Those cheapo controllers don't have a lithium charge profile, but are fine for lead-acid batteries. I got a Renogy Voyager pwm - cheap and simple, works fine. That's what I did for my RV starting batteries - they have their own 100W panel and a 10A charge controller - they stay fully charged and ready to go. It would be a 'set it and forget it', obviously at a cost.Īnd yeah, a 50 or 100W panel and a 24V charge controller is another option. Or you could just constantly float them, say at 13.6V or so, but that may not fully charge a lead acid battery - they really need to higher voltage to overcome the internal resistance of the battery.Ī charger has the benefit of staged charging, and termination, charge maintenance. I wasn't clear what kind of battery, but the assumption is it's an AGM or SLA, so you would set your dc to dc converter to a charging voltage appropriate to your battery, say 14.2V or so, it would flow current at full output until the battery reached that voltage. >40A: MPPTs with charge current ratings greater than 40 amps are designed for large solar systems. They’re best used with lithium batteries of 80Ah or greater and lead acid batteries of 130Ah or greater. I don't think the converters have that logic built in. They can usually handle between 400-500 watts of solar at 12 volts and 800-1000 watts of solar at 24 volts. Check out our inventory of 24-volt solar panels below or check out our full catalog of solar battery chargers for more. Duralast 0.8 Amp 12 Volt Battery Charger and Maintainer DL-800MAHD. The output voltage is fixed, so you either put it on a timer or manually terminate charging when tail current reaches your desired level. Duralast 15 Amp 6/12 Volt Marine Battery Charger DL-15D. Click to expand.Fixed output will charge, but doesn't terminate. 1-16 of 552 results for '24 volt solar charger' Results Price and other details may vary based on product size and color.
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