Power module for use with low current drain

I have a mini pixhawk equipped model that draws less than 3 amps when cruising. The typical power module does not measure this low current accurately no matter how I calibrate it. Maximum draw is less than 13amps.

Are there any power modules around that can measure low drains like this with some consistency and a better degree if accuracy?

The 50A version will probably suit you the best. It’s a hall instead of a shunt I believe, and it works much better at low currents. I don’t know of any smaller ones commercially available though.

This is available as well:

Thanks guys. Was just coming back to say I’ve found the Mauch one, and even better I can get it from the guys I just got my Li-Ion packs from.