PWM controller with no float
OK, I have a Morningstar Sunsaver 20a PWM controller. It's not the current generation, which is a 3-stage unit. It's basically a 2-stage without the float stage. It delivers full amps till the targ...
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westend wrote:This is the "conclusion" HiTech came to with his experiments (not saying that's where you got this from). I didn't think they gassed at all unless severely overcharged but a float voltage that's too high does cause gassing.
Yes, AGM VRLA batteries are very tolerant but you don't want to float them so high that the valves are constantly opening. If the valves open, you are losing the oxygen and hydrogen that recombines to form the electrolyte.
