Dave, I have been disappointed with automotive "starting" batteries for a DC power supply. They wear out too soon in this type of service. If your voltage doesn't sag significantly in transmit, you may be fine.
Watch out for the bargain batteries. They are often made in another country to low specs. In one USA brand name I researched, it was sub-contracted to another company and actually manufactured by a third company in Mexico. Do your research. I am using a pair of six volt deep-cycle golf cart batteries in series for my main power supply and home power-failure lighting. To maintain charge, I have a 75 amp power supply with an intelligent charge/float option to minimize gas production and maximize battery life. Make sure that the battery wires are appropriately fused. You do NOT want a short circuit with that much energy available. Mike - AA8K Dave Gomberg wrote:
I have always used a lead-acid car battery, it gets charged third shift every night. Any reason to think that is a good or bad choice? It should put out 60A easily, but the voltage will drop a bit under that kind of load.
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