The old, cheap portable dvd player will not charge any more. The label says 7.4v 3500 mAh on the battery cover. Corded power is 12v dc.
It looks like I can't use my 1.2v rechargeables in serial or parellel, since I get either more volts or more amps per hour, but not both.
Another way would be to buy battery cells with more mAh (original 3500 mAh barely covered one movie). For example, can I buy 6 1.2v cells, connect them in serial, and use the power connector from the oem battery, and assume the player will work?
Also, will the new batteries charge through the player?
Again, thank you in advance.