Go Down

Topic: Charging batteries (Read 135 times) previous topic - next topic

PROBOT135

May 24, 2019, 11:15 am Last Edit: May 24, 2019, 11:25 am by PROBOT135
hey guys i just started working with the LM2596 DC-DC step down.

I thought of using it to charge my lithium ion batteries two of them combined each 3.7v 2200mah. Is is safe to use the step down motor to charge it and will be make sure the current flows only in one direction and not the other way.  (I will need the stepdown motor to reduce the voltage of one of my charger with has a voltage output of 12V)
And I don't have a working board to charge it even though i am aware that it is very cheap, i want to charge it with the things laying around my house.

Thanks in advance.

PaulS

Quote
hey guys i just started working with the LM2596 DC-DC step down motor.
One of these "motors"? Your translator failed you badly. Those are not motors.

The art of getting good answers lies in asking good questions.

PROBOT135

One of these "motors"? Your translator failed you badly. Those are not motors.


sorry actually i didnt mean motor.....just a mistake...i am aware it is not just like for motors.....

srnet

I thought of using it to charge my lithium ion batteries two of them combined each 3.7v 2200mah. Is is safe to use the step down motor to charge it
No, definetly not safe.

Get the charging wrong and the batteries can catch fire or explode very violently. 
http://www.50dollarsat.info/
http://www.loratracker.uk/

PROBOT135

No, definetly not safe.

Get the charging wrong and the batteries can catch fire or explode very violently. 
Thanks...so is there a good way to charge it........

srnet

#5
May 24, 2019, 12:02 pm Last Edit: May 24, 2019, 12:04 pm by srnet
Thanks...so is there a good way to charge it........

Of course there is, use a charger designed for the job.


http://www.50dollarsat.info/
http://www.loratracker.uk/

slipstick

Charging lithium batteries with "things laying around my house" is a good way of burning your house down (unless you happen to have a voltage and current controlled laboratory power supply laying around AND you know how to use it).

Lithium batteries are quite safe when used correctly but can get really unpleasant when abused, like if you charge them with things that don't control the amount of energy going into them.

Steve


Robin2

You can get microchips such as the MCP73831/2 which manage Lithium battery charging.

...R
Two or three hours spent thinking and reading documentation solves most programming problems.

Go Up