Total Micro - Notebook battery - lithium ion - 9-cell - 8400 mAh - for HP EliteBook 8440p, 8440w; ProBook 6440b, 6445b, 6450b, 6455b, 6540b, 6545b, 6550b, 6555b

Smaller and lighter than other rechargeable batteries, proving ideal for portable devices Provides reliable power to your notebook with a capacity of 8400 mAh Rechargeable battery - Lasts longer on a single charge than its disposable counterparts