ProTec Prodigy 625 - Battery IR's different on each side

[NitroBugg]

Had a question for anyone running a ProTec Prodigy 625 dual charger

I noticed the other day my 3S LiPo batteries have a different IR, depending on which side of the charger I use.

I check the battery on side (1), and it reads about 6m
I check the battery on side (2), and it reads about 22m

Doesn't seem to matter what size battery I use, or "C" rating....it seems that side (2) always shows a LOT higher IR than side (1).

Also have a Prodigy 680 single port that reads ****. Really weird...

Is this something to worry about...maybe a faulty charger(s)? Tried 3 different balance leads and does not change the outcome. Different batteries show about the same deviance from one side to the other. I've had this charger for over a year or more, so I'm sure its out of warranty by now.

So, which side is correct? Don't know which one is telling the truth. Is there a RELIABLE standalone IR device i can use to get an accurate reading?

 

[NitroBugg]

Wow...a question NO ONE can answer. Thanks.

 

[ferp420]

its probably a calibration thing but anyway since most batterys read the same i would just take the numbers you get as a base line for that side of the charger if the numbers change you know that battery has a problem it dosent matter which side is right at that point you just need to see the numbers are close to the base line to know theres a problem

 

[Joshs4x4toyz]

I agree with Ferp. Most likely a calibration issue. What Mah? My money is number 1 is correct. 22 milliohms seems pretty high in this configuration, unless you have a problem. So if its the same with all your batteries, side 2 is malfunctioning.

 

[NitroBugg]

I mainly use 5000mah batteries, but have a couple 7200's that I use for other rigs (too big for my crawlers), but all display the same symptoms. So I would have to agree with the calibration problem as the culprit, and note what readings i get each time I charge, and use that as mentioned for a baseline as to the "health" of the battery.

Appreciate the tips and the replies! "thumbsup"

 

[Joshs4x4toyz]

Good plan, and yes with a 5000 and 7600 batts the 6 milliohms side is definitely correct (or at-least closer to actual).