The batteries on hamcall are big 'uns! $40 plus free ship for 25 AH and a carrybox is very tempting.
But how to charge them?
I use a 7 AH battery originally meant for UPS service. Not the ideal, I know, but it does the job and I don't use battery power much anyway.
For a charger, I found a discarded-because-the-battery-failed UPS, extended the battery connections outside the case, and plugged in. Of course you have to keep an eye on it because if the power fails it will go to invert mode!
Anybody have experience with this sort of setup as an inexpensive charger? I know it won't work with KBT2 because of the diode, but what about external gel cells?
73 de Jim, N2EY
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