Have to say it...

thaiceman

New member
Joined
Jun 8, 2021
Messages
3
I hate you all, this is your fault & now I am going to be playing with the forbidden AA till I figure out something to do with the ones I harvest.
Ive got another opus, an 8 bay charger, shrink wrap, insulators, & my 3d printer is making a holder as I type this.

 

OffGridInTheCity

Well-known member
Joined
Dec 15, 2018
Messages
1,592
Welcome. The founders of this site + some others got me addicted - and now I'm here pay it forward. Whether the payments are saintly or devilish is TBD. If you want to avoid battery addiction leave this site now and never return!
 

floydR

Well-known member
Joined
Aug 23, 2017
Messages
1,157
:)Welcome enjoy you need more tools. at the very least an Internal resistance meter, spot welder, maybe three or 4 multimeters, autobody trim tools( hard plastic to pry open battery cases), kapton tape, silicone tape and or plain eleictrical tape, heat shrink for wires multiple sizes, heat gun, thermal camera or Infra red thermometer
Later floyd
 

thaiceman

New member
Joined
Jun 8, 2021
Messages
3
:)Welcome enjoy you need more tools. at the very least an Internal resistance meter, spot welder, maybe three or 4 multimeters, autobody trim tools( hard plastic to pry open battery cases), kapton tape, silicone tape and or plain eleictrical tape, heat shrink for wires multiple sizes, heat gun, thermal camera or Infra red thermometer
Later floyd
I've got tools unfortunately one can never have enough tools there is always something else you can get, buy, build to make live easier.
 

MBF Dan

New member
Joined
May 14, 2021
Messages
17
Welcome from another newbie. I will say definitely get a way to test the internal resistance of the cells. It will save you some serious head scratching when that charger doesn't want to charge cells. I put it aside and only use the zonflare chargers now. They allow me to check the resistance when I load the cells. As soon as I popped the questionable cells into that charger and checked I all the sudden knew why the other charger didn't seem to like them. Would have saved a ton of time if I could have checked the resistance first.
Oh and you will need to keep the cell database on here open at all times I keep opening cells and jumping in there to see what goodies I just got...
 

floydR

Well-known member
Joined
Aug 23, 2017
Messages
1,157
I've got tools unfortunately one can never have enough tools there is always something else you can get, buy, build to make live easier.
I see. All but the internal resistance meter I was only half serious about needing. I use an YR1030+. Read upon wolf's posts he has done extensive testing and comparison of the various IR meters. His build thread is a good read. Looks like you have a good supply of tools.

later floyd
 

thaiceman

New member
Joined
Jun 8, 2021
Messages
3
I see. All but the internal resistance meter I was only half serious about needing. I use an YR1030+. Read upon wolf's posts he has done extensive testing and comparison of the various IR meters. His build thread is a good read. Looks like you have a good supply of tools.

later floyd
Any reason not to use the internal resistance reading from the Opus at least for the time being?.. If anything I can always use my fluke and some resistors if I need an hyper accurate reading & believe me I understand the value of a good meter I keep one for car batteries around so I can test UPS batteries.

Conveniently I run a computer repair shop here in my town so I have a fairly endless supply of 18650's of questionable quality lol
 

Korishan

Moderator
Staff member
Joined
Jan 7, 2017
Messages
6,449
Greetings @thaiceman. Always welcome and room for more victims, I mean friends.

Nice looking shop you got there. Plenty of space to work with. Maybe another thing you can add to your list is a bucket with water in it in case of a cell that starts to short out (rare, but does happen) when removing from packs. The water helps to cool it down before it goes thermal ;)

As a side note, when posting images, could you use the built in images uploader instead of an outside one. We have no issues with storage space ;) You can just drag drop the images into the editor to make it easier.
 

floydR

Well-known member
Joined
Aug 23, 2017
Messages
1,157
Any reason not to use the internal resistance reading from the Opus at least for the time being?
You can try the opus built in tester"quick test" but it is very inaccurate often high on the same cell that tested low before. alot has to do with the contacts placing a pencil behind the the bottom contact helps. Not too sure about how much it helps. Different cell chemistries test differently too if you don't have a datasheet for a particular cell you can see if there is one here in the cell database. sometimes the IR is given in the datasheet other times it isn't or it is buried.

later floyd
 

daromer

Moderator
Staff member
Joined
Oct 8, 2016
Messages
5,647
thaice: There is no reason to use the internal reading at all! Because its off, it can vary easily 100mOhm.
Its better to buy proper one or notuse it in my world :) Having faulty readings is almost worse than not having any :)
 
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