Electrical Failure on Take Off

[Dale Campbell]

I went back up to hanger on Saturday and pulled cowling. I removed battery cables and cleaned and also checked the battery. It looks like I have one cell that is weak. Battery is a little over 2 years old. I did notice it did not turn engines over that fast. I ordered a new battery. I hope that is my problem. I also checked all the diodes on firewall. They checked ok with ohm meter. Dale