油機內置點火

The Align 2 in 1 ingition board is good but is expensive ~$HKD230.

I DIY a simple connection to deliver 1.5V @ 3-4A to charge the glow plug.

The power source is from a 2S 2200mAh Lipo. It supplies 5V to the BEC. One cell of the 2S lipo is step down from 4V to 1.5V through 3 diodes rated 3A, in series. Since the glow plug only fires a few seconds, efficency is not a problem at all.