Backup power for the shack

Goals:
1. Provide 12 Volt battery backup for the shack.
2. Automatic switchover when power is lost.
3. Unit must be portable.
4. Must automatically charge batteries.



Major equipment:

Tripp-lite inverter model APS1250 (home use only). It's a DC-to-AC inverter with automatic line-to-battery transfer and integrated battery charger. 1250 watts continuous AC output in inverter mode, 1440 watts continuous AC output in AC mode. Supports 120V AC output from a 120V AC line power source or 12V DC battery source.

Four 40ah batteries courtesy of Bob KC2LTX.

200 Amp Fuse.

I hooked up this inverter to four 40 ah batteries, with a 200amp fuse. The inverter keeps them charged & if power goes out- it automatically transfers power over to the batteries. I have this set up on a cart with wheels- if it has to be moved in an emergency. I have my radio's & computer hooked up to it & can have many hours of run time if I lose power. The inverter always keeps the batteries topped off & ready to go. It could also run with one large 40-75ah battery as well.

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