jctoad is right about the lithium charging process..i was talking aboput lower end batteries..and the circuit is good..actually it is using a FET as a regulator/protection.
well one more thing,,the charger i have has a red and green LED..well the red one simply says the charger is plugged and the green LED is well lit when the player is almost drained and dimmer if almost charged..well my charger is different from you and my charger doesnt go too warm but charges fine..guess what it was china made..he3
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