acceptance charging rate AGM batteries
Hi all, It is generally thought that acceptance rate for a flooded deep cycle battery is about 12.5 amps per 100 amp-hours of capacity once the bank is at 85% state of charge. I know that accept...
Forum Discussion
MrWizard wrote:
actually the chemistry of batteries is
tilted in favor of discharge
it always has been
the amount of power needed can vary, and can be extreme
its reversing the chemical process that is harder to do and uses more power
yes you can dead short a battery
but in all automotive vehicles
the intense starter drain, is much higher than the recharge rate
the battery is not hurt by this
unless the car won't start and you totally drain the battery
That's fine with thin plate batteries, where there is a surplus of very thin plates designed to handle that surge capicity for starting.
My AGM is very special purpose, being telecom surplus, has few plates, but there are very few of them, they are thick and very heavy and are pretty much 10 year life design batteries. It's the "few Plates" that both limits the charge and discharge rate, not enough surface area for the battery acid chemistry involved to allow more amps in a completed circuit, without voltage drop, which excacerbates the need for more amps drawn. Those more amps drawn to compensate for voltage loss makes expensive parts inside a ham radio overheat, burn up, blue smoke, and fail.
I have a workaround already... run the Honda Generator with the Megawatt 30 when I want to run barefoot with 100 Watts on the ham radio. Radio pulls 23 amps tx, Switching power supply unit makes 30. Plenty of surplus, and the battery acts as a buffer when keying the mic.
