An exchanger switch for use with a plurality of batteries that extends the useful
life of the batteries. In a generator, a first battery can provide power to an
external load while also providing power to recharge a second battery. When the
first battery is depleted to a certain voltage level, the exchanger switch is activated
and the second battery can begin providing power to the external load. The exchanger
switch also directs a portion of the power from the second battery to recharging
the first battery. The exchanger switch allows the generator to continue providing
power to the external load without interruption. Using the batteries as alternating
power sources allows the exchanger switch to increase the useful life of the batteries.
