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-   -   1/8 scale electric battery question? (https://www.rctech.net/forum/radio-electronics/482079-1-8-scale-electric-battery-question.html)

3Q 02-14-2011 02:36 AM

1/8 scale electric battery question?
 
I'm new to 1/8 electric, my only RC experience is with shortcourse trucks! I've just ordered a HB VE8 and I was going to use the lipos from my SC truck. My question is: I want to use Two 2s lipo hard case batteries but I don't have two identical batteries, can I use a IP 3800mah 25c with an Orion 3800mah 30c in series? Or will I damage my batteries?
Thanks for your input

ALF420 02-14-2011 03:43 AM


Originally Posted by 3Q (Post 8649807)
I'm new to 1/8 electric, my only RC experience is with shortcourse trucks! I've just ordered a HB VE8 and I was going to use the lipos from my SC truck. My question is: I want to use Two 2s lipo hard case batteries but I don't have two identical batteries, can I use a IP 3800mah 25c with an Orion 3800mah 30c in series? Or will I damage my batteries?
Thanks for your input

I "MY SELF" Wold NOT mix batteries that have a different mah OR C rating.:tire:

3Q 02-14-2011 03:53 AM

I thought the same, but I thought I'd ask for advise from some more experienced people!
Thanks again!

crusey_aus 02-14-2011 04:00 AM

Can be done but it really depends what motor (amp draw) you will be using

Without knowing the age / history of the packs you risk damaging them if your not careful

Essentially connecting them in series you will be creating a 4s 3800mah pack with a discharge rating of 25c (lowest of your two packs)

If you keep an eye on them when in use you can get away with it

Cheers

Dave H 02-14-2011 04:18 AM

Probably the biggest risk is over discharging one of the packs. It's likely the real capacities are different, especially if the age and cycle history of the 2 packs are different.

At the very least be very careful with run time, and checking the voltage of the packs.

Note checking them while stopped is different than the LVC setting, which is under load. I would strongly suggest not going below 7.4V per pack at rest.

3Q 02-14-2011 04:42 AM


Originally Posted by Dave H (Post 8650007)
Probably the biggest risk is over discharging one of the packs. It's likely the real capacities are different, especially if the age and cycle history of the 2 packs are different.

At the very least be very careful with run time, and checking the voltage of the packs.

Note checking them while stopped is different than the LVC setting, which is under load. I would strongly suggest not going below 7.4V per pack at rest.

Sounds like a risk not worth taking! I might just wait until I get a hard case 4 cell!

crusey_aus 02-14-2011 05:19 AM

Not a big deal if you have your LVC set fairly high and keep an eye on them

Cheers


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