What I like about the 5v batteries, and what you should too

[NewUnit16]

I just wanted to make a quick post about these 5v batteries and my experience with them. I currently have four of them in rotation and a single charger.

Likely the best feature of these batteries is its rapid decline in output when they are low. Often when I use other Li-ion batteries the performance degrades slowly. I will be vaping at 3.6-3.8v for hours before realizing the issue is the battery. These will work nearly 100% right until they are "dead", at which point you will get a small wisp of vapor, followed by air. It is nice to know when exactly they need a charge.

The size of the battery is perfect. They should fit nearly any mod that accepts an 18650, and even those that take 17670's (like my GGTB). One of the four I have was a bit crooked, but was easily remedied by bending it back into shape. The size of these batteries is fantastic.

They are roughly 600mAh, which I find to be rather accurate. In a 12 hour shift at work, I roll through about 1.5 of them, vaping when I please. I do about 2.5mL a day and run a 2Ohm 901. In other words the battery life is excellent considering the higher voltage you are running.

The charger seems well built and works great. Which leads me to the "cons" of these batteries.
*Flat top. This is a non-issue for me as the GGTB hits the + contact fine (i thought it wouldnt, but it has so far). A small magnet would remedy.
*Charger does not indicate battery level
*Charger is single cell only

If you have not tried these yet, I implore you to give them a shot. They are really cheap, <6$ each and ~9$ for the charger. They literally add 100% functionality to any mod out there.

 

[eddie201011]

I got two on the was as well as a charger. Thanks for the review. Now I wish I have gotten 4 batteries instead of two. Thanks

Eddie in Louisiana

 

[Cool_Breeze]

Is is possible to provide a bit more identification for the batteries spoke of above?

 

[six]

Is is possible to provide a bit more identification for the batteries spoke of above?

These are the ones being discussed.

 

[Cool_Breeze]

These are the ones being discussed.

...thanks!

 

[Bucktoothzombie]

Yeah love this battery as well.. Even with the flat top it fit into my roughstack just fine and it works like a champ. Only real down fall is the charger, But it charges so that's really all that matters in the long run

 

[dale1962]

Speaking of the charger to these 4.8 ni-mh batts I see in description on site is says they stay red and takes about 5-6 hours before they are charged....so I quess they never turn green when charged?I usally don't run these batts all the way down before I charge them so should I still charge for the 5-6 hours to make sure they are fully charged?

 

[six]

so I quess they never turn green when charged?I usally don't run these batts all the way down before I charge them so should I still charge for the 5-6 hours to make sure they are fully charged?

It will never turn green.

The volt meter madvapes sells for 15 bucks is a handy tool to have around if you don't have a multimeter.

 

[dale1962]

It will never turn green.

The volt meter madvapes sells for 15 bucks is a handy tool to have around if you don't have a multimeter.

I have one of them got all these toy's and completely forgot about it,stupid me been using it on VV only I'll slap it on my Maxi RS and check out the voltage.Six can you harm these batts by over charging?

 

[six]

Six can you harm these batts by over charging?

Well, yes. But these are really unlikely to have a violent failure. The specs I've read and what the flashlight and RC forum guys say about ni-mh batts indicates that each cell is individually vented. If the vent opens, the cell is disabled. in the event of a venting, all that happens is a tiny amount of hydrogen comes out. There shouldn't be any sort of a flame out or explosion like a li-on can have.

What I've read also leads me to think that they can handle way more heat than a li-on battery without having a failure.

Personally, I don't plan to test those ideas. I believe in awareness and using caution when it comes to charging any battery.

I now own three ni-mh chargers, two of which never stop charging until the battery is removed. The third stops charging long before the battery is charged but sort of "trickle charges" them after the light turns green. That one takes anywhere from 6 to 12 hours to get one of these batts to 5.7v. The other two (one is from madvapes) have a completely dead batt fully charged in about 5 hours.

I do not think leaving any battery on a charger unattended is a good idea. Even though the ni-mh batts are very, very low risk, I still respect the small possibility that something bad could happen. The same goes for lifep0, li-on, and IMR.

 

[debook]

So does the charger stop charging them when they are at full charge even thought the light doesn't turn green? Is there a risk of overcharge?

 

[six]

So does the charger stop charging them when they are at full charge even thought the light doesn't turn green? Is there a risk of overcharge?

Take them off the charger within 6 hours. It does not stop feeding them electricity even though they won't take any more after about 5.7v. -- To be clear about this, though: I forgot one on the charger a few weeks ago. It was on for about 18 hours. the battery is fine. It was fairly warm when I took it off the charger, but it didn't seem to have suffered any ill effects. The battery was 5.77v after 18 hours. I've had them come off after 5 hours at pretty close to that.

I don't think a 6.0v power source can get these to the point that they will have a failure during the charge cycle, but I don't plan to test that theory.

I've suggested this in a few threads on ECF before, and I'm going to suggest it here: If you have an old computer laying around, pull out the power supply and motherboard. Lay it on its side. Put a surge protector in the case and run the cord out the power supply hole. Plug in your chargers, put your batteries on them, and close the door. That is now a nice safe place to charge batteries.

I've seen some battery failures (due to my line of work, I've seen more than my share - most people will never see it happen in their entire life - I've seen several). The worst one was an 18v battery for a very expensive and very popular brand of drill. The resulting fire required a fire extinguisher. Though the likelihood you will ever see a battery failure like that is probably about a zillion to one, I think it's way better to be safe than sorry.