High Performance 10400mAh 7.4V 8 cells Laptop Battery for HP Pavilion tx1000 Series, Pavilion tx1107AU, Pavilion tx1213au, Pavilion tx1400 Series, Pavilion tx2000 Series, Pavilion tx2500 Series, Pavilion tx2100 Series HSTNN-OB41, HSTNN-OB37, 437403-321, 431325-321, 441131-001 High Performance 10400mAh 7.4V 8 cells Laptop Battery for HP Pavilion tx1000 Series, Pavilion tx1107AU, Pavilion tx1213au, Pavilion tx1400 Series, Pavilion tx2000 Series, Pavilion tx2500 Series, Pavilion tx2100 Series. Pls study the product desription below to make sure your original battery and laptop meet the compatibility of both the part # and models. We are direct from manufacturer and all batteries are made of A grade cells. Shipping from OHIO, USA, 2 to 5 days delivery guarantee. High capacity battery certified by CE and RoHS. 100% OEM compatible! Warranty: 30-day money back & 1-year guarantee!