Watch out for lithium batteries!

[earlfor]

overcharging is not to be taken lightly.

https://currently.att.yahoo.com/news/wisconsin-dad-issues-warning-lithium-180000246.html

[Nessism]

A guy on KZ Rider burned down his workshop, after leaving some LI batteries charging unattended. We all do this, but I've taken to unplugging things at night.

[bccap]

I had an issue with one a couple of times ..... I keep my tablet in a stand on my coffee table and it is always plugged in ..... One day I am watching TV and I hear a loud crack . The screen on the tablet was cracked and bowed out towards me ..... It had an internal explosion which caused the battery to rapidly expand .... Fortunately it was contained within itself .....This happened with two tablets.... I was told it was likely a result of them always being plugged in charging ...... My newest tablet has a feature that says ..... " Hey a$$hole. You've got me on charge all the time. So until you get your head out of your a$$ I'm going to cut charging off at 70% " .... So far it hasn't exploded ..,...

[rphillips]

Hasn't the technology been around for a long long time for chargers to turn off when batt. gets fully charged? Though I've not found a trickle charger or battery tender that completely stops.

[salty_monk]

A lot of the cheaper stuff out there doesn’t have good BMS. Done to save costs…..
in general it’s not good to leave any of them them plugged in though.

[argonsagas]

Milwaukee and other tool brands tell you to never leave their batteries on charge indefinitely.

[salty_monk]

TTI own a lot of those anyway… all the same company.

[tlg1100]

Hasn't the technology been around for a long long time for chargers to turn off when batt. gets fully charged? Though I've not found a trickle charger or battery tender that completely stops.

I thought they had it all figured out, smart batteries, smart chargers ??

[Rob S.]

I thought they had it all figured out, smart batteries, smart chargers ??

Dumb humans...

...............

[tlg1100]

Milwaukee and other tool brands tell you to never leave their batteries on charge indefinitely.

I'd better tell the guys that work in the shop, because they've been leaving them in charger all the time when not in use

[rphillips]

I'm sure different brands do different things. My 30 yr. old Makita 9.9V chargers turn off when batt. is fully charged, you got to push the button back down (to on position) to top off or restart the charger. If batt. is already full charged the button will not stay down in on position.

[earlfor]

The quickest way to reduce the lifespan of LiPo (3.7-4.2V) batteries is to leave them on charge longer than they need to be.

The path to doubling or tripling the lifespan is to always stop the charge at 80%, and never deplete them below 40% before recharging. This pretty much eliminates heat and stress on the cell. They will last nearly forever.

[Nessism]

Milwaukee and other tool brands tell you to never leave their batteries on charge indefinitely.

Actually, Miwaaukee says leaving the battery on the charger won't hurt anything. They don't recommend it per se, though.