Q: How do I PROPERLY wire a bank of 4-170ah Renogy LFP batteries in parallel that is balanced for both charging and discharging? Do I need a charge balancer such as the IOTA DLS product? I’m curious if the diagrams on this page are a legitimate concern for LFP as I’ve noticed my middle batteries don’t hold the same voltages.
I have a full Renogy system made up of 4-100-watt panels, Rover 40A Li cc, to 4-170ah LFP batteries connected parallel into a 2000-watt inverter/charger all wired into my ac panel in my small travel trailer. My only mistake that I’m aware of so far is not knowing the inverter/charger cannot properly charge LFP batteries. Suck. That would have been a nice thing to note on the site under the inverter page; but also, it’s my fault for not noticing. I now have set my inverter/charger to ‘0’ to disable the charger. Waste of money and space.
To assist with shore charging I acquired, at the advice of Renogy tech support a NOCO genius charger for my bank and have yet to use it because I now have a question with my battery bank balancing. I’m a newbie to solar but so is LFP to some extent so I’m looking to keep this very expensive battery investment ($5k+) in tip-top shape. I just want to know the best way to wire them in parallel that will keep them balanced and if a balancer is something to consider assuming it’ll even work with LFP.