CM03 CM03XL Laptop Battery - for HP EliteBook 840 845 850 855 740 745 750 755 G1 G2 Series Notebook fits CO06 CO06XL Battery Spare 716724-421 717376-001 CM03050XL [11.1V 50Wh]

tight fit that's tricky to install but that's the laptop design rather than this battery.it works. what more can i say?

but this thing is emphatically NOT what they say it is. in fact, they have gone to some lengths to alter it - but then to disguise the alterations.We are looking for a full refund, will not settle for anything less as a matter of principle and expect Amazon to be energetically taking this up on our behalf. watch this space ...

HP Laptop battery CMO£. Received promptly, but was totally dead on arrival. Would not charge at all.Posting defective lithium batteries forbidden by Royal Mail, Hermes and other couriers, so unable to return it..Amazon refunded and told me to dispose of it locally.

15 months of use and its faild, the unit has swollen so badly it has popped the Laptop case apart.