Can you put a 600a controller on a 72v 50ah battery?

[FFBENI]

hello.
Im upgrading my bronco extreme 11 by changing the motors to a 2x qs 260 10000w motor: 12 inch Hub Motor 260 10000W V4 60H Electric Scooter Motor and 2 fardriver ND721800 600a controllers: ND721800 | far-driver

so my question is. Is it actually possible? i dont know if my 72v 50ah battery will be able to to support the motors and controllers. the contollers heat sings will be mounted on the outside for cooling. i mwanna hear you calculations and opinion

kind regards.

Beni.

 

[AdR]

Short answer....Yes.
Long answer. Unless your battery and BMS is rated for 24 times it 50ah spec, will you blow up your battery trying to power your setup(If battery is not fuse/BMS protected)..........Quiet possibly YES.
600a/50ah=12x2 controllers is 24 times the ah of the your battery.

 

[dominik h]

The xx1800 series can draw up to 800A from the battery.
With a normal 50Ah battery you won´t get what you want, even if you restcrict each controller to 200A you wil l have a big voltage drop under load. With your small battery you won´t need to put the heatsinks outside. I use a 721800 in my 190kg scooter with a 100Ah battery which can give me up to 800A.
Voltage drop at 400A is already over 5V at normal temperatures, when it is cold outside it gets even worse.

 

[j bjork]

It depends on the battery. It is unusual with batteries that deliver over 10c (more than 10 times the capacity), so if you dont know you are more likely to have a battery that deliver significantly less. 10c in your case would be 500A. It is more likely to be in the 3-5c range.

 

[DogDipstick]

This cell would do it easily with 25ah , let alone 50ah.

This is a Chevrolet Volt cell. 2019. 25ah, 3.7V. They come in 14, 15, 15.5, and 25ah in the car. they are readily 15C contin +.. and peak over 100C. .....

10C is easy for a cell such as this.

I have a friend who runs 70kW on a 60ah 4p pack of this cell. works good, going on three years. ( 900A, battery 1800A phase, FARr Driver).

I dont know how much power you will draw with two motor.... I have another friend with the QS268 and the thing is brutal power.