# Additional cell manufacturers
**URL:** https://foil.zone/t/additional-cell-manufacturers/22175
**Category:** Build, Repair & Mod
**Created:** [October 28, 2024, 12:32pm UTC](https://foil.zone/t/additional-cell-manufacturers/22175 "2024-10-28T12:32:49Z")
**Posts on this page:** 15
**Page:** 1
### Author:  [@lishine](https://foil.zone/u/lishine)
#### Post date: [October 28, 2024, 12:32pm UTC](https://foil.zone/t/additional-cell-manufacturers/22175/1 "2024-10-28T12:32:49Z")
I received an offer on Alibaba from a reliable seller I already work with for battery cells from this manufacturer:
[https://www.bakpower.com/about\_en.php](https://www.bakpower.com/about_en.php)
Does anyone have experience with them or know about their reputation?
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### Author:  [@lishine](https://foil.zone/u/lishine)
#### Post date: [October 28, 2024, 12:37pm UTC](https://foil.zone/t/additional-cell-manufacturers/22175/2 "2024-10-28T12:37:32Z")
Cells similar to p45b
> **[bak 45D(2024-10-28 04\_49\_41) (1).pdf](https://drive.google.com/file/d/1kyUqsMcU8YYhXshyU56DqEusW0kkNExW/view?usp=drivesdk)**
>
> Google Drive file.
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### Author:  [@Bzhwindtalker](https://foil.zone/u/Bzhwindtalker)
#### Post date: [October 28, 2024, 2:02pm UTC](https://foil.zone/t/additional-cell-manufacturers/22175/3 "2024-10-28T14:02:45Z")
In my testing of 50E equivalent cells, BAK had significantly higher IR dispersion than EVE, molicell, SAMSUSNG. Not tested this model.
On paper it looks like a very interesting mid power cell, alternative between 50S/P45/P42
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### Author:  [@lishine](https://foil.zone/u/lishine)
#### Post date: [October 28, 2024, 2:16pm UTC](https://foil.zone/t/additional-cell-manufacturers/22175/4 "2024-10-28T14:16:02Z")
Thanks for letting know.
How high was the dispersion in percentage?
Did it comply with the maximum value in datasheet, similar to like here it states \<=5mohm
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### Author:  [@lishine](https://foil.zone/u/lishine)
#### Post date: [November 29, 2024, 6:15pm UTC](https://foil.zone/t/additional-cell-manufacturers/22175/5 "2024-11-29T18:15:00Z")
I recently received BAK 45D cells. These cells are equivalent to the Molicel P45B but are less expensive than the P42A and likely have lower internal resistance than the P45B. In this video, I compare three BAK 45D cells with the P42A model.
Measurements show that their internal resistance is consistent within 0.05 milliohms of each other, and their voltage matches within 1 millivolt. The BAK 45D cells demonstrated one-third the internal resistance of the P42A cells.
[ ](https://www.youtube.com/watch?v=7hznXBsWHSI)
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### Author:  [@Bzhwindtalker](https://foil.zone/u/Bzhwindtalker)
#### Post date: [November 29, 2024, 6:26pm UTC](https://foil.zone/t/additional-cell-manufacturers/22175/6 "2024-11-29T18:26:05Z")
Nice, the IR is very low, how much did you measure with P42?
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### Author:  [@lishine](https://foil.zone/u/lishine)
#### Post date: [November 29, 2024, 6:44pm UTC](https://foil.zone/t/additional-cell-manufacturers/22175/7 "2024-11-29T18:44:12Z")
42D: 2.85mΩ vs P42A: 8.9mΩ
BTW: Both measurements are in the video
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### Author:  [@Larsb](https://foil.zone/u/Larsb)
#### Post date: [November 29, 2024, 7:06pm UTC](https://foil.zone/t/additional-cell-manufacturers/22175/8 "2024-11-29T19:06:37Z")
2.85mohm is incredibly low! How much did you pay per cell?
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### Author:  [@lishine](https://foil.zone/u/lishine)
#### Post date: [November 29, 2024, 7:35pm UTC](https://foil.zone/t/additional-cell-manufacturers/22175/9 "2024-11-29T19:35:45Z")
$3.25 per cell
I’m excited about this cell and looking forward to testing it in water.
If anyone interested in purchasing these cells, I recommend my trusted seller Anbor on Alibaba (link below). When contacting her, please mention you were referred by Pavel Ravits from Israel.
[link to Alibaba](https://www.alibaba.com/product-detail/New-Arrivals-Molicel-INR-21700-P45B_1600454118931.html?chatToken=dTVOQ0lHSDBGNnNIYWVkZGdQNnBUQ1R3ZFhWd2ZzMXJBd05YNWppNmNFNnVOZk9YV0tOM2hIdTBLOVhQYmg2OGVGM0xUbzhwa3hMRW9IRHdVT1E0VzNoaDhxSFQ4VTRyeUF2dDBnNEVVOHM9JnZlcnNpb249MS4wLjA%3D&encryptTargetLoginId=8pctgRBMALNuh8%2B6sZTEQUaKFo3zeu2m6wdkfYSa%2Bs4%3D)
BAK, founded in 2013, manufactures cells for automotive applications, which speaks to their quality and reliability.
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### Author:  [@sat\_be](https://foil.zone/u/sat_be)
#### Post date: [November 29, 2024, 11:06pm UTC](https://foil.zone/t/additional-cell-manufacturers/22175/10 "2024-11-29T23:06:05Z")
It is tabless cells, therefore the low resistance, here a video with tests and comparison of high current cells:
[ ](https://www.youtube.com/watch?v=FqlOwqoLLMQ)
There is also a link with an excel of the results under the video on youtube.
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### Author:  [@lishine](https://foil.zone/u/lishine)
#### Post date: [November 29, 2024, 11:37pm UTC](https://foil.zone/t/additional-cell-manufacturers/22175/11 "2024-11-29T23:37:11Z")
wow, that is a whole lot of data…
And it varies from sample to sample…
His dc result for 45D is different from my sample.
#### As as a side note:
As a matter of fact, depending on consumption of foil assist, we may search for a cell with higher capacity even at expense of resistance.
Like when using 3p or for low power conditions as in
'[Foil Drive Assist, DIY - #1676 by s9tim](https://foil.zone/t/foil-drive-assist-diy/12927/1676)
In the above comparison the highest capacity is 50B and 50S.
Currently BAK does not have an equivalent for 50B.
And there are higher capacity cells, but with higher resistance in the market.
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### Author:  [@Bzhwindtalker](https://foil.zone/u/Bzhwindtalker)
#### Post date: [January 1, 2025, 9:46am UTC](https://foil.zone/t/additional-cell-manufacturers/22175/12 "2025-01-01T09:46:25Z")
Hey Pavel, did you get these cells in a pack yet?
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### Author:  [@lishine](https://foil.zone/u/lishine)
#### Post date: [January 1, 2025, 10:35am UTC](https://foil.zone/t/additional-cell-manufacturers/22175/13 "2025-01-01T10:35:24Z")
I did received the cells and published a test above. Or you mean something else?
I have assembled a battery, but didn’t use it the water yet. 15mohm for 12s3p including two xt90, but I soldered copper directly instead of nickel.
I am considering building a motor test bench for the purpose of loading esc using another 6384 as a generator. Did you think about such thing?
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### Author:  [@Bzhwindtalker](https://foil.zone/u/Bzhwindtalker)
#### Post date: [January 6, 2025, 4:52pm UTC](https://foil.zone/t/additional-cell-manufacturers/22175/14 "2025-01-06T16:52:58Z")
You can use vesc do do a load test without motor. here is the link :
> **[Discord - Group Chat That’s All Fun & Games](https://discord.com/channels/904830990319485030/1266575866931187805)**
>
> Discord is great for playing games and chilling with friends, or even building a worldwide community. Customize your own space to talk, play, and hang out.
Not tested it myself so far
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### Author:  [@lishine](https://foil.zone/u/lishine)
#### Post date: [May 6, 2025, 10:21am UTC](https://foil.zone/t/additional-cell-manufacturers/22175/15 "2025-05-06T10:21:11Z")
45D datasheet specifies 600 cycles up to 60% capacity when charging at 8A and discharging at 30A.
So charging 6s3p battery with M6D at 8A and foiling at max 90A will be under this rating.
Most of the time the current is probably half that, so can expect more % left at 600 cycles.
I wonder if charging at less current will help much…
