61C-5 HSTNN-I62C-7 HSTNN-IB88 HSTNN-IB89 HSTNN-OB88 HSTNN-OB89 HSTNN-XB88 NBP6A156 NBP6A156B1 NBP8A157B1 Fit Laptop Models: HP Compaq ProBook 4510s ProBook 4510s/CT ProBook 4515s ProBook 4515s/CT ProBook 4710s ProBook 4710s/CT What's in the box 1 X Laptop Battery