[Elecraft] K2 & Solar Power

[rlewis@staffnet.com]

From Bob Lewis (AA4PB):

I maintain that unless you carefully monitor the battery charge condition, one should always use a charge controller when charging from a solar panel. Even if the panel capacity is small compared to the size of the SLA battery, the panel will attempt to output 16 volts or so under bright sunlight. If left on even a large battery long enough, this will overcharge it. A $25 charge controller is cheap insurance.