Lt.Dan
Solar Wizard
So I got quite a few things from @Will Prowse when he was generous enough to help out our fine community. One of which was a battery that Will never got around to reviewing, because of reasons of his own...
I got it because I wanted the 280ah cells out of it. I have a few that aren't very healthy in my bank, and wanted to replace them. So I tore it apart to dissect it. And what I found was quite incredible...
Unfortunately I was silly enough I forgot to get a picture of the battery when it was completely assembled. It was pretty basic sheet metal box, very heavy, and was designed to be hung on the wall. And with how much it weighed, it would have needed 6" long Lag bolts into 4x4 studs to hold that thing on a wall! Not very smart imo.
So onto the pics inside:
Lid taken off. First impressions they are using an Overkill 8s BMS. with Bluetooth. Not Bad. Is that a zip tie holding the BMS down?
Closer look at the Breaker. Eww.
Removing the separator from the battery to expose the cells. I can see they used the Factor Bus bars on one connection to save a few pennies, as well as bare copper for the rest. Not terrible I guess, but not great. Cable management could definitely be better.
The negative lead is draped over the positive terminal, and it looks like there is some burning?!?
Looking at the divider, I realize the cells have nothing holding them in place except some very soft foam! These cells at one point were flipped over and crushed the negative lead, as well as arc onto the battery case!!! Big no-no here. Potential fire hazard.
Same on the opposite end.
Among other things, the fan is pretty useless. Extra cost for almost no gain. The main positive terminal is actually pushed inwards, maybe 1/8"-3/16" pushed in compared to the rest. Who knows if that cell is even any good anymore.
Has anybody else had an experience with a battery you purchased that was as bad or worse than this?
I got it because I wanted the 280ah cells out of it. I have a few that aren't very healthy in my bank, and wanted to replace them. So I tore it apart to dissect it. And what I found was quite incredible...
Unfortunately I was silly enough I forgot to get a picture of the battery when it was completely assembled. It was pretty basic sheet metal box, very heavy, and was designed to be hung on the wall. And with how much it weighed, it would have needed 6" long Lag bolts into 4x4 studs to hold that thing on a wall! Not very smart imo.
So onto the pics inside:
Lid taken off. First impressions they are using an Overkill 8s BMS. with Bluetooth. Not Bad. Is that a zip tie holding the BMS down?
Closer look at the Breaker. Eww.
Removing the separator from the battery to expose the cells. I can see they used the Factor Bus bars on one connection to save a few pennies, as well as bare copper for the rest. Not terrible I guess, but not great. Cable management could definitely be better.
The negative lead is draped over the positive terminal, and it looks like there is some burning?!?
Looking at the divider, I realize the cells have nothing holding them in place except some very soft foam! These cells at one point were flipped over and crushed the negative lead, as well as arc onto the battery case!!! Big no-no here. Potential fire hazard.
Same on the opposite end.
Among other things, the fan is pretty useless. Extra cost for almost no gain. The main positive terminal is actually pushed inwards, maybe 1/8"-3/16" pushed in compared to the rest. Who knows if that cell is even any good anymore.
Has anybody else had an experience with a battery you purchased that was as bad or worse than this?
