Batt msi modern 15 a10m a10rb a11m a4mThe BTI Battery for Notebook is a premium, rechargeable power solution engineered to keep portable computing devices running longer between charges. Designed with a proprietary battery size, this replacement battery delivers a compact, lighter alternative to standard notebook cells without compromising performance. With a substantial 4600 mAh capacity and 52. 40 Wh of energy at 11. 4 V, it provides dependable, sustained power for everyday tasks,