Batt for msi ps42 ps42 8rb ps42 8250uBTI Battery for Notebook 50Wh, 15. 2V, 3290mAh Replacement The BTI Battery for Notebook is a purpose built, rechargeable power solution designed to keep your portable workstation running when you need it most. This battery uses a proprietary size crafted for a snug, secure fit that enhances reliability and performance in select notebook models. With a capacity of 3290 mAh and a total energy rating of 50 Wh at 15. 2 V, it delivers sustained power