Couldn't find a replacement battery for my T-mobile MDA anywhere locally. No actual T-mobile stores even had one I could try to confirm that this was even the problem. Found this and for the price, it was worth purchasing even if the issue wasn't the battery. Item arrived as described by the seller, works flawlessly. Even if this thing dies in several months, it'd still be cheaper to continue to replace it at this price than buying one battery through a T-mobile store, etc. I'm a happy camper...