If you are building packs today, which cells to choose?

Batteries, Chargers, and Battery Management Systems.

Re: If you are building packs today, which cells to choose?

Postby cwah » Mon Jun 19, 2017 2:38 pm

Anyone can explain why mg1 could be better than pf apart from the price? I had good experience with pf and even punctured some of them. No issue apart from voltage loss.

Never heard of issue with pf either.

But heard some issue in the past with lg cells
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Re: If you are building packs today, which cells to choose?

Postby tomjasz » Thu Jun 22, 2017 10:21 pm

PF are getting old, manufacturing seems to improve. I still like some of the older cells, but i believe they get better every year.
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Re: If you are building packs today, which cells to choose?

Postby cwah » Fri Jun 23, 2017 2:05 am

Which cells are you refering to? I checked with nkon and they pf cells are still being manufactured.

They also are one of the best $/wh
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Re: If you are building packs today, which cells to choose?

Postby cal3thousand » Fri Jun 23, 2017 4:34 pm

Wheazel wrote:
cal3thousand wrote:I think I would also include NCR18650b. Properly sized into 6P+ groupings, they will easily provide 40A continuous at 2C and be happy about it. If you keep these cells with 20% to 80% SOC, you can exceed 28,000 cycles.

There's many a good reason that Tesla uses them in the Model S. You just have to make sure you size the pack large enough that 2C will cover your Current requirements.


This sounds like pure BS. The second statement about Tesla is as already pointed out not correct, but please provide some evidence for the first claim.
My guess is that the B cell will suffer from extended use at anything higher than 0,5C.

http://lygte-info.dk/review/batteries2012/Panasonic%20NCR18650B%203400mAh%20(Green)%20UK.html


I got the information from this site: http://blog.evandmore.com/lets-talk-abo ... ncr18650b/

He links to a study that is difficult to retrieve. Not calling it proof, but that's where I read it.
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