Hi, I have a Blue Smart 12/17 and 12/5 charger. I'm trying to charge a 12v li 84 ah battery. Using the 12/5 charger appears to work fine. However I can't get the 12/17 charger to draw any current. I'm measuring the voltage at the battery with a multimeter and voltage reading does not change when I switch on charger. I've measured the voltage from charger on +ve wire when disocnnected from battery and reads higher voltage but when I connect to terminal it drops to battery voltage. App say charging Absorption at 14.2v / current 0A. I've tried 12/17 charger on lead acid battery and the same problem occurs. I'm switching within app between standard default charges for Li and lead acid. I think the 12/17 charger is problably faulty? Any insight into what the problem may be would be appreciated!