LIFEPO4 Battery discussion thread

cavedog said:
Not really. Battery 3 cutoff first the other 2 still run.
Click to expand...

The only real issue is battery 3 will not have inverter cutoff value because it cutsoff at bms level for single cell uvp. If that protection fails though that cell could be drained even less than 2.5v so yeah something to think about.
 
There is also the facebook marketplace sellers selling these secondhand cells from pylontech and cfe packs that failed for cheap. Like R200 - R250 a cell but then again, you don't know maybe they have been sitting around and discharged below 2.5v so back to square one.
 
cavedog said:
There is also the facebook marketplace sellers selling these secondhand cells from pylontech and cfe packs that failed for cheap. Like R200 - R250 a cell but then again, you don't know maybe they have been sitting around and discharged below 2.5v so back to square one.
Click to expand...
Those are pouch cells? I would not touch them
 
cavedog said:
The only real issue is battery 3 will not have inverter cutoff value because it cutsoff at bms level for single cell uvp. If that protection fails though that cell could be drained even less than 2.5v so yeah something to think about.
Click to expand...
Lets not worry about things that have very low statistical odds and might never happen.
 
cavedog said:
There is also the facebook marketplace sellers selling these secondhand cells from pylontech and cfe packs that failed for cheap. Like R200 - R250 a cell but then again, you don't know maybe they have been sitting around and discharged below 2.5v so back to square one.
Click to expand...
Haven't you learned your lesson yet :P
 
I would not even buy a new pylon battery

To many issues with them and their old bms
 
DTBA said:
I would not even buy a new pylon battery

To many issues with them and their old bms
Click to expand...
Never mind the 15S configuration.

I bet the "many issues" are from people overcharging them thinking they 16S and bms is too stupid to protect it.
 
wingnut771 said:
Never mind the 15S configuration.

I bet the "many issues" are from people overcharging them thinking they 16S and bms is too stupid to protect it.
Click to expand...
Pretty much this also some weird issue where they blame sunsyk inverters overcharging them even in closed loop coms.

Okay sure but why does your bms cut off when this happens? Like 99% other batteries.

Pylontech US3000 batteries swelling

Hi, Everyone. I am based in South-Africa, Limpopo, Tzaneen.I have a Deye 8kw inverter connected to 8x Pylontech US3000 batteries, rack mounted. I noticed that one of the batteries seemed skew in the rack, found it is due to swelling. Further inspection revealed that 6 (3 badly and 3 starting) of ...
powerforum.co.za powerforum.co.za
powerforum.co.za

Pylontech Swollen Batteries

^^Swollen Pylontech Batteries^^ If there is anyone that experienced swollen Pylontech batteries where the distributor / importer / contractor doesn’t want to honor the warrantee please make contact with me … we are working on a very important case …. Thx u
powerforum.co.za powerforum.co.za
 
Any idea why CFE batteries are getting sold all over the place for R5000?
 
DTBA said:
Pretty much this also some weird issue where they blame sunsyk inverters overcharging them even in closed loop coms.

Okay sure but why does your bms cut off when this happens? Like 99% other batteries.

Pylontech US3000 batteries swelling

Hi, Everyone. I am based in South-Africa, Limpopo, Tzaneen.I have a Deye 8kw inverter connected to 8x Pylontech US3000 batteries, rack mounted. I noticed that one of the batteries seemed skew in the rack, found it is due to swelling. Further inspection revealed that 6 (3 badly and 3 starting) of ...
powerforum.co.za powerforum.co.za
powerforum.co.za

Pylontech Swollen Batteries

^^Swollen Pylontech Batteries^^ If there is anyone that experienced swollen Pylontech batteries where the distributor / importer / contractor doesn’t want to honor the warrantee please make contact with me … we are working on a very important case …. Thx u
powerforum.co.za powerforum.co.za
Click to expand...
There is a mybb forumite (@AchmatK) using pylontech and sunsynk with no issues though.
 
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