Hi all, I am Pat, new guy. Quick background: BSME from U of Arizona. Mostly have a handle on the electronics stuff, but I ain't exactly Will Prowse.
This is not exactly a solar question, but I figure someone here will know.
I built three LTO packs, with some sort of knockoff Yingling 40 Ah 2.3V LTO cells (Hedway type?). Actually, it is 16S3P, which is why I built 3 packs; these batteries are pretty big. I put them I'm our golf cart, which is a 36V
Anyway, I got 3 active capacitor balancers, Heltecs, for 16S batteries. I installed the first Heltec balancer, works great. Balances those cells to within 10mV after a day.I put the second one in, and it fried. Same with the third one (I may have jumped the gun putting the third one in where the second one was. I believe that is the classic definition of foolishness).
Anyone got any ideas why it fried? Maybe I just got lucky with the first balancer? Maybe the balancers need some sort of attention prior to install. I took the second of the 3P's apart, rewired everything, and will try this again. But, this trial and error thing does get expensive.
This is not exactly a solar question, but I figure someone here will know.
I built three LTO packs, with some sort of knockoff Yingling 40 Ah 2.3V LTO cells (Hedway type?). Actually, it is 16S3P, which is why I built 3 packs; these batteries are pretty big. I put them I'm our golf cart, which is a 36V
Anyway, I got 3 active capacitor balancers, Heltecs, for 16S batteries. I installed the first Heltec balancer, works great. Balances those cells to within 10mV after a day.I put the second one in, and it fried. Same with the third one (I may have jumped the gun putting the third one in where the second one was. I believe that is the classic definition of foolishness).
Anyone got any ideas why it fried? Maybe I just got lucky with the first balancer? Maybe the balancers need some sort of attention prior to install. I took the second of the 3P's apart, rewired everything, and will try this again. But, this trial and error thing does get expensive.