sears/ k-mart has a die-hard brand ni-mh, AAs 4 ea are $11. charger for 4 and bats $21. the charger runs on 12 v d.c. by a wall wart iam thinking of mounting a bank of 3 chargers on a plate, on my street truck on my tailgate, so i can charge 12 bats while running 12. my idea is to see how long i could run contenous except for fuel stops.