My first thought is that it is the batteries. they might be the cheap kind. I prefer Energizer batteries. They word the best. You know the batteries that have the pink bunny on them, or get yourself some rechargeable batteries.
You should be able to find a portable DVD player that uses rechargeable batteries. You should not try to recharge regular batteries. Their not designed to be recharged and the chemistry doesn't support it. You will waste your money and cause a possib...
Rimmer is closest to right. The size of the battery is determined by how much energy needs to be stored in it. More energy means a bigger battery. AAA, AA, C, and D batteries are all 1.5 volts (yes, there was a B battery but it is rare these days) bu...