Recent content by jonyjoe303

When I first started buying wire I was buying the cheapest which was usually copper clad wire CCA (they usually call it speaker wire), that wire corrodes easily, the one to buy is pure copper OFC wire (oxygen free wire) they call it welding wire or primary wire. Now I only buy OFC wire its...

Some balance chargers will balance at too slow rate. I had an ISDT balance charger that balanced at 1 amp and it wouldn't balance my 220ah lifepo4, it would keep shutting down. I also tried the balance charger on a smaller 3s10p li-ion battery that was out of balance and it would also shut down...

Something you can do is get active balancers and continue to use the pack that way. I been using a 220ah 4s lifepo4 for almost 5 years with active balancers. Without the active balancers 1 cell was always full before the other 3 cells, with the active balancers they reach full at the same time...

I been charging my 220ah lifepo4 to 3.65 everyday for almost 5 years. I prefer 100 percent everytime, it doesnt seem to affect anything on my battery which is still performing as when it was new. But I rarely use more than 50 percent of the battery. From my own experience charging to less than...

can you post a picture of what exploded.

I have a 4s active balancer on my 220ah lifepo4, I've kept them connected 24/7 for the past 3 years during charging and discharging. On my battery it goes out of balance quickly thats why I use the active balancer instead of trying to find the bad cells (160 cells total). This is the picture of...

I seen videos before of NASA also doing tests on lithium cell batteries being encased in cylinders holders similar to the ones mentioned. On the videos I saw, when a cell caught fire it was from the ends and the casing did prevent the other cells from catching fire. But on the test I saw the...

I always wear safety glasses when working on the cells, no need to buy expensive glasses even the cheap ones from the dollar store is better than nothing. The more expensive glasses have better clarity. The biggest hazard is flying pieces when taking cells apart, I once had a sidesnip cutters...

for new cells I would just use an IR tester, that will weed out the weak ones. Some cells pass the capacity check, self discharge and still have high IR. Cells with high IR will cause balancing issues later on. I myself wouldn't waste my time building a battery pack without testing the IR. Even...

I charge my powerbanks to 100 percent and they have last me for years. You only keep them at half charge if you won't be using it for a long time. If you only charge them to 90 percent they might last longer but then you have to monitor while charging. To me its not worth the hassle, like my...

Any solar controller that you can adjust the bulk voltage setting is compatible with Li-ion, as long as the bulk setting can be adjusted to the voltage you need. All controllers are cv/cc which is what lead,li-ion and lifepo4 need. As far as voltage the only difference between li-ion and lifepo4...

Until everything is tested to work as advertised, the BMS, the solar controller, it would be a good idea to use an overvoltage protection relay to monitor the battery voltage and if the voltage gets to high, the protection relay will disconnect the solar panel. Thats how I run my solar system...

If you have a 10s li-ion 36 volt battery pack ( 4.20 volts x 10s = 42 volts) , 42 volts is the max you want the charger never to go over. In your situation you will use the "USER" setting of the rover controller and set the boost voltage to 42 volts or less, same with the overvoltage disconnect...

I would not recommend charging lithium with solar, unless it was a very slow rate where there is no situation where the BMS will ever activate. If the BMS ever activates while charging lithium, the solar controller will try to forcibly charge the battery, causing voltage surges which can damage...

I have an odyssey 3 year old 16ah agm and also a 11 year old fullriver full throttle 27ah agm. I just charge them as a regular lead acid battery constant voltage/constant current at 3 amps. The only thing you need to pay attention too is the recommended bulk voltage. Some high performance agm's...