Originally Posted by Richbam
Yeh I figured that would be the easy way to find out and then make sure you remembered.
Only trouble is my battery is flat as a pancake, so I won't know until I've got a charge back in it to find out!
If it is dead flat, you may need to connect a dedicated battery charger.
The converter's have a "shorted battery" protection circuit that will prevent it from working (charging battery) if the battery voltage is below 10.5 - 11 volts.
If your battery is "toast," the converter may not power up.
You should also have them load checked.
Many auto stores will do a load test for free.
Lou and Laura with Bella - German Short Hair Pointer
2008 GMC Sierra 2500HD Crewcab SB Allison Duramax
2010 Flagstaff 8526RLWS - Superglide 3300
HAM CALLSIGN - KC3FFW