Hi. I'm doing a project using 16 lithium-ion batteries connected in series with 2250mah,4.2 volts rating each. my project is to display the rating of the battery bank on a LCD I know arduino can measure the 4.2 volts, but my concern is will the 2250mah which connected in series for a total of 36A affect the arduino or damage it? thank you!
Your description isn't clear.
If these batteries are connected in SERIES the capacity will not change. You will be making a 67 volt 2250mAh battery pack.
If they are connected in PARALLEL the voltage does not change then you will have a 4.2v 36Ah battery pack..
Which is it?
Series adds voltage, doesn't change capacity
Parallel adds capacity, doesn't change voltage.
Ohh.. im sorry about the wrong info.. my lithium ion batteriez are connected in parallel.. so there 36A in total. So will this affect or damage the arduino?
JacksonJoe21:
Ohh.. im sorry about the wrong info.. my lithium ion batteriez are connected in parallel.. so there 36A in total. So will this affect or damage the arduino?
Probably not if it works as you expect it to. But if you are using that many lithium cells, perhaps you are using the wrong kind of power source.
I would still use a voltage divider with a 4.2v battery to give some more voltage head room and protect the Arduino pin from spikes.
Dangerous idea.
Do some reading on connecting Lithium batteries like that: