[bodo-ev]

Hi SpeedRacer93,

keep in mind that IGBTs have a voltage drop (VCE) and are therefore commonly used in circuits with higher voltages. For your purpose some power MOEFETs could be the better choice.

 

[bodo-ev]

The BUK954R8-60E seems to be okay if you have enough of them. Here is another power MOSFET:

https://www.mouser.de/datasheet/2/205/DS100209(IXTK-TX600N04T2)-1110259.pdf

I'm also interested in a high power dump load. First trials I made with glow plugs, and for higher voltages (up to 400 volts) I used some 2000 W oil heaters. To test single cells I bought tester from ZKETech, but only up to 200W (5V/40A discharge current).

 

[bodo-ev]

Heating elements (pulled from an oven, washing machine, dryer...) are doubtless a good option to test a whole pack (100+ volts), but you would need a lot of them if you want to test a single cell.

I’ve hooked-up some 300Ah cells in parallel just to equalize them, but with copper rails instead of the thin wires and a sufficient voltage difference the pack should be able to sink some thousands amps.

Another thought: What about large electrodes (e.g. 1 sqm steel plates) instead of heating elements dipped into a (salt-)water tank? At power stations they usually feed them with AC, but for short time currents also DC should work. However one should take care of the hydrogen...