I have a 1998 suz dt150 that i moved from one boat to another. when i tried to start it the other day it started cranking over as usual then it acted like the batts started to die. they are 2 brand new wally world everstart maxx marine batts 845 cranking amps. i took batts out and put them on a charger, they said 90% so i charged em to 100% and hooked em up and same thing. i took the leads off of switch and hooked them directly to batt and still the same thing. all connections are clean. im lost. thank you for the help.