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Author Topic: 18650 battery testing  (Read 178 times)

Andywragg

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18650 battery testing
« on: May 11, 2018, 08:48:04 AM »
So off the back of my 18650 bulk purchase, i thought I'd better get some means of testing them.

First of all I ordered one of these;

https://www.ebay.co.uk/itm/Battery-Capacity-Meter-Discharge-Tester-18650-Li-ion-Lithium-Load-Resistors-UK/122484972541?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649


It came the other day, and I havent had chance to use it yet, but I kind f had a WTF moment when I thought about how long it would take me to process 40 cells using this device.

I also thought about how to charge them to enable the tests. I do have a number of the individual cell chargers that you get with the cheap ebay flash lights. I also have on of of the Xtar smart 2 cell chargers but that has developed a problem where only one cell charges.

I looked a couple of videos from guys that are processing a good number of cells and they are using the Opus BT-C3100 charger and tester.  So I've got a pair of them (the V2.2 version) on order from GearBest. This will allow me to test 8 cells concurrently, and also allow me to charge other cell types and chemistrys (secret switch inside alters the max charge voltage).

https://www.gearbest.com/chargers/pp_174044.html?wid=1433363

Obviously at some point i need to consider the solar aspect but this will do for the QTH. Once the chargers arrive I'll get busy testing the cells out and keep you posted.
Once a 'STAB in the Dark'
M6UAW

caulktel

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Re: 18650 battery testing
« Reply #1 on: May 12, 2018, 01:50:40 PM »
Hi Andy,

I had to do the same thing when I started working with 18650 batteries but I bought this  tester.

 https://www.ebay.co.uk/itm/1pcs-Constant-Current-Electronic-Load-9-99A-60W-30V-Battery-Discharge-Capacity-C/191883750242?epid=2024203215&hash=item2cad29ab62:g:mp4AAOSwintXSj2m

Works great.

Joel
N6ALT