At last, a micro 4-in1 that can do 4S with Spedix reliability!
Please note that mounting holes are sized for M2 screws. We checked with the Spedix engineers drilled out our own boards to M3 size but you must use nylon screws. Use a regular drill bit sized 3mm or 1/8 inch. After drilling, check the holes with a magnifying lens and clear any copper scrap left around the edge that might touch a nearby chip.
Input:2-4 Cell LiPo
Mounting hole distance:20mm