Advice on controller for QS205 needed, Votol? Battery Calcs right?

beyondr9k

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Apr 25, 2021
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Just bought 140x Molicel P42a 21700 batteries lol (30A cts(?), 45A max) for a 21s6p config
& a QS205 50H V3TI (said 5kw but I think they're exactly the same as the ones listed as 3kw right?)
and still unsure on what motor controller to go for...

Am I correct in calculating the following?:
6parallel * 30A (cell rated cts discharge) = 180bA (battery amps / required controller rating)
6parallel * 45A (cell rated max discharge) = 270pA (phase amps / peak amps controller can handle)

In this case, would you recommend the Votol EM150 (120A cts, 200A peak) or the EM200 (200A cts, 550A peak)?
or should I just go for the Sabvoton 72150 (150A cts, 450A peak)?

Or are there any other controllers like the Kelly models recommended? My understanding so far has been Votol>Sabvoton>Kelly based on loose ES searches but not too sure on how true this is..
Also would prefer to spend <$700AUD on a controller, nucular is out of the question anyway because of the 6+ months wait

Thanks mateys!
 
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