Is my alternator dead?
#11
Going to bump this thread since im sort of having the same issue..
My s2000 became my 2nd car a few months back and now I only drive it on the weekends. Well about 2 months ago I didnt drive/start it for 3 weeks. I knew id come back to a dead battery no biggie. Jump start it drive it about 20 min on the freeway. When I arrived to my destination the car wouldn't start back up. The battery was about 2 years old so I just had it replaced.
All was well for about 2 weeks.. now the same thing again. Did a voltage check with the car at idle and it was at 14.0
Any ideas guys?
My s2000 became my 2nd car a few months back and now I only drive it on the weekends. Well about 2 months ago I didnt drive/start it for 3 weeks. I knew id come back to a dead battery no biggie. Jump start it drive it about 20 min on the freeway. When I arrived to my destination the car wouldn't start back up. The battery was about 2 years old so I just had it replaced.
All was well for about 2 weeks.. now the same thing again. Did a voltage check with the car at idle and it was at 14.0
Any ideas guys?
#13
Originally Posted by Billman250,Nov 30 2010, 05:45 PM
Sounds like a battery. Modern batteries, for whatever reson, suffer occaisional damage if drained completely.
Thanks
#15
Registered User
Join Date: Jul 2010
Location: Bellaire, Texas
Posts: 421
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Billman250,Nov 30 2010, 05:45 PM
Sounds like a battery. Modern batteries, for whatever reson, suffer occaisional damage if drained completely.
BatteryMinder is a trickle charger that is specifically designed to de-sulphate lead acid batteries. They claim to nearly double the normal life of batteries. I haven't used it long enough to know about that, but it does work well as a trickle/maintenance charger.
#19
A little update.
So i picked up a Schumacher Sc-1000A which is a charger/maintainer.
I know my battery was completely dead and this may not bring it back but I decided to give it a shot anyway. It had been on charge for about 9 hours and to my surprise the gauge read that it was 75 percent charged. Once it reaches 100 percent it should switch to maintenance mode and hopefully I dont have this issue again.
So i picked up a Schumacher Sc-1000A which is a charger/maintainer.
I know my battery was completely dead and this may not bring it back but I decided to give it a shot anyway. It had been on charge for about 9 hours and to my surprise the gauge read that it was 75 percent charged. Once it reaches 100 percent it should switch to maintenance mode and hopefully I dont have this issue again.
#20
Registered User
Join Date: Jul 2010
Location: Bellaire, Texas
Posts: 421
Likes: 0
Received 0 Likes
on
0 Posts
A long, slow charge is the best way to recover a battery. It sounds like you're on the road to recovery. Good luck.
The test of the battery is whether it keeps voltage up while being discharged. If you have the battery fully charged, engine off, headlights on, and it stays above about 12.75v for several minutes, then the battery is probably OK. If the voltage drops faster, then you might need a new battery.
The test of the battery is whether it keeps voltage up while being discharged. If you have the battery fully charged, engine off, headlights on, and it stays above about 12.75v for several minutes, then the battery is probably OK. If the voltage drops faster, then you might need a new battery.