Is 11.1v 2200mah 25c lipo battery sufficient for rotate 2 12v motors?
Sensors and modules in my robot:
I have a 11.1v 3300mah 20c lipo battery too.. If I connect two batteries in parallel can I get insufficient current to my robot to be active about 30 minutes or more
You need to post a link to the datasheet for the motors.
Also you need to say how long you expect the battery to power the motors.
...R
You also need to estimate the load on the motors, or better, the expected average current draw by the motors, which depends on the load.
The symbol for volt is V, not v, the symbol for ampere is A, not a, and the capacity symbol is normally C,
not c, which is the speed of light!
11.1V, 2200mAh (or much better, 2.2Ah), 25C
Incidentally the C symbol for capacity clashes badly with C for coulomb, the unit of electric charge.
If you realize what 25C means, you'll know that the battery is rated for a maximum of 2.2 x 25 = 55 amps
Also you'll realize that these are "marketing" amps, and not to be relied upon - certainly the lifetime of
batteries is vastly reduced if pushed right to the limit. Expect something like 20A to be available from that
battery without too much fuss.
Connecting two non-identical LiPo's in parallel is an absolute no-no, do not do this! Identical cells only in a set.
MarkT:
Connecting two non-identical LiPo's in parallel is an absolute no-no, do not do this! Identical cells only in a set.
Identical batteries is ideal and makes things easier to understand. But connecting two Lipos with the same number of cells but different capacities or C-ratings is entirely normal in the RC world and I've never known anyone to have any problems. I had a plane that regularly ran with a 3S 2200mA and 3S 1000mAh in parallel because I needed weight to balance it and I'd rather have more battery than adding lumps of lead. Never a problem. What do you think should have happened?
OTOH non-identical Lipo cells connected in series is a very bad idea.
Steve