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Old 03-09-2021, 04:20 PM   #21
Pat911
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Join Date: Dec 2020
Location: Melbourne, Australia
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Default Re: Emergency Dead Lithium Help

Yes, wise choice to move on.

There are similar pouch style cells on AliExpress if you donít want to modify your setup too much.

Cheers
Pat.
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Old 03-09-2021, 06:19 PM   #22
Silenttrouble
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Join Date: Dec 2019
Posts: 18
Default Re: Emergency Dead Lithium Help

I'm afraid of the Ali express batteries, the fear mongering has gotten to me.

Supposedly:
Over stated specs
Higher chance of fire (poor manufacturing techniques or qc)
Little to no recourse on $1500 spend

I don't know how founded they are but people got me afraid.

I did find out today the new leaf 7s3p would fit perfectly. And at a good price, I saw bumblebee sold guys here 95% ish health for 800 ish dollars. I'd be all over that because I'm desperate but alas they are out so I'm scanning the net every day hoping to stumble on them.
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Old 03-10-2021, 06:09 AM   #23
Pat911
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Default Re: Emergency Dead Lithium Help

Iíve bought many pieces of electronics from AliExpress and Alibaba and havenít had one bad experience yet, although I havenít purchased any li-ion cells as I have plenty of gen1 Leaf cells to keep me busy for a while. When they run out I will definitely purchase new cells from AliExpress/Alibaba as opposed to sourcing reclaimed cells. My new to me 65Ah gen1 modules are measuring only about 40Ah. Thatís a waste of space and weight.

As for overrated specs, check the size and weight of the cells youíre considering and compare them between sellers. If one seller has the same physical spec cell, but is claiming higher capacity than other sellers, even only 10%, chances are theyíre lying. By comparing the same physical cell from different sellers you can get a pretty good idea of capacity.

If youíre worried about safety then go for lifepo4, theyíre much less prone to catching fire but they have a lower energy density than Lithium Polymer. Lithium Polymer (LiPo) is safe when used within its specs. I do understand your concern regarding quality control and safety but where do you think most of the reclaimed cells you can buy were originally manufactured?

I do agree that warranty will be an issue, mainly due to shipping costs, but if you pay with PayPal you can dispute the original transaction if goods arenít what they have been represented as.

Food for thought

Cheers
Pat.
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Old 03-10-2021, 09:26 AM   #24
Volt_Ampere
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Join Date: May 2012
Location: Rio Verde, Az
Posts: 3,492
Default Re: Emergency Dead Lithium Help

I have stopped dealing directly with China companies for anything of value. Shipping takes a long and variable amount of time and dealing with warranty returns is a crap shoot at best.
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Old 03-10-2021, 09:52 AM   #25
Silenttrouble
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Default Re: Emergency Dead Lithium Help

That's fair,

As far as where do they come from I feel a lot better about Korean standards than China. But maybe that's me being unfair.
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