Buying 18650 batteries from Taobao?

Jason Morris

Member
Joined
Dec 24, 2017
Messages
132
Hi. I've bought 18650 batteries from aliexpressbefore. I was wondering if anyone here has bought 18650 from Taobao as their prices are a lot cheaper. Although the cells are not "name brand" their seems to be good deals like 2600mah for $0.80 and 3000mah $1.25. These listings have many orders and positive reviews that have pictures of tested cell capacity of around advertised capacity.
 

BlueSwordM

Active member
Joined
Jul 5, 2017
Messages
430
Well, I would just buy cells from Alibaba, and test them out.

Outright prices may be low, but shipping really isn't, and customs/taxes will be taking its toll on the bill too.
 

Geek

Well-known member
Joined
Aug 15, 2017
Messages
934
Check out Queen Battery. They are known to sell good quality batteries. Also you could look at getting some larger format batteries, for easier assembly.
 

thunderheart

Active member
Joined
Apr 4, 2018
Messages
275
mike said:
Those off-brand 2600mAh and 3000mAh are cheap for a reason. You get what you pay for...

I don't understand the chemistry behind cells myself, but Tom (BatteryHookup) did some explaining here.
https://batteryhookup.com/blogs/new...lithium-batteries-if-its-not-too-late-already

Thanks for the link Mike!
Quote from the article:

Ni-Rich NCM cathode batteries are cheaper to manufacture and offers high initial capacity, but that performance severely degrades at a rapid rate.
That's absolutely true and trustworthy especially when you check the datasheets up. For example Queen Battery QB18650-3000 which i tested is limited at 6.4A continuous discharge by its datasheet. So it's a low drain cell. I think it's because the manufacturer knows that and doesn't want to overrate theproduct. It's quite honest to call a low drain cell a low drain cell and not sell it as a "3000mAh/15A" for example.
In case of the QB18650-2600 the datasheet limits discharge current to 7A at temperatures under 20*C and to 13A above 20*C but Queen Battery still uses "7A" in products description. I like that attitude when they don't try to cheat us using bigger numbers.

BlueSwordM said:
I would also recommend PKCell:
https://pkcell01.en.alibaba.com/company_profile.html
They are a very trustworthy company, as I've bought cells from them on their eBay shop, which works quite well actually.
Me too. In late 2017 i bought a big number of different Ni-MH cell from PKCELL with a good discount and they perform very well. Though never tried their Li-ion cells.
 
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