Replacement Laptop Notebook Battery for HP EliteBook 8440P 8440W ProBook 6450B 6455B 6540B 6545B 6550B 6555B 6930p 8440p 8440w 4 Condition: Brand New - Grade A cells Battery Type: Li-ion Voltage: 10.8 Volt (11.1 Volt compatible) Capacity: 5200mAh (Better than 4400mAh) 90 Day Money Back. Buy with confidence!