Recent content by tome

Well, how's this for a timely followup? ;-) This Enerdel 2P12S pack is still going strong (8+ years on). I have been using it off and on in the go-kart since this incident and have never had an issue with it. It has been sitting unused and uncharged for the last 1.5 to 2 years and I pulled it...

Duh, it has the discharge capacity right on the front! :roll: Thanks for pointing out the obvious. Apparently I will just need to ride the go kart to drain it :) -Tom

I cannot find any information regarding using a Thunder 1220 in regards to discharging or storage charging/discharging a battery. I am trying to discharge a Li NMC pack to 3.5V/cell but in discharge mode the charger only reads 0.81A (even though I have it set to 5.0A). I also tried the storage...

I didn't have time to charge to 4.2V on Saturday so I left them until today. They were at the charge state I left them, no observable discharge. I am continuing to bring the cells up to 4.2 and will run the go-kart and see how they behave when they discharge. So far they are still charging up...

Got to 38V and decided to put it on the normal LiPo balance charge program to 4.2V/cell. This gets the balance connectors onto the charger so I can watch cell voltage and IR from the charger. IR looks good on all the cells and all are tracking quite closely. Everything seems normal so far... -Tom

Still here, still charging, and no fire yet! Actually they aren't even a bit warm. The charger says the pack is at 35.5 V and pulling about 6.5A. The (damned) Celllogs are showing that the cells are still quite balanced. 2.953 2.984 2.974 2.967 2.976 2.978 2.967 2.963 2.962 2.976 2.970 2.970...

Well, there is a NiMh manual mode that allows setting the current. I set it to 8A and pushed go. It is outside and I am watching (with my fire extinguisher in hand).... -Tom

Thanks. Do you know if there is a way I can get my Thunder 1220 to ignore the low voltage and charge at, say 6A? I assume by 4A per cell you are talking about the "2P" and so about 8A ? at what voltage? -Tom

I have an Enerdel 12S pack I bought from forum member Major a year or two back. It has been a great battery! Over the summer I stupidly left my two Celllog 8S's plugged in. The battery is totally drained. The cells are reading less than 0.5V on my Thunder 1220 that I have been using to...

Newegg doesn't have it, but has better pics of it: http://www.newegg.com/Product/Product.aspx?Item=N82E16817167016 I am using a re-purposed modified HP ESP135 (12V @ 47A) that is working out great. I got two of them for $27 shipped. Otherwise I might be interested. Tom

Cool, thanks. Tom

Thanks that is what I had assumed. I like your idea of using 6 off each Celllog vs 8 from one and 4 from the other. Thanks! Tom

Do you know of any 12S chargers? Thanks, Tom

I have a 12S Enerdel battery that I purchased from Major on the forum, great guy to deal with by the way! I want to hook two Celllog8s to the pack. For the second Celllog8s do I connect the negative (first) lead to cell 9 negative (also cell 8 positive) or do I connect that to the cell 0...

The A123 "Cylindrical Battery Pack Design, Validation, and Assembly Guide" document says this: "Cell Support Secure the cells in place by supporting their outside cases, not their terminal ends. The vibration induced between the terminal ends and the rest of the case has been shown to be...