Battery Clearing House

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MorbidlyObeseKoala   10 W

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Battery Clearing House

Post by MorbidlyObeseKoala » Apr 16 2020 10:51am

Found a new wholesaler for used lithium. Wondering if anyone had purchased cells from Batteryclearinghouse.com

Their prices seem pretty reasonable although most descriptions state the cells are estimated at ~80% capacity.

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dequinox   10 kW

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Re: Battery Clearing House

Post by dequinox » Apr 16 2020 11:57am

Interesting... doesn't look like they have much yet. I'll be interested to watch this and see if it grows.
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Re: Battery Clearing House

Post by amberwolf » Apr 16 2020 10:17pm

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wisetk   1 µW

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Re: Battery Clearing House

Post by wisetk » Aug 21 2020 3:08pm

A few weeks ago, I bout a 100+ SPIM08HP from them. They came in two boxes with no bubble wrap and no protective shipping measures besides the 2 boxes they came in. I literally spent hours and hours trying to straighten the terminals out (click link below to see a video and some pictures that I provided them). when I contacted them to return 10 pouches that were physically bent and their middle section got softened, they refused and said their warranty covers only below 80% capacity. I emailed back and forth with their salesperson named Dan. what a horrific business model. I got attracted to the cheap price and totally forgot about customer service, which in this case does not exist. Never buying from them again. https://drive.google.com/drive/folders/ ... sp=sharing

joshuahuang   10 mW

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Re: Battery Clearing House

Post by joshuahuang » Jan 09 2021 8:34pm

wisetk wrote:
Aug 21 2020 3:08pm
A few weeks ago, I bout a 100+ SPIM08HP from them. They came in two boxes with no bubble wrap and no protective shipping measures besides the 2 boxes they came in. I literally spent hours and hours trying to straighten the terminals out (click link below to see a video and some pictures that I provided them). when I contacted them to return 10 pouches that were physically bent and their middle section got softened, they refused and said their warranty covers only below 80% capacity. I emailed back and forth with their salesperson named Dan. what a horrific business model. I got attracted to the cheap price and totally forgot about customer service, which in this case does not exist. Never buying from them again. https://drive.google.com/drive/folders/ ... sp=sharing
I'm going to buy the 70 pack of SPIM08HP when it comes back in stock. For $2/cell as long as most of the cells are still around 0.8mohm internal resistance, I'll be happy. I emailed them and the guy said he tested 10 random pouches, all were 0.8mohms. I'm just worried they might have varying capacity. How close together were the capacities of ur cell?

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DogDipstick   100 kW

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Re: Battery Clearing House

Post by DogDipstick » Jan 10 2021 2:21am

joshuahuang wrote:
Jan 09 2021 8:34pm
wisetk wrote:
Aug 21 2020 3:08pm
A few weeks ago, I bout a 100+ SPIM08HP from them. Never buying from them again. https://drive.google.com/drive/folders/ ... sp=sharing
I'm going to buy the 70 pack of SPIM08HP when it comes back in stock. For $2/cell as long as most of the cells are still around 0.8mohm internal resistance, I'll be happy.
I got 24 cells of very good consistency from Tom Amerman of BHU. I have tesetd both earlier batches, not so good, and later.

none reached teh claimed 0.0008 Ohm you state,, 0.8 mOh. Maybe 8mOh.. but not 0.8mOh.

Not near 0.8mOh. That guy is wrong who said tht. No where near point eight milli ohm.... . 1000Hx dc IR method.

The old ones were 6 mOh or greater.. this newer batch all gave good capacity ( 95% or greater) and low IR ( 4mOh or less.. 0.004Ohm. )

.... never had any Battery Clearing house cells.
84v of Ironhorse XC.. :) :bolt: by Chevy :bolt: :D Ok So that was what you call a "glitch:" :twisted: (...No Mom. The formula is Kaw > 1(Hr) = Impounded. The math checks out. I'll be fine. ).. :? Broke20Horsies! 17,830w !! :x 1 (pound / second) Horse Power = 338.24 M^2 Kg^2 / Sec^4 ( :twisted: prove me wrong :twisted: ) :| (Taramps?Yall?) :confused: Fabricator @ BSECo. Inc.

john61ct   100 GW

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Re: Battery Clearing House

Post by john61ct » Jan 10 2021 11:06pm

So long as capacity is 90+% of rated Ah, ideally 95+% then resistance should be fine too.

I would not bother with SoH lower than that, IOW no to worry too much about ESIR in your go/no-go factors.

joshuahuang   10 mW

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Re: Battery Clearing House

Post by joshuahuang » Jan 12 2021 8:12pm

DogDipstick wrote:
Jan 10 2021 2:21am
joshuahuang wrote:
Jan 09 2021 8:34pm
wisetk wrote:
Aug 21 2020 3:08pm
A few weeks ago, I bout a 100+ SPIM08HP from them. Never buying from them again. https://drive.google.com/drive/folders/ ... sp=sharing
I'm going to buy the 70 pack of SPIM08HP when it comes back in stock. For $2/cell as long as most of the cells are still around 0.8mohm internal resistance, I'll be happy.
I got 24 cells of very good consistency from Tom Amerman of BHU. I have tesetd both earlier batches, not so good, and later.

none reached teh claimed 0.0008 Ohm you state,, 0.8 mOh. Maybe 8mOh.. but not 0.8mOh.

Not near 0.8mOh. That guy is wrong who said tht. No where near point eight milli ohm.... . 1000Hx dc IR method.

The old ones were 6 mOh or greater.. this newer batch all gave good capacity ( 95% or greater) and low IR ( 4mOh or less.. 0.004Ohm. )

.... never had any Battery Clearing house cells.
what's BHU? These cells are rated for .008 ohms (0.8mohms). 8mohms would be considered high for these cells. What voltage did you measure the IR at? It should be measured a 3.6v or a tiny bit over, maybe 3.625v

joshuahuang   10 mW

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Re: Battery Clearing House

Post by joshuahuang » Jan 12 2021 8:13pm

wisetk wrote:
Aug 21 2020 3:08pm
A few weeks ago, I bout a 100+ SPIM08HP from them. They came in two boxes with no bubble wrap and no protective shipping measures besides the 2 boxes they came in. I literally spent hours and hours trying to straighten the terminals out (click link below to see a video and some pictures that I provided them). when I contacted them to return 10 pouches that were physically bent and their middle section got softened, they refused and said their warranty covers only below 80% capacity. I emailed back and forth with their salesperson named Dan. what a horrific business model. I got attracted to the cheap price and totally forgot about customer service, which in this case does not exist. Never buying from them again. https://drive.google.com/drive/folders/ ... sp=sharing
Have you measure the IR on the cell? What mohms are you getting and how close are they to each other?

thepronghorn   1 kW

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Re: Battery Clearing House

Post by thepronghorn » Jan 13 2021 1:59pm

joshuahuang wrote:
Jan 12 2021 8:12pm
DogDipstick wrote:
Jan 10 2021 2:21am
joshuahuang wrote:
Jan 09 2021 8:34pm
wisetk wrote:
Aug 21 2020 3:08pm
A few weeks ago, I bout a 100+ SPIM08HP from them. Never buying from them again. https://drive.google.com/drive/folders/ ... sp=sharing
I'm going to buy the 70 pack of SPIM08HP when it comes back in stock. For $2/cell as long as most of the cells are still around 0.8mohm internal resistance, I'll be happy.
I got 24 cells of very good consistency from Tom Amerman of BHU. I have tesetd both earlier batches, not so good, and later.

none reached teh claimed 0.0008 Ohm you state,, 0.8 mOh. Maybe 8mOh.. but not 0.8mOh.

Not near 0.8mOh. That guy is wrong who said tht. No where near point eight milli ohm.... . 1000Hx dc IR method.

The old ones were 6 mOh or greater.. this newer batch all gave good capacity ( 95% or greater) and low IR ( 4mOh or less.. 0.004Ohm. )

.... never had any Battery Clearing house cells.
what's BHU? These cells are rated for .008 ohms (0.8mohms). 8mohms would be considered high for these cells. What voltage did you measure the IR at? It should be measured a 3.6v or a tiny bit over, maybe 3.625v
0.008 ohms is 8 mOhms

joshuahuang   10 mW

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Re: Battery Clearing House

Post by joshuahuang » Jan 14 2021 3:32pm

oops i mean .0008 ohms or 0.8 mohms.

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DogDipstick   100 kW

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Re: Battery Clearing House

Post by DogDipstick » Jan 15 2021 11:55am

joshuahuang wrote:
Jan 14 2021 3:32pm
oops i mean .0008 ohms or 0.8 mohms.
They are not that " .0008 ohms or 0.8 mohms."

I have tested many many. From a few different batches.

They are 4mOh in good, condition, and ( higher) 8 mOh or more, in used,.

Could you show us this reference to the figure you state?

I can show you 22 cells on a single datalog.

There are some on endlless sphere I have shown.

I can measure that low, I assure you. I do build batteries where the individual cell groups all under 1mOh. I have a million datalogs.

They are not 0.0008 Ohms. Nope.


I use a 1000Hz Dc kelvin bridge ( Wheatstone bridge). PID controlled IR determination. ONly on charge at room temp of 59*. THE one accepted by 90% of the RC lipo community. Wayne Giles, MSC guy, same system. ECT. Reports accurate over hundereds of cells for me.

Here is one cell I bought from BHU. Battery Hook Up, Tom Amerman, Allentown. With holders. This was one of the worse cells. The better logs are on the computer in the shop. Datalog. 1 cycle ( 2 charges, one full and one to storage, and 1 discharge... )

This data log was created 4/18/20. THIS cell is 5 mOh. Measured.. twice..... for repeatability, reliability, and reproducibility.
Attachments
SPIM08Zoom.PNG
SPIM08Zoom.PNG (2.64 KiB) Viewed 949 times
SPIM08IR.PNG
SPIM08IR.PNG (29.09 KiB) Viewed 949 times
84v of Ironhorse XC.. :) :bolt: by Chevy :bolt: :D Ok So that was what you call a "glitch:" :twisted: (...No Mom. The formula is Kaw > 1(Hr) = Impounded. The math checks out. I'll be fine. ).. :? Broke20Horsies! 17,830w !! :x 1 (pound / second) Horse Power = 338.24 M^2 Kg^2 / Sec^4 ( :twisted: prove me wrong :twisted: ) :| (Taramps?Yall?) :confused: Fabricator @ BSECo. Inc.

thorlancaster328   100 W

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Re: Battery Clearing House

Post by thorlancaster328 » Feb 20 2021 3:02am

The SPIM08HP cells are very temperature dependent and you won't see low IR unless the cells are at 30 celsius or higher. Still the lowest I've gotten is around 2 milliohms. Far from advertised but not bad for the price.
When I got a few bent cells, they sent me free replacements.

OTOH, the purple 18650s that I've gotten from them have all been 95% capacity or higher. Pretty much brand new in terms of capacity and IR.
Find weakest component, upgrade it, repeat until satisfied. Rome was not built in a day.
When in doubt, get bigger MOSFETs / Batteries / Motors / Etc.

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