I think Shockli 26650 5500mAh 30A and LiitoKala Lii 26650 5000mAh 50A are great cells. Shockli 21700 4550mAh 30A, seems also to be doing well in tests.
I don’t have a type k thermocouple yet so the temp could definitely be a little higher.
I got the pro version which is calibrated to be quite accurate according to Mooch but with of course the mentioned voltage drop. Mooch’s cba is only drawing 10% of the load to keep it as accurate as possible.
I really only purchased mine to confirm the cells I sell are genuine
We should all remember that Sofirn doesn’t actually make batteries. All of their cells are rewraps from other companies so we have to take each battery model on a case-by-case basis. Some will be better than others and they may change cells under the wrap over time.
Ohh, I thought it was somewhat into high drain cells since other brands are mentioned throughout the thread. I gotta learn to read closer what’s the main topic before posting. My bad :person_facepalming:
Concerning cell rewrappers you should start thinking and believing higher (in case you're not doing so already). Believe in honest cell rewrappers without bait and switch or other product degrading practices. Sofirn is not gifting their batteries, and neither is forcing you to buy them.
I've seen some pictures of unwrapped Sofirn cells and it looks like they do not remove OEM wraps, they just add theirs above (see: What's under the wrapper (Sofirn + Thorfire 18650s)). This is nice and I hope for them to continue doing so. It is our right to know what exactly we are buying.
:-)
P.S.: What you think matters, what you believe defines your experience.
I purchased a bulk lot of 100pcs and the above test is from that lot. I have another cell the same from 1 year ago and it performed much much worse. They’ve changed cells within the last 6 –8 months
Current cell - 65.8mm with white OEM wrap
Old cell - 66.3mm with pink OEM wrap
In post 80 I linked some pictures directly from HKJ’s website. I had to use the advanced post editor and have no idea how to make them show up smaller. Sorry.
On my Advanced tab is says Dimensions: _ x_ - like width times height. I put 100% in the first box, nothing in the second box and unchecked the “constrain preportions”. It worked! I would not have thought to try that. Thanks.
Sofirn 26650 5500mAh - Red Line
Sofirn 26650 5000mAh HD - Black Line
5A - CBA 0.01v drop
10A - CBA 0.02v drop
15A - CBA 0.03v drop
20A - CBA 0.04v drop
I’m surprised how close they perform. You’d think they were the same cell minus some capacity. The button top of the HD cell would be adding resistance so I wonder if that’s it’s limitation.