GreenTechLLC BTY-M48 laptop battery 15.2V 50WHR 4-cell 3390mAh black

Compatible replacement for MSI Prestige

The GreenTech BTY-M48 is a new 4-cell lithium-ion battery built to fit MSI Prestige PS42 and Modern PS42 models, plus the Mechrevo S1-C1. It replaces the original BTY-M48 pack and is tested for correct voltage, circuit protection and stable current. CE, FCC and RoHS certifications cover the safety baseline. This unit suits owners of those specific MSI notebooks who need a direct swap.

50 Wh capacity with 3390 mAh at 15.2 V

The pack stores 50 Wh at a nominal 15.2 V, delivering 3390 mAh from its four lithium-ion cells. That energy level matches the OEM rating, so typical office workloads and light media consumption run for the same span as the factory battery. Runtime will shrink under sustained heavy loads such as video rendering or gaming, and the cell chemistry will degrade gradually over repeated charge cycles.

Black 4-cell pack tested for low self-discharge

The black housing matches the original colour and slides into the internal battery bay without adapters or cable changes. Each unit is checked for low self-discharge before shipping, so it holds charge during shelf storage. Buyers needing a higher-watt-hour pack, a different voltage or a form factor for other MSI series will not be served by this model.