Very Hot Balancer Charger

 
#1

I did a search on charger and looks like no one else is having this problem.

I got six assembled and briefly test all is great.

So I thought I would check out the charger. (Balancer Charger S3b01, that comes with six).

I plugged in like tutorial says, Red light comes on.
I plugged the cable from battery to 2cells plug and green light come on.

After a few minutes the Balancer Charger was VERY HOT. So hot I could not touch it.

Pulled the wall plug, let it COOL to touch and disconnected from six.

Is this normal? to get so hot?

J

p.s. per EZ-Builder battery 8.15 v.

*stress* *stress* *stress* *stress*


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#2

It should get hot, if it doesn't get hot it isn't doing anything.

How hot is very hot though? I can touch mine but wouldn't want to hold it for long, it's not overly hot but it's certainly classed as hot.

Does it get hot at all if it's not connected to the battery?

#3

@Rich

I was afraid it would start a fire, put it on a tile, and let it charge the battery or turn off.

It was just got very hot to touch.

my imax b6ac charger gets hot but not this hot.

So I pulled the plug and asked the question.

j

#4

mine gets very hot to,but they cool off also rapidly.

#5

Most chargers have a fan and heat sinks to keep them cool. These chargers don't appear to have either. I would elevate one side of it to keep it from laying flat on the table and put a small desk fan blowing over it. I bet that will make a big difference.

#6

Since I have a second unit, I am testing that one. So far it has not got as HOT even after 1/2 hour plugged in to power and charging battery pack. It even finished charging correctly.

I will monitor the other one.

Thanks everyone for your responses.

J

Grin

#7

These particular chargers use the metal external shell of the body as a heat sync which is why they get quite hot. We've tested hundreds at the office, some get a little hotter than others but we have never had an issue with burning or fires. We have plastic shelving that we charge batteries on as well as a wood desk.

#8

@alan

thanks for your answer. I will monitor this one.

j

#9

Thanks for your info on the charger @Alan
I've also been a bit concerned about mine getting hot.
Metal heatsink case makes sense - the heat has to go somewhere!
It does a great job charging all of my batteries

#10

There is a Lesson in the learn page about how to charge the battery. There is a footnote about the battery charger getting hot in the battery charging lesson. That's quite normal in the r/c world, etc. because those little batteries take a lot of juice Grin