wa8yxm wrote:
There are two (Or 3) things that can pop those twin 30 amp fuses, One is batteries installed backwards, that is why we call them "Reverse polarity" fuses.
The 2nd is very dead batteries and a converter big enough to pop them, Very unlikely and Theory has it your converter is NOT big enough
Third is a shorted CONVERTER.
Suggest upgrading to a Progressive Dynamics Intella-Power 9260
The Progressive Dynamics Intella-Power is a great unit. With the built in battery wizard it is a 4 stage charging unit that will keep your batteries from being overcharged. I highly recommend them.