Radio Preppers

General Category => Batteries & Solar => Topic started by: Andywragg on May 11, 2018, 08:48:04 AM

Title: 18650 battery testing
Post by: Andywragg 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; (

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). (

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.
Title: Re: 18650 battery testing
Post by: caulktel 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.

Works great.