I only mtl-still a year?

[Zutankhamun]

I mtl vape and I've noticed my batts are 1yr & 1month old. They drop to 4.16 after 4/5 days of the charge.
Seem fine. Should I replace them now, or keep using them.

I know the suggestions and unwritten rules but I'd appreciate your own opinions.

Thanks

 

[Shawn Hoefer]

Cells are good for charging cycles, not days, months, or years. Depending on the cell and the usage, I've seen between 100 and 300 cycles. If you're only charging once every 4/5 days, your cells should last between 400 and 1500 days... again, depending on usage and cell spec.

Long way around if saying you're good...

Sent from my SAMSUNG-SM-N910A using Tapatalk

 

[Cf11]

They drop from 4.2 to 4.16 in 5 days?
I'd say the batteries are excellent... I might be wrong but i have 2 month old batteries and they drop faster than your 1 year old cells.
I'd say keep using them if there is no physical damage to the cells or the wrapping. If there is any physical damage then please replace them asap.

 

[Zutankhamun]

They drop from 4.2 to 4.16 in 5 days?
I'd say the batteries are excellent... I might be wrong but i have 2 month old batteries and they drop faster than your 1 year old cells.
I'd say keep using them if there is no physical damage to the cells or the wrapping. If there is any physical damage then please replace them asap.

Ok. Maybe it's 3/4 days. I never paid much attention but bearing in mind I have 10 650s I'd imagine that's close to the mark.

Ok. Because realistically I couldn't keep track of charges can I ask what is a noticeable drop to look for?

Edit; I've put new skins on my batteries various times. All in good condition though.

 

[Cf11]

Ok. Maybe it's 3/4 days. I never paid much attention but bearing in mind I have 10 650s I'd imagine that's close to the mark.

Ok. Because realistically I couldn't keep track of charges can I ask what is a noticeable drop to look for?

Edit; I've put new skins on my batteries various times. All in good condition though.

Okay I'm no battery expert... But I'd say a drop from 4.2 to 4.16 in 4 days for 1year old batteries is completely acceptable.

Let a few others who are more knowledgeable about batteries chime in...
(Maybe @Mooch can clear this out if he sees this post.)

 

[Rossum]

Cells are good for charging cycles, not days, months, or years.

Li-in cells do degrade some with age, even if they're not cycled.

 

[Rossum]

I mtl vape and I've noticed my batts are 1yr & 1month old. They drop to 4.16 after 4/5 days of the charge.
Seem fine. Should I replace them now, or keep using them.

I would keep using them as long as they provide adequate vaping performance. I have some VTC5s that are 3 years old that I'm still using -- also MTL, at 20-ish watts, so I'm not pushing them hard at all.

 

[Mooch]

I mtl vape and I've noticed my batts are 1yr & 1month old. They drop to 4.16 after 4/5 days of the charge.
Seem fine. Should I replace them now, or keep using them.

I know the suggestions and unwritten rules but I'd appreciate your own opinions.

Thanks

That's perfectly normal.

Batteries age from use and from just sitting around ("calendar aging"). One year isn't very long at all for batteries that aren't being abused though. You don't have to replace them until their performance drop is too frustrating to deal with, they start getting hot even though your power levels haven't gone up, or they are just getting too beat up or dented.

 

[Zutankhamun]

Thanks everyone

 

[Barkuti]

One of the contributing factors to battery degradation is voltage or state of charge level: How to Prolong Lithium-based Batteries - Battery University

Having reviewed a lot of modern low rate li-ion discharge curves I can confidently say cells hold up more energy than the ≈60% (capacity) mentioned in the article, more like ⅔ or even a little more, at the specified 14/15th voltage thresold (3.92V for 4.2Vmax chemistries) believed to remove all stresses of this kind. Do you ever wondered why cells are distributed with voltages well below 4 volts? Hint, hint…
My advice is to let unused cells “sleep” at comfortable voltage levels, and fully charge them only if needed and preferably just before usage. This results in longer lifespan.

 

[Rossum]

My advice is to let unused cells “sleep” at comfortable voltage levels, and fully charge them only if needed and preferably just before usage. This results in longer lifespan.

Absolutely. Cells that are not currently "in service" should be stored at around 3.7V, perhaps even a bit less.

But it's tough with cells that are in active service ("rotation"). When I remove a cell from a mod, it goes straight into a charger, so that I always have a small stash of fully charged cells ready to use. When I want a fresh cell for a particular mod, I want it right now; I do not want to have to wait a couple of hours for a cell to charge. That means the cells that I have in active service (generally no more than 6) do spend most of their time fully charged.

 

[Zutankhamun]

Absolutely. Cells that are not currently "in service" should be stored at around 3.7V, perhaps even a bit less.

But it's tough with cells that are in active service ("rotation"). When I remove a cell from a mod, it goes straight into a charger, so that I always have a small stash of fully charged cells ready to use. When I want a fresh cell for a particular mod, I want it right now; I do not want to have to wait a couple of hours for a cell to charge. That means the cells that I have in active service (generally no more than 6) do spend most of their time fully charged.

No, I'm different I have 10 xx650s, 3 500s and 3 350s. I use them one after another and when I'm down to 1 or 2 batteries (depending on size) I proceed to charge every battery one after the other on the d4.
I have heard that that is safe to do.

I personally don't like to charge batts straight after vaping or discharge straight after charging.

just a convo I had early on when there was a discussion about resting batteries. Some disagreements but I've just stuck to that method, easier for me that way.

I never leave my charger unattended and so it's easier when having a day indoors (Sunday generally) to just keep rotating charging batteries.

 

[Rossum]

I personally don't like to charge batts straight after vaping or discharge straight after charging.

My sense is that it makes no difference at all provided you're not charging or discharging them hard enough to get them hot, which I do not. I vape 20 amp batteries at 20-ish watts, and unless I'm in a hurry (which is pretty rare), I charge 'em at 500 mA. So my batteries have a low-stress, laid-back lifestyle.

 

[Zutankhamun]

My sense is that it makes no difference at all provided you're not charging or discharging them hard enough to get them hot, which I do not. I vape 20 amp batteries at 20-ish watts, and unless I'm in a hurry (which is pretty rare), I charge 'em at 500 mA. So my batteries have a low-stress, laid-back lifestyle.

That sounds good
I vape @ lower wattage than you but I think anything after room temp after charge is safe. It's just something I got into and works for me.

I personally use the d4 and I think it works 750,375,300 & 150 mA depending on the amount of batteries.

 

[2GLR]

Good for you. I wish I could that kind of battery life.