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Last edited by Bendesa1962; 01-24-2021, 10:53 PM. -
is your BMS throttling your chargers ?
> banks 960W x 12v each. (no idea how many panels. wired in series or parallel)
That's 64A ea
128 A going into a 720A battery bank
What are the set point voltages for the chargers?
What is the PV array voltage ? 12V can't charge a 12.8V battery
How does your BMS throttle the chargersPowerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
|| Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
|| VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A
solar: http://tinyurl.com/LMR-Solar
gen: http://tinyurl.com/LMR-Lister -
Li batteries should have a BMS ( Battery Management System ) that protects the battery from electrical damage. Rapid discharge, rapid charge, over discharge, overcharge - can all damage the battery and cause a failure and sometimes a fire. Because the BMS is usually designed to only handle a small % of the battery power, it often has connections to interact with the charge controller ( CC ), so the CC does not overwhelm the BMS and cause a failure.
Additionally, there should be specific charging instructions for batteries, and you should program your CC's to those specs. A 12hr Absorb time is most likely excessivePowerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
|| Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
|| VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A
solar: http://tinyurl.com/LMR-Solar
gen: http://tinyurl.com/LMR-ListerComment
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