Is it OK to leave a 18650 in wall charger after light turns green?

[wab126]

I was just wondering if you can safely leave the battery in it's charger after fully charge?

Thanks

 

[Big Tom]

I have heard you should not leave battery in charger unattended. Smart chargers should quit charging when battery reaches 4.2 volts.

 

[SleeZy]

You can, but it's not suggested to leave it more than an hour. The charging protection might fail. And some chargers do pulse charges to keep it topped off, which isn't a good thing. As it's risking overcharging it. It's best to just take it out when it's finished.
And never leave the charger unattended. And never charge while you're asleep.

 

[dripdaze]

Hi wab126! Welcome to the forum. Your charger should stop the charging after the batt. is full but it might not if it is a cheap low quality charger. Theres one way to find out.

 

[yzer]

Depends on what charger you are using. For a Trustfire TR-001, definitely not. For a Nitecore Intellicharger i-4, yes. Nonetheless, all of these Li-ion battery chargers including Pila and xtar are made in the far east and can eventually fail. I don't leave any battery charger on overnight or when I'm not near enough to put out a possible fire.

 

[certus11]

Using Nitecore Intellicharger i-4, charge at night, take all out in the morning. 3 18650 and 2 18500 in rotations

 

[wab126]

Thanks guys! Info is exactly what I was looking for. I have been leaving the charger while it was doing its job, no more!

 

[havinfun1]

Leaving them in charger after charged or charging overnight, just too much at risk with any charger. If my batteries aren't done charging before I go to bed I disconnect charger, remove batteries & continue the next day. Why take a chance ?????

 

[Asmo6]

I take mine out as soon as I can. (Notice) And don't charge overnight unless I will be getting up in just a few hours and need the battery the next day.

 

[iacchus]

It is generally a bad practice.

 

[SleeZy]

Using Nitecore Intellicharger i-4, charge at night, take all out in the morning. 3 18650 and 2 18500 in rotations

This is not a good idea, if you insist on doing it overnight. Get yourself a LIPO bag, just for extra safety.
Take care!

 

[yzer]

This is not a good idea, if you insist on doing it overnight. Get yourself a LIPO bag, just for extra safety.
Take care!

No, don't stick a nice charger like a Nitecore into a LiPo charging bag.

First off. These chargers are designed for good air circulation to cool the batteries during charging. Heat kills battery life for all Li-ion batteries. Sticking the charger into a bag will kill air cooling and retain waste heat.

Second. You shouldn't be using removable LiPo batteries in any APV or mod. These things can blow. IMRs are much safer batteries. They can vent, but with much less violence than LiPo. LiPo bags are for charging LiPo batteries used by RC hobbyists, not IMRs used by vapers.

Don't charge overnight while you are asleep. The less risk, the better.

 

[SleeZy]

No, don't stick a nice charger like a Nitecore into a LiPo charging bag.

First off. These chargers are designed for good air circulation to cool the batteries during charging. Heat kills battery life for all Li-ion batteries. Sticking the charger into a bag will kill air cooling and retain waste heat.

Second. You shouldn't be using removable LiPo batteries in any APV or mod. These things can blow. IMRs are much safer batteries. They can vent, but with much less violence than LiPo. LiPo bags are for charging LiPo batteries used by RC hobbyists, not IMRs used by vapers.

Don't charge overnight while you are asleep. The less risk, the better.

Yes i know this. And i never suggested him to use lipo batteries O_O I would never do that.
And yes the nitecore can get up to 60c degrees.
I've seen alot of people suggesting lipo bags for extra safety, however that might be wrong then. I just wanted to pass on what i've been learning.
And if you read my first post i suggested him not to charge over night. I wouldn't do it, why risk that?