Mixing batteries?

[aurora83]

Can you mix lead acid and Ni-Cd batteries in a RC car, if they are rated the same?

[beso]

Batteries should alway be the same type and capacity. The differences in discharge characteristics would inevitably lead to unbalanced cells.

[buildersmate]

If you are putting them in series to get a voltage output of the two individual cells it would work, but it is not good practice.
Putting them in parallel is a no, no.
I take it you are not racing the car - Lead acid cells are heavy for the power output capability.

[fo3nix]

No.

[ianmunt]

one or the other but definitely not a mix

[aurora83]

Ok, I think slight misunderstanding, which is my fault for not explaing clearly.

When i say mixing, I don't mean combining the two batteries together. My RC car came with a lead acid battery which is now dead. I want to know if i could buy a similarly rated Ni-Cd replacement instead of a lead acid. Or will the circuitry be designed for lead acid.

The main reason for this is that the lead acid battery supplied with the car is 10V, and I can't find any 10V replacements.

[buildersmate]

You can do that. Definitely a good solution for you.

[ianmunt]

I suggested that on an earlier posting!!

[4candles]

NiMH or Li-Po would be better - here's some from a good source:

http://www.component-shop.co.uk/index.html