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Old 04-03-2010, 12:51 PM
Ron Stygar's Avatar
Ron Stygar Ron Stygar is offline
19,585 Miles
Location: CT
Join Date: Mar 2002
Posts: 11,141
Mein Auto: Z4 M Coupe 6LL93033
CTEK Recondition

Originally Posted by dwm View Post
When I had a stock battery, I also found that float charging with the Battery Tender appeared to be contributing to water loss when I left it connected for a whole winter. I assume the pulse-mode maintenance of the CTEK (after 10 days of float) is better on that front, but I am not sure since I haven't had a wet battery in the roadster in quite some time.

The Odyssey batteries seem to like the 'snowflake' mode, and I suspect that's true of the BMW AGM batteries also.
On one of my tractors, I left the lights on and it killed the battery a couple of weeks ago.
Regular charger didn't do anything and I ended up with jumpers.
I was going to pick up a battery Monday.
Yesterday I tried the CTEK charging and recondition.
Tried it this afternoon and it started right up. Hard to believe.

Last edited by Ron Stygar; 04-30-2011 at 03:31 PM.
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