Safe to leave 18650 charging overnight in nitecore intellicharger i2?

[memeticengineone]

Recently I have heard of people with ego-style batteries leaving them charging overnight and having them explode. I have one but I always supervise it when charging. I always thought my 18650s were safe in my nitecore intellicharger i2 (2014 model) if left overnight but now I have my doubts. Can I indeed trust the "smart charging" circuitry in the i2 with my personal safety?


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[somdcomputerguy]

Certainly not a good idea.

 

[BackDoc]

not good, just noticed the heat produced in both the 2 18650s and the charger in a I4 i have, did not like it , next round used one of my xtar VC4s and no heat at all...chucked the I4

 

[memeticengineone]

Please elaborate. Will the battery vent from being left on trickle charge in the charger? Am I in for a house fire if I don't take the charged 18560 out as soon as it is fully charged? I assumed that the charger would be topping up the 18560 once charged if it self discharges at all but would not over charge the battery to the point of venting. Am I wrong about this?


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[WillyZee]

Please elaborate. Will the battery vent from being left on trickle charge in the charger? Am I in for a house fire if I don't take the charged 18560 out as soon as it is fully charged? I assumed that the charger would be topping up the 18560 once charged if it self discharges at all but would not over charge the battery to the point of venting. Am I wrong about this?


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the short answer ... chargers can fail with no warning

 

[memeticengineone]

Ok so I should take it out when fully charged. Great. Will do. No need for the tedious internet eye rolling.


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[AzPlumber]

 

[Lessifer]

Ok so I should take it out when fully charged. Great. Will do. No need for the tedious internet eye rolling.


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It's not that the i2 is a bad charger, the reason for not charging overnight, and this really applies to anything(but who doesn't leave their cellphone charging overnight?) is that in the event that something fails you won't be awake to notice it.

 

[TheMike21]

You could go months without something bad happening but as it has been stated before, if does happen you will want to be awake and close to the charger

 

[Just Me]

Bad things don't usually happen, but they can and do.

I have a couple of weird stories, not about vaping, though...

This young man about the age of our older daughter came home from his night shift one morning and went to bed. Soon after, he awoke to his dog frantically barking and fidgeting. The dog led him to the kitchen where his dishwasher had caught on fire. And it hadn't even been running, but was just plugged in. Well, who unplugs a dishwasher when it isn't in use, right???

Couple of weeks ago, we went to lunch on a weekend, about 1/2 a mile from our house. We were gone less than an hour. On returning, I walked into the kitchen with water pouring out the front of the freezer door where the ice and water dispenser is. Opened the door and saw water running under the length of the icemaker. It was an ordeal of a couple of hours: turning the water off outside, pulling the fridge out, replacing the valve on the copper tubing behind the fridge that broke when we were trying to turn it off, extracting a couple of gallons of water out of the kitchen carpet, etc. It wasn't leaking when we left. Glad we didn't drive out of town for the day--our house would have been flooded.

Just sayin'...

 

[Just Me]

the short answer ... chargers can fail with no warning

Anything can fail with no warning.

 

[memeticengineone]

Bad things don't usually happen, but they can and do.

I have a couple of weird stories, not about vaping, though...

This young man about the age of our older daughter came home from his night shift one morning and went to bed. Soon after, he awoke to his dog frantically barking and fidgeting. The dog led him to the kitchen where his dishwasher had caught on fire. And it hadn't even been running, but was just plugged in. Well, who unplugs a dishwasher when it isn't in use, right???

Couple of weeks ago, we went to lunch on a weekend, about 1/2 a mile from our house. We were gone less than an hour. On returning, I walked into the kitchen with water pouring out the front of the freezer door where the ice and water dispenser is. Opened the door and saw water running under the length of the icemaker. It was an ordeal of a couple of hours: turning the water off outside, pulling the fridge out, replacing the valve on the copper tubing behind the fridge that broke when we were trying to turn it off, extracting a couple of gallons of water out of the kitchen carpet, etc. It wasn't leaking when we left. Glad we didn't drive out of town for the day--our house would have been flooded.

Just sayin'...

In countries outside the US a lot of people have switches on their outlets that turn them off, so it's likely that internationally a dishwasher would indeed be turned off when not used. Vampire power is everywhere in societies that use electrical tools. And gadgets do fail. I suppose it's a matter of hedging against the most catastrophic failures like battery explosions and dishwasher disasters.


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[Just Me]

In countries outside the US a lot of people have switches on their outlets that turn them off, so it's likely that internationally a dishwasher would indeed be turned off when not used. Vampire power is everywhere in societies that use electrical tools. And gadgets do fail. I suppose it's a matter of hedging against the most catastrophic failures like battery explosions and dishwasher disasters.


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That switch to turn off appliances would be nice, but of course we don't have those in the US. At least we don't in our house. And I wouldn't use it on my refrigerator, for obvious reasons. Still, we had a flood potential, as I mentioned above.

We all have to do what we are comfortable with. I'm a "better safe than sorry" type. I'm old.

 

[Harryinny]

Welp i have a Nitecore single battery charger and use 18650 Samsung 25R batteries in it and get no heat. I use my USB port on my computer. Have never had a problem with it on trickle over night. There is always a possibility that something could go wrong, but i would figure if the protection went out, the charger would not work. Kind of a safety feature. I might be wrong, but i thought that making it function in that way, it protected against keeping the charger in full charging mode. It is good practice to watch things, but what is the point of having all of these features in the chargers if you have to watch it 24/7? Defeats the purpose i say.

Harry

 

[memeticengineone]

Welp i have a Nitecore single battery charger and use 18650 Samsung 25R batteries in it and get no heat. I use my USB port on my computer. Have never had a problem with it on trickle over night. There is always a possibility that something could go wrong, but i would figure if the protection went out, the charger would not work. Kind of a safety feature. I might be wrong, but i thought that making it function in that way, it protected against keeping the charger in full charging mode. It is good practice to watch things, but what is the point of having all of these features in the chargers if you have to watch it 24/7? Defeats the purpose i say.

Harry

Yeah that's what I thought at first but then I realized that if the charger failed the charged 18560s would still be connected to positive and negative contacts and could potentially complete a circuit which could be bad. Like even if you turn your charger off you should probably take them out.


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[DaveP]

I'm never farther than the next room when batteries are charging. You just never know when the monitoring circuit could develop a fault and fail to sense charging complete and continue to pump power into the battery.

Failures are infrequent, but when they happen there's fumes, heat, and melted surfaces that can turn into a fire.

I've tried, but I just can't make myself leave the house with a battery charging. I just pop them out and put them in a plastic battery box and set the box on the charger to remind me to finish charging when I get back.

 

[TheMike21]

We have the advantage that these batteries don't have memory and a partial charge won't shorten their lifespan.

 

[Semiretired]

Yep, never leave a batt charging alone (safety is the only reason I can give you). I also advise everyone I know not to pop a freshly charged battery into a mod and as an extra caution I don't pop a freshly discharged batt directly into a charger. Overkill maybe, but that is why I have batts for rotational purposes...

 

[DaveP]

Yep, never leave a batt charging alone (safety is the only reason I can give you). I also advise everyone I know not to pop a freshly charged battery into a mod and as an extra caution I don't pop a freshly discharged batt directly into a charger. Overkill maybe, but that is why I have batts for rotational purposes...

That's a good reason to have at least two sets of batteries for your mod. When you put one set on the charger you can vape on the second set and let the first set rest for a while before using them.

 

[memeticengineone]

That's all well and good but I have to leave my gameboy advance SP that I got in 2004 charging because the li-ion battery is so worn out that it will die without warning even though the light displays green for full charge. All this risk of fire so that I can play pokemon blue and relive 1998 again.


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