I meant OSN. That's the same active balancer I used, only I used the 10amp version. All the batteries I tested were under 0.3 milliohms.
I'm surprised they are telling you they are new batteries. New LTOs cost a fortune. Here is what they told me about the batteries:
Grade A Yinlong LTO...
From what I understand you can buy new LTO batteries but they are outrageously expensive.
I bought 150 LTOs from OSN. All the ones I tested were close to 40Ahs as advertised. The offered to sell me new ones but I opted for used ones because of the cost.
The primary advantage of LTO is the...
I was thinking about building something where I could throw a lever to switch
from serial to parallel for manually balancing once a year.
Any thoughts on that?
Serial Connection ----< Battery Terminal >--- Parallel Connection
I'm thinking a knife-switch-type connection would work on each...
"have been experimenting with a smallr active balancer with a view to adding one per pack"
Thank you for the very detailed reply.
Can you share which small active balancer and if it worked?
I read bad things in this forum about OSN so I broke off my talks with them. Maybe I'll reconsider that.
I'd be OK with lightly used ones if they meet specs.
I want LEO'S because
- they last forever (at least longer than me)
- they work in any temp
- they are practically indestructible (you can under charge them to zero or over charge them without destroying them)
The only negative for me is the...
I am looking to buy 100 LTO 40 or 45 Ah cells.
I need to find a supplier who is known for providing good cells
so I don't have to mess with shipping them back.
I also need a way to test them individually.
I was thinking about building 6S 12 volt packs
and stack them to get 48 volts...
I really appreciate you being willing to share your work so that others can benefit.
Did you get the BMS integrated? Are you happy with it?
What Balancer do you use? Are you happy with it?
Any recommendation on LTO suppliers for 100 40AH cells?
I was about to buy from OSN but they require 5%...