The Schumacher PSW-22 wheeled manual battery charger is a versatile tool essential for any enthusiast or mechanic. Has engine-start for 6 volt and 12 volt batteries, 40 Amp rapid charge for 6/12-volt, 20a fast charge for 12-volt, and 2 amp trickle charge for 12-volts.

Timer Settings
The timer allows you to set a specified time for charging. After the timer expires, the charger stops charging your battery. The main function of the timer is to prevent over charging while allowing a battery time to obtain a satisfactory charge. Or set the timer to the HOLD position to allow for continuous operation.

Ammeter
The Ammeter indicates the amount of current, measured in amps, that is being drawn by the battery. As a battery takes on a charge, it draws less current from the charger. Correspondingly, the meter will show less current being drawn by the battery. When the current stops decreasing, the battery is charged. The 2 amp charge rate may indicate some activity on the meter, although the meter does not have the resolution to display this low rate.