36v LiFePO4 bad for 2x 34v 8S Turnigy 200a ESCs?

[mjp8081]

So I have a 36v 20aH LiFePO4 battery and 2x Turnigy Trackstar 8S 34v 200a ESCs...will the extra few volts kill these ESCs from your guys' experience or do you think they can handle it?

Thanks

 

[mrfixfix]

Well the fully charged lifepo4 will be right about 41.8 volts, so almost 8 volts over. My board was origionally lifepo4 36 volt powered, and i run it on 12s lipo. So my controller was rated for the 41.8 volts and fully charged 12s lipo is about 50 volts, so i am 8 volts over also. I havent had any problems, controller still stays cool but only pulls about 35 amps. Only a couple hundred miles on this setup so far. Time for the experts to chime in. I recall they check the voltage rating on the caps on the esc's. Another concern is that the 20ah 36 volt lifepo is only good for around 40 amps continuous and each speed controller may only be able to be fed 20 amps. So you wont be pushing much power through them. Hope that is enough for your setup.

 

[dnmun]

full charge for 12S lifepo4 is more like 44V. if the mosfets are rated to 45V and the input caps are rated to 50V then it would be worth a try. but check to see if there is some way to manage the voltage drop to the voltage regulator. may not matter since the voltage is already low but look at the circuit. see what the power resistor is on the input.

 

[mjp8081]

I can see the capacitors on either side of this ESC are pretty clearly labeled 35v.