Batteries for radio controlled model vehicles; accessories for batteries, namely, voltage regulators, power switches, battery chargers, battery volt meters battery testers, for radio controlled model vehicles; power packs, comprising lithium ion type batteries, lithium polymer type batteries, and lithium manganese type batteries for radio controlled model vehicles; accessories for power packs, namely, voltage regulators, power switches, battery chargers, battery volt meters, and battery testers, for radio controlled model vehicles; accessories for lithium ion, lithium polymer and lithium manganese batteries, namely, voltage regulators, power switches, battery chargers, battery volt meters, battery testers, for radio controlled model vehicles such as aircraft, helicopters, cars, and robots