The complaint was that starter cranking was slow and anemic. Must be the battery, right? Nope. The main negative lead to the battery was found to be corroded and of the wrong internal diameter, not allowing good contact with the battery. The wrong size hole on the battery cable really reduces the contact area on the battery stud, severely limiting amperage, and in some cases will eventually cause enough heat to burn through the connector.
In Case You Missed It
Missing ELT Batteries
Many aircraft owners don’t realize that some ELT control panels and audio alerters have...
Keeping It Simple and Affordable
The freedom to roll your own electrical system means you can make things very simple or very complex as desired.