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Posted

Hi guts - have moved from 1 5kva axpert inverter with 20 x gell deep cycle batteries to 2 x axpert parallels with 4 x US3000 pylontech banks - about 300ah output - can I use 3 banks - each battery bank is 100ah with the pylontech for extra power - my 20 batteries are still perfect 

Posted

Pylontech is 15-series LFP and cannot go above 54V (the BMS switches off). Lead-acid can float at 54V but it would take a week to recharge it at this low a voltage. It needs 58V to absorb properly.

If you had a 16-series LFP battery, that would change things a bit. It would still not be advisable (mostly because of the danger of a bad lead-acid bank in parallel with a healthy LFP string!), but it would at least work in an emergency 😉

 

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