Battery Load Test
Thread Starter
Instructor
Joined: Sep 2019
Posts: 162
Likes: 77
From: Tequesta, FL
Battery Load Test
My battery is just coming up on 4 years old. This morning is sounded a bit sluggish at start up. I have a battery load tester machine that measures the voltage but more important puts a load on the battery while a button is pressed on the device. It shows on the meter the general condition as to good, bad, weak. Is there any reason not to perform this test on the C7? I have found that it gives good insight as to the general condition of boat batteries and other vehicles I have owned over the years.
Moderator emeritus
Joined: Jun 2001
Posts: 18,599
Likes: 3,951
From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
2015 C7 of the Year Finalist
Well, you live in Florida, as do I. Heat is a killer of the battery. When my battery gave me the "sluggish" notice, it was replaced immediately.
Test it if you have the eqpt.
Elmer
Test it if you have the eqpt.
Elmer
Burning Brakes
Joined: Dec 2017
Posts: 917
Likes: 707
From: Sidney, Vancouver Island
I wouldn't put that load tester on the battery in a C7 unless it was completely disconnected from the cars electronics.
Elmer is correct,,,buy a new battery if the current one is acting up.
Elmer is correct,,,buy a new battery if the current one is acting up.
Melting Slicks
Joined: Dec 2017
Posts: 2,012
Likes: 955
From: Central Commiefornia
IMO anything beyond three years of battery life is living on borrowed time in an extreme temperature zone, and it sounds like your battery is on its last electrons.
Replacing a $200 battery is a monthly "expense" of about five bucks if no rebate is included - IMO cheap insurance against pressing the START button to no effect.
Replacing a $200 battery is a monthly "expense" of about five bucks if no rebate is included - IMO cheap insurance against pressing the START button to no effect.
Burning Brakes
Joined: Dec 2017
Posts: 917
Likes: 707
From: Sidney, Vancouver Island
Thread Starter
Instructor
Joined: Sep 2019
Posts: 162
Likes: 77
From: Tequesta, FL
New battery installed. Hardest part was maneuvering new battery down into the battery hole.
Load Test results
battery voltage open circuit on bench 12.16 vdc
load meter showed WEAK on the lower end of weak scale
under load voltage was 9.8 vdc
48 month old oem battery needed replacement. The 2017 has around 5000 miles. I choose not to use a tender. I most likely could have got more time if I used a tender.
Load Test results
battery voltage open circuit on bench 12.16 vdc
load meter showed WEAK on the lower end of weak scale
under load voltage was 9.8 vdc
48 month old oem battery needed replacement. The 2017 has around 5000 miles. I choose not to use a tender. I most likely could have got more time if I used a tender.
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