Features: - High-grade Lithium-ion battery - Best quality in the market - 100% compatibility with specified laptop brand - 100% original capacity output Specifications: - Capacity: 4400mAh - Chemistry: Li-ion - Voltage: 11.1V - Cell: 6 cells Compatible Models: - ProBook 4330s - ProBook 4331s - ProBook 4430s - ProBook 4431s - ProBook 4435s - ProBook 4436s - ProBook 4530s - ProBook 4535s Compatible Part Number: - HSTNN-OB2R HSTNN-DB2R HSTNN-OB2T HSTNN-IB2R HSTNN-LB2R HSTNN-I99C- 4 - HSTNN-I99C-3 HSTNN-I98C-5 HSTNN-I97C-4 HSTNN-I97C-3 HSTNN-I02C HSTNN Q89C HSTNN-Q88C-5 HSTNN-Q88C-4 HSTNN-Q87C-5 HSTNN-Q87C-4 633805-001 633733-321 633733-151 633733-1A1 Please check your battery's Compatible Model & battery picture carefully to ensure compatibility with your Laptop before purchasing this battery. What's in the box 1x Laptop Replacement Battery 1x User Manual