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Post by theneverman on Feb 27, 2019 22:24:12 GMT
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. System info: 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. Image of battery bank: Thanks.
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Post by tattoo on Feb 27, 2019 22:48:35 GMT
Man that setup is awesome looking..... You say the batteries are 170ah each? That's a good bit of power what are you running off of it......
It looks like it's wired correctly but it's very hard to follow the wires with them going out of sight....
Thanks
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Post by bupkis on Feb 28, 2019 1:17:51 GMT
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Post by theneverman on Feb 28, 2019 17:22:46 GMT
Man that setup is awesome looking..... You say the batteries are 170ah each? That's a good bit of power what are you running off of it...... It looks like it's wired correctly but it's very hard to follow the wires with them going out of sight.... Thanks Coffee pot, lights, the occasional hair dryer for the lady; it's mostly so that I may dry camp with days to spare in the event the sun isn't available (forest camping). I was just about to draw up a diagram but instead I'm going to study the page 'bupkis' sent over and try option 4, assuming I can bend these dastardly cables.
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Post by theneverman on Feb 28, 2019 17:23:15 GMT
Thanks for the link bupkis, I'll study that page and give it a try. Edit: Since my battery config is not stacked I'm thinking of making cables of equal lengths between terminals and go with this: sanity check?
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