I have always used a military desulfurization solar panel on my former military HMMWVs. This small panel delivers power in a way that doesn't allow sulfur to build up on the battery plates. maintaining battery performance. What this little panel does NOT do is send a bulk charge to the batteries. I am using this panel hoping to supplement the desulfator with a good charge rate to keep 2 large 12v batteries (24v in series) charged. So far it seems to be working quite well.
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