Battery Connection Anti-Corrosion Gel and Other Connections Too


Radio shack. 17.95 probably 45 years ago. I got itvwhen I got tired of having to plug in the heathkit vtvm. Thought about getting a digital one 25 years ago, a really nice Fluke from the supplier we bought from at work. But this one still does everything I need.
Hey....I too have that same RS multi-meter collecting dust on my shelf.
 
Battery connection complete. I can open doors again!

Using battery tender jr but it is not as good as CTEK but its a pain to go back and install ctek. Can I cut the wire off and connect to ctek terminal? Do some electric hack job?
Battery Tender Jr is a garbage. My ctek understood in 3 min that my battery is fully charged. Tender jr stays red forever. Im returning it.
 
Maybe you have a bad connection?
 
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Mine is the 750. never had any problems. I am on my third one in 19 years. Constant use.
 
I have the 750. Never had any problem in 19 years. I am on my third one. Constant use.