This is a new MSI BTY-M6K thin Battery for the MSI GF63 series gaming models. This MSI GF 63 battery is rated 11.4 volts and 4500 mAh and will normally last 3.5 hours on a full charge. You can get longer battery life by dimming your screen and closing unused programs and applications.

This BTY-M6K battery features lithium-ion cells. Li-ion battery technology provides longer run times with less weight. In addition, Li-ion batteries are not subject to the memory effect common with older battery technology. This MSI BTY-M6K battery replacement is 100% compatible with the original battery specifications and is individually tested and backed by a 2 Year warranty.

You can expect about 2 hours to 3-1/2 hours of run time with this MSI GF63 battery when new, depending on your energy use.