Mixing Samsung 20A 2500mAh and LG HG2 20A 3000mAh

[Igoinsane]

Hello all. I've been vaping for close to two years now after quitting smoking. I've always stuck with Samsung 20A 2500mAh batteries and recently ordered 4 more on ebay. Except, I received LG HG2 20A 3000mAh batteries instead. I contacted the seller and he was kind of an "A" and argued that I got a the same Amps and a better mAh rating. Since some of my mods use 3 batteries and some 2, what would happen if I had mixed these two batteries in the same mod?

 

[gotch23]

Not recommeded. Different models of batteries discharge differently, also batteries of different age discharge differently. There's diagrams of that around.E.g. on tasteyourjuice (pbusardo's website).

Using a regulated mod will likely avert most catastrophic scenarios, but it's better to be safe than sorry.

Really... only use paired (or tripled, etc.) batteries in the same mod, from the same manufacturer bought at the same time, always discharged togehter. Same, same, same, same.

What could happen? In worst case? It'll go up in flames. Just... don't do it.

 

[Igoinsane]

Great information! Thanks for the response, gotch23.

 

[gotch23]

Np And if you're interested in more Battery-Info check out Baditude's excellent blog (18) Baditude's Blogs | E-Cigarette Forum chapters 9, 11, and 12.

And mooch's blog for real life battery performance tests and stuff Mooch's blog | E-Cigarette Forum

 

[daviedog]

I ordered a Corvette, dealer delivered an Impala.
File a dispute with ebay, don't take that crud..

 

[Jim_ MDP]

I'd be more concerned that you received HG2s, a very (IMO) overpriced and now highly counterfeited battery versus the (I presume) Samsung 25Rs that you ordered.

And were told to shut up and enjoy the windfall. That's fishy.

As to your question... as explained, for several good reasons do not mix 'n match different cells and/or cells of differing age or number of charge cycles.
At the very least the results will be... unpredictable.

 

[BrotherBob]

Welcome and glad you joined.
Might like to read:
18650 Battery Buying Guide for Vapor Users – Wake and Vape Blog
(9) Battery Basics for Mods; the Ultimate Battery Guide | E-Cigarette Forum
(12) Deeper Understanding of Mod Batteries - Part I | E-Cigarette Forum
Battery Safety: Will You Marry Me? - Mt Baker Vapor

 

[Baditude]

Basic concept in "marrying" batteries is to prevent one of the batteries in the set of eventually becoming the weaker of the set. The weaker battery in a set is more prone to stress during use. We obviously don't want to place batteries under stress, as this could lead to a venting battery or thermal runaway in a worse case scenario.

Conventional wisdom in marrying batteries is to start out with new batteries of the same model and make (equals), and discharge the set equally over time. The batteries start out equally the same, and should "age" equally if used in this fashion.

You don't want to break up the set by using one of the married batteries singly in another mod and then later returning that battery to the married set. Doing so would mean the batteries will have been aged differently and can no longer be considered equal.

As a battery ages the mAh of the battery degrades, as the mAh degrades so does the batteries c rating (amp limit). So down the road, your 20A battery may only be a 10A battery.

 

[Larry J]

+1 on everything that has already been said. However, your first mistake was buying batteries on ebay. Find a reputable distributor so you will know your notgetting fakes.