11.1V, 5200mAh, Li-ion Battery fits Mindray, Umec10, 57.72WhBattery Fits Models: Umec10 Battery Part Numbers: Li23s005a Canadian Batteries have supplied the replacement batteries from Cameron Sino for nearly a decade. We have had zero instances of a product being damaged while using one of our batteries in that time. Batterybuyer is a genuine Canadian supplier. We operate many inventory systems, and all products over nine months old are disposed of and replaced with fresh new stock. We endeavor to keep our