I have no idea why my current ctek has gone bananas...I got it to charge the one car but when I tried it on two other batteries, both of which had enuf charge on them to crank the cars over, it would not act properly. Put a battery tender jr. on them and they charged fine. It has seemed flaky for awhile, tho.
I have one pos Optima left..maybe I should try the ctek on it tomorrow and see if it will work on it but none of the modes seemed to work properly on two conventional batteries but finally did on the first one after cleaning the terminals...Ge tting a really discharged Optima to start charging takes a bit of effort as you say, Dave
