I bought an A4Tech wireless keyboard / mouse few months back. The RF is also a charger but it stopped charging a while back. I didn't get it repaired but bought a normal chinese battery charger for 300rs. After a few weeks of 24 hours usage, that charger has also stopped working. :/
Is 24 hour charging to be blamed?
P.S. the batteries are 1400mah 1.2v AA x 2.