Right my friend was just playing on his DS using his original R4 card, he shut off the DS to change game and upon powering on the console nothing happened. When put on charge the power light lights for 2 secs and then disappears, I then took out the battery from my spare (working)ds and swapped them. The battery from the ds (not working) was working in the spare ds. I returned the batterys to the original ds's the spare powered on fine and the broken ds still was not working the spare ds was switched off and the r4 cards was swapped to see if that was the problem with that neither ds are working now can any help