I said all along I was on the right track,... I just didn't know it was a railroad track with an oncoming train. The pack shorted out today and burned all the wires up. LOL I will salvage it I'm sure.
The nimh battery build...
- Thread starter deacon
- Start date
After all the ups and downs with this battery it looks as though I am pretty close to getting it right. The biggest problem with the cheap chinese batteries, I think, is that the amp hour rating is useless or worse depressing. I am never sure how many more batteries I need to make this work. With what I have now I think I am running over half throttle of an SLA pack.
Considering that the sla 12ah pack for my bike would be a hundred bucks give or take, adding a few more nimh to the pack at a time while the one I have still works makes sense.
I honestly believe ten, or so, more ah (mfg rating) should get the battery up to performance level. I have five more ah in the pipeline from china. I would like to get the performance up to sla levels then I can figure out what it takes to do that. Then I will have to begin looking at the range issue.
The controller I have is the heavy duty 24v from tnc. I run it at 36v so I could run it at anything in between. Thirty volts would be doable set up two 12v batteries then a six volt one. That would get me up to the 30amps with what I have coming in, but I really want to leave it at 36v so that in the meantime I can use it as a piggy back to my existing sla pack.
That being the case I will probably be working through the summer. If I was running a 25v hub motor I would most likely have more than enough energy now to run it.
Considering that the sla 12ah pack for my bike would be a hundred bucks give or take, adding a few more nimh to the pack at a time while the one I have still works makes sense.
I honestly believe ten, or so, more ah (mfg rating) should get the battery up to performance level. I have five more ah in the pipeline from china. I would like to get the performance up to sla levels then I can figure out what it takes to do that. Then I will have to begin looking at the range issue.
The controller I have is the heavy duty 24v from tnc. I run it at 36v so I could run it at anything in between. Thirty volts would be doable set up two 12v batteries then a six volt one. That would get me up to the 30amps with what I have coming in, but I really want to leave it at 36v so that in the meantime I can use it as a piggy back to my existing sla pack.
That being the case I will probably be working through the summer. If I was running a 25v hub motor I would most likely have more than enough energy now to run it.
I just finished resetting the battery pack to 24v and what I think is 30ahs. I am going to ri give it a shot tomorrow to see how it does. If it pulls like I think a 24v full power sla would, I will feel pretty confident. So lets see how it does tomorrow.
What ever you do, do not build anything with the aa nimh batteries from china. I can't for the life of me figure out what the help they are doing. I am going to stay at it but it is a not a project I would ever recommend for anyone else.