Li-po charger

Community General Discussion
1

Is there any diy schematics and code for an li-po charger with arduino ?
All diy chargers i found was only for low current (<1amph) and only charge for 3.6/.7 volts per cell so didn't had the option to charge in serial.

PS: I know about all risk of handling with li-po and that it is better to always balance charge them etc .....

Thanks in advance, jecs

2

No code, the charger chips take care of monitoring the levels and controlling the charge rate.
Check out www.maxim-ic.com, they have a ton of battery charge control chips.

3

But instead of using a chip, is it possible to use arduino to control it ?
Btw i apreciate your answer but i couldn't find any info on the website it is kinda confusing.

4 
is it possible to use arduino to control it ?

You said you were concerned about risks; I'd suggest No.

Look at the chips that can charge 2,3,4 cells, such as

5

I didn't said i was concerned, i said that i knew the risks xD, so that u didn't have to make the list about the risks that people that know about the subject do to newbie pll in the sector hehe.

If after i said this you want to give some words about doing with arduino, be free to do it xD

and now i have few questions about this chip that you talked:

there says that i can charge 2s, 3s, 4s, batteries ... can i balance charge them too ?
there it says 4 amps or more, what's the recomended max amps ?
I saw the circuit picture, what are the values of the components and if possible the recommended components ?
The chip regulates the voltage by itself (i just have to put higher voltage that what the bettery needs being 28 volts) right ?
how does the chip recognizes the batteries (2s, 3s, 4s, and the c rating/amph) ?

Thanks for ur patience with me xD

6

What I am saying is you cannot control it with arduino.
As to using the different chips, you need to read the various data sheets to see what values are used, whether they do balancing, etc. Many have a more detailed circuit and also have suggested part numbers, especially for inductors. I will only say that I am aware of the devices, but have not used them; only the MAX1811 for a single cell.