Solar Power for Repeater
and Battery Backup Power
This is my rack-mounted radio Repeater. As you can see, the power cord is un-plugged from AC, but what you don’t see is the 24V feed from the other side of the wall.

These are the two 12V 125AH batteries in series to make 24V. I bought these at the Yuma Ham Convention in Feb. of 2020, just before everything closed down for Covid. They easily run my repeater during the night with plenty of capacity to spare.

On the top is a fuse block with a 80A fuse and current shunt for the 100A meter. I have a switch to toggle from charge to discharge polarity so I can see how much current is going in or out of the battery. The fuse is the shorter one on the top. The small wires are for the current, voltage and wattage display. All high capacity runs are using two 8 gauge wires in parallel, safely providing up to 80 Amps of current. The 80Amp fuse limits the system to just over 1900 watts output.

You can see the battery terminals and the series jumper. Note the two 8 gauge wires to safely handle high current
