# 4-in-1 mini ESC max ratings

Source: https://forum.modalai.com/topic/3875/4-in-1-mini-esc-max-ratings
Category: ESCs, Sensors and Accessories (https://forum.modalai.com/category/15/escs-sensors-and-accessories)
Tags: esc
Posted: 2024-10-19 10:58:23 UTC by Morten Nissov
Replies: 2 · Views: 711

## Morten Nissov · 2024-10-19 10:58:23 UTC

Hi,

I see [here](https://docs.modalai.com/voxl-escs/) that the voxl 4-in-1 mini ESC is rated for 2-4s (i.e. up to 16.8V at max charge). Maybe this is a stupid question, but is it possible to run LiHV 4s batteries with this ESC? The max voltage would then be 4.35*4 = 17.4.

I realize this is above the rated specs, but I was curious if the difference was small enough that it was still within tolerable margins?

Thanks

## Reply by Alex Kushleyev (ModalAI staff) · 2024-10-21 19:09:11 UTC

@Morten-Nissov ,

Yes, using 4S LiHV (17.4V) on the mini ESC (M0129) is totally fine - the ESC components on the ESC are rated for at least 20V. The TVS protection diode will start clamping / conducting around 19-20V, depending on temperature, etc, which means if you exceed this voltage, the TVS diode will burn out - this is the first thing that will happen during a sustained over-voltage condition.

Alex

## Reply by Morten Nissov · 2024-10-27 19:26:46 UTC (in reply to Alex Kushleyev)

@Alex-Kushleyev Sorry for the delay, didn't notice the alert. But great, thanks!