I got this idea from watching Radio Prepper on utube. I bought 2 battery holders on Amazon.com. That's a total of 16 AA batteries. At 2400 mah (read 2.4 amps/hr) per battery we have a total of 16 X 2.4 amps = 38.4 amps. X 12 volts = 460.8 watts per 1 hour total capacity.

In the unlikely but possible use of Yaesu FT-891 radio at full 100 watts non-stop uninterrupted, those batteries, in theory, should last 4.61 hours. In reality, because of inefficiencies I swag it at about 70 -80% of that.

First, is my math correct? If not, please correct me. Second, the wires individually I am guessing are a little smaller than 18 ga and soldering the 2 holders terminals together in parallel would make them resulting in 2 leads of just over 18 ga. each. Will these lead wires withstand such a draw? It seems to me that the wires, just over 18 ga., would be too thin and would over-heat up and melt - or something worse like damage to the radio.

Please review and explain. Thanks very much.