Out of curiosiry I bought a 2 dollar charger... save yourself a dollar and buy some matches.
The curious thing is the ic chip they used, check it out lol
Looks fine to me, but I was born in Harbin.
Sometimes cheap battery chargers can be pretty hideous. For a cheap crappy charger I'd get a CC/CV charger module for 2.50 , because it might not be any more reliable than a dedicated trash charger but at least I can set my own voltage and current limit. There's even a potentiometer to adjust a charge led threshold.
Wow, that's an interesting package!
Then you wonder why they chose to invent a new package - i would guess it was cheaper to use an exsisting leadframe and molding machine for 8-pin DIP chips, but apparently something warranted making a whole new package.
// Per.
Well i bought an hair trimer (on a nom-Chinese store) with 2 lipo batteries inside and no charger controller.
And i had it hook up all night, lucky it didn't explode!
tsunamy_boy:
Well i bought an hair trimer with 2 lipo batteries and no charger controller.
And i had it hook up all night, lucky it didn't explode!
I've seen lot of systems with Lithium cells, and no charge controller.
A current regulated charge circuit is enough in many cases, if designed correctly, but not very good for battery longevity.
I have a "solar power bank" - the open-circuit voltage from the solar cell is 9 Volts, and it's sent directly trough a schottky diode and into a protected Lipo-pack. The charge current from the solar cell is low enough that nothing bad happens.
// Per.
So, for example if you charge a lipo with 3v, nothing will went wrong is that what you mean?
tsunamy_boy:
So, for example if you charge a lipo with 3v, nothing will went wrong is that what you mean?
Essentially, the current will drop down to zero, so yes, in effect, nothing happens.
It's a whole another case if you charge the cell to 4.2V and keep that voltage forever - that will trickle-charge the cell, and it's dangerous.
// Per.
Zapro:
tsunamy_boy:
So, for example if you charge a lipo with 3v, nothing will went wrong is that what you mean?Essentially, the current will drop down to zero, so yes, in effect, nothing happens.
It's a whole another case if you charge the cell to 4.2V and keep that voltage forever - that will trickle-charge the cell, and it's dangerous.
// Per.
"will drop down to zero", what do you mean? (noob question) 
cjdelphi:
Out of curiosiry I bought a 2 dollar charger... save yourself a dollar and buy some matches.The curious thing is the ic chip they used, check it out lol
Probably translates to: "Made in China."
EDIT More likely: "Copied in China."