6 fet 4110 limits

[Sr.Agaporni]

I got a controller from EM3EV with 6 fet 4110 (specs). I am planning to use it with a 90V (82V nominal) battery limited at 20amps with a Cycle Analyst. It should work as those are the limit specs, but, any experience with that controller at those limits? Do you think it will work without problems or will meld or something?

My second option is the same scenario with the 12 fet 4110 at 90v 30a, but I am having problems with the controller and the Cycle Analyst at the moment, so not sure if I will be able to use this one.

 

[dnmun]

if a nominal 72V battery charges to 90V then what voltage does a nominal 82V battery charge up to?

if the battery charges to 100V and the output mosfet has a limit of 100V for BVdss then how long will it last?

 

[Sr.Agaporni]

if a nominal 72V battery charges to 90V then what voltage does a nominal 82V battery charge up to?

if the battery charges to 100V and the output mosfet has a limit of 100V for BVdss then how long will it last?

Not sure about your words... Just to try to be clear, max voltage would be 90V (89,2V to be exactly). The fets are 100V, but the seller recommends 90V as the higher voltage. All seems to fit, but not sure about using a 6 fet controller at 2000w continuously.

 

[wesnewell]

It's not the voltage that will cause problems, it's the wattage (VA=W). I've been running my $35 shipped 4410 15 fet 1500W rated controller for over 3 years at 100.8V max and 40A max, but that's 5 fets per phase and most of the time I'm pulling 10A or less. Most 6 fet controllers are rated for 350W or less continuous. If you run that controller at 20A at 80V continuous (1600W) , you will burn it up in no time. As cheap as controllers are, it makes no sense to me to push their limits too much.