Laptop Battery PATONA for HP EliteBook 850, 4500mAh, Li-Pol, 11.1V, CM03XL, Premium:Have you been experiencing battery capacity loss? This laptop battery PATONA for HP EliteBook 850, 4500mAh, Li-Pol, 11.1V, CM03XL, Premium is a power supply replacement for selected models of HP laptops. A laptop without enough power or a power failure will not disconcern you anymore. A backup laptop battery is suitable as a second battery when you are on holiday and you cant access an electrical outlet, but still need to keep your laptop running. PATONA for HP EliteBook 850, 4500mAh, Li-Pol, 11.1V, CM03XL, Premium Battery Key Features Alternative Li-pol battery Safe substitute for the original battery Capacity: 4500mAh, voltage: 11,1V Suitable for HP laptops, more specifically the EliteBook models Supplies your laptop with power when you are on the go Keeps your laptop running and increases your productivity Tip: Frequent use affects battery life . Follow the instructions on correct handling and charging that can be found in the manual to slow down capacity loss.