OPCOM

here is a tidbit.. for a few years I have had four 92 amp-hour AGM lead acid batteries in my comms shelter on the back of the truck The truck has "car batteries" and tey have generally done well. These AGMs are not for cranking, but the electrical hookup allows them to be put in parallel with the truck batteries by throwing a couple switches (100A magnetic breakers). This was done for versatility to allow the truck engine to charge them, and/or the power supplies in the back to charge the truck batteries. Well today the truck would not crank. I cleaned the battery posts, checked everything, and connected a charger. Still no joy, but I had not waited long. I do not know why, after 1 month, the truck's starting batteries would go down. The solargizer should have kept them up, maybe it does not. Anyway, rather than wait for the charger, I engaged the breakers and the truck started right away. The AGM batteries had not been charged in about 3 months. Yet they instantly started the truck.

The moral of the story is having a couple good large AGM batteries in your system, if you are going to start adding batteries.

Also, note there has been NO use of knife switches or other items that can weld themselves together. Use breakers, not switches!

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