Exide Extreme Battery Performance
Submitted: Monday, Jul 23, 2012 at 21:16
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barry22
Hi,
Has any member had experience running Exide N70EXL Extreme batteries. I chose these because I believe they are a suitable hybrid (starting/deep cycle) battery for my 4x4. (one for starting, the other for Engel in the car, and caravan lighting and TV/radio). While I have never had any reason to be disappointed, I am aware that they never reach the fully charged level of 12.8V, but hold around 12.3/12.4V at rest. While there is 14V or so available with the engine running they never fully charge, even after really long runs, (and a rest over nite, before I take a reading).
I have used a few of these, and they have lasted years, so it seems that this does not matter. I would however like an explanation. Your input would be appreciated.
Thanks, Barry
Reply By: Robin Miller - Monday, Jul 23, 2012 at 21:49
Monday, Jul 23, 2012 at 21:49
Hi Barry
Thats not to far out , mines sitting at 12.4 now and its cold outside , don't know what climate your in but 12.8 is wrong as fully charged , but they can be there with a surface charge for a short while.
Also your multimeters are just not that accurate either over a temperature range when you are playing with 0.1 of a volt etc.
Your multimeter probably isn't a calibrated one so and interesting trick to do is to keep it in a warm room then go outside on a cold night and quickly do a measurement before it warms up.
Great Batteries by the way
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