The super batteries can be charged with almost all vehicles, up to a maximum of 14.4 Volts. Do not overcharge, as this will damage the battery. The super B charges much faster than conventional batteries: charging a lead-acid battery takes 7 to 14 hours, during which the internal resistance increases and the charge current decreases. The super B 2600 can be charged within 1 hour at a charge current of 3 Amps. If the charge current is increased to 6 Amps, it will charge in 30 minutes.