I have one cell in one battery in my off grid system that appears brownish and murky. Any thoughts about why this is happening and what I can do about it ?
The voltage to the battery bank is controlled by a three stage controller, so it shouldn't have been over-charged. by the solar panels. I do have a high capacity charger attached to the batteries but it also has a controlled charge. So I think the answer is no. Thanks for the feedback. Do any other possibilities come to mind?
How old is the battery? Eventually, one cell fails. Also, sometimes when charging or adding water, the murk in the sump gets stirred up and needs a day to settle back down. Check it in the morning before charging stirs it up.
Powerfab top of pole PV mount | 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
How old is the battery? Eventually, one cell fails. Also, sometimes when charging or adding water, the murk in the sump gets stirred up and needs a day to settle back down. Check it in the morning before charging stirs it up.
Age of the battery is a factor, if the SG is fine it is probably as @mike95490 says, a cell fart, this can stir the sludge in the sump, have seen it happen, next day clear again, the plates are sacrificial which is why there is space below.
Comments
PbO2 is what the positive plate is made of.
Did you over-charge the battery?
|| 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 ,