This HP 851477-421 Battery fits the G4 G5 or generation 4 and 5 models.

Note: This battery is only compatible with the 4th and 5th generation of ProBook 440 and 430 models If you have the 1st or 2nd or third generation ProBook (G1 G2 G3) this is the wrong battery. You can find the ProBook 440 450 G1 battery here.

All our products carry a full 2 Year warranty and every battery is charged and tested before it ships. We provide a 30 day money back guarantee if you are not completely satisfied. We are so confident in the quality of our batteries, we will pay for any and all shipping expenses if our product fails to perform in the first 30 days you have our battery.

You can expect about 4 hours to 5+ hours of run time with this 851477-421 battery when new, depending on your energy use. The higher capacity battery cells inside this cartridge have an energy capacity of 41 Whr.

Replaces the following HP ProBook models: