It seems to me as per the description it supports my batteries
Max input voltage: 30V.
Max current sensing: 90A.
Voltage and current measurement configured for 5V ADC.
Switching regulator outputs 5.3V and 3A max.
6P molex cable plugs directly to APM/Arduflyer 2.5's 'PM' connector.
The problem could've been I connected the battery to the wrong end ...
I'm waiting for the UnmannedTech's PM to become available again ..