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Serial connections with different "C"


#1

I just bought some lipos from the Hk sale and will use a 20C battery with a 40C battery in series for 8S.

Will there be any differences from using just two 20C packs in series?


#2

Don’t mix different batteries.


#3

Lipos can be very dangerous.
They can explode into flames.
They are easily ruined.
Always keep that in mind.
I ruined 2 perfectly good 6s 5000mah 25c packs just by running them down too low one time!
When running 2 Lipo packs in series, they really should be same mah and same c rating.
Otherwise, they probably won’t discharge evenly and that could cause problems.
They can be different cell count though.
I.e. 5s and 3s for 8s


#4

@TF22 This is why I wouldn’t use this combination. If you must, at least keep a low voltage alarm on each battery while you’re riding and stop if you hit a threshold. But “don’t mix C ratings” is my advice.


#5

After looking at this post and some rcgroup threads, I see that you shouldnt mix “C” but you can mix Mah with a voltage alarm. please correct me if Im wrong


#6

Yes but what would be the use? If one set is done…then the whole ride is done.

Pay up…get matching batteries

Why take a chance


#7

Different C rating = different cell specs = different internal resistance = different discharge characteristics = don’t combine.