View Single Post
id10t id10t is online now
Registered
 
id10t's Avatar
 
Join Date: Mar 2003
Posts: 10,462
Quote:
Originally Posted by 1990C4S View Post
I have a car battery that I am 99% sure is bad. When I took it for testing they said 'battery is good, just needs charging'.

I suspect if you charge it they will say 'battery is 100% charged, it's fine.

I think the issue is that the new pocket testers do not load the battery. You need the old fashioned style tester that had resistors, and you could dump a crap load of energy while monitoring the voltage and current.

Project Farm did a review of testers, they did seem to work, but I prefer to see the battery do some work under load.
My trolling motor is pulling about 30amps, so fairly sure my amazon ampmeter is reading it with enough load.
__________________
“IN MY EXPERIENCE, SUSAN, WITHIN THEIR HEADS TOO MANY HUMANS SPEND A LOT OF TIME IN THE MIDDLE OF WARS THAT HAPPENED CENTURIES AGO.”
Old 08-25-2025, 06:04 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #7 (permalink)