Get up to 4 hours of battery life with an extended life HP EliteBook laptop battery. This battery replaces the original battery in HP EliteBook 8440p, 8440w, 6440b, 6445b, 6450b, 6455b, 6540b, 6545b, 6550b, and 6555b laptop models. More compatible laptop models and battery part numbers are listed below.

Note: Because of the additional cells in this extended life battery, it will protrude to the rear of the laptop about 1 inch.

We use the highest quality lithium-ion battery cells and components that last nearly six times longer than cheaper, lower quality batteries.

Each battery is individually tested before shipment and backed by a 30 day complete satisfaction guarantee and a 2 Year warranty.

You can expect about 3 hours to 4 hours of run time with this computer battery when new, depending on your energy use. The higher capacity battery cells inside this cartridge have an energy capacity of 7800 mAh. This battery will be compatible with batteries rated at 4400,4800 & 5200 mAh capacities while providing up to 50% more run time.

This battery replaces the HP 6530B 6535B 6730B 6735B 8440p 8440w 6440b 6445b 6450b 6455b 6540b 6545b 6550b 6555b ELITEBOOK series laptop batteries and additional machines which are listed at the extreme bottom of this web page. Also replaces the ,HP COMPAQ 6530b, HP COMPAQ 6535b, HP COMPAQ 6730b, HP COMPAQ 6735b laptop batteries.

Laptop Battery Express only deals with brand new premium computer batteries. We never carry recycled or used batteries. We only use the highest quality cells inside the battery pack so you will have a long service life (300-500 recharge cycles). We do not use cheaper battery cells which can wear out in a little as 6 months. Our inventory turns rapidly and you will always receive a freshly manufactured battery.