Sharp MD battery M11, M20, M25MD Walkman lithium battery(Associated with Jiantianlong) Sharp MD batteries, general M11, M20, M25, are also commonly used in Kenwood A7R, E7R and Denon R10, R30. The quantity is not much, the original batteries, use Kenwood E7R to test and use them for about two hours, the original batteries are 1200 mA and 1350 mA, and they are shipped randomly. I can also help to replace the battery with a 2,000 mAh battery. The price of this battery is high, so please do not disturb the bargaining price. Thank you!!! I also take the battery replacement business, welcome to inquire.