Samlex has black boxen that pass-through the regular DC power supply, handles the trickle maintenance charging of the backup battery (any size you like)
Instant switch-over to backup if the main source stops or glitches.
The 25A one is cheap, 100A obviously more.
Instant switch-over to backup if the main source stops or glitches.
The 25A one is cheap, 100A obviously more.