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Old 05 February 2007, 13:00   #11
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Originally Posted by Aidan View Post
There are a few batteries that use a GEL Acid type and do not spill.
You neglected to mention that gel cells require a specialized charger to maintain their condition. "Normal" chargers will cook them pretty quickly.

jky
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Old 26 February 2007, 17:53   #12
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Quote:
Originally Posted by jyasaki View Post
You neglected to mention that gel cells require a specialized charger to maintain their condition. "Normal" chargers will cook them pretty quickly.

jky
Hi Jky, didnt know that thank you. Never had the extra money to buy one (at least I dint have then and I am only getting back to boats now that my Lads are old enought to enjoy boating.
Do you know why, I dont but it will not take long to find out, unless you happen to know.
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Old 27 February 2007, 10:36   #13
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not acording to barden batterys the supplier and the warranty giver they dont , in his words bull when this question was asked a couple of years ago
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Old 27 February 2007, 11:53   #14
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I'd assume they're in the business of selling batteries, since just about everything I read says otherwise:

http://www.oksolar.com/battery/gel.html

http://www.vonwentzel.net/Battery/01.Type/index.html

From http://www.batterystuff.com/tutorial_battery.html#3 :
"GEL: The gel cell is similar to the AGM style because the electrolyte is suspended, but different because technically the AGM battery is still considered to be a wet cell. The electrolyte in a GEL cell has a silica additive that causes it to set up or stiffen. The recharge voltages on this type of cell are lower than the other styles of lead acid battery. This is probably the most sensitive cell in terms of adverse reactions to over-voltage charging. Gel Batteries are best used in VERY DEEP cycle application and may last a bit longer in hot weather applications. If the incorrect battery charger is used on a Gel Cell battery poor performance and premature failure is certain."



In particular are the voltage requirements; that's something that's fairly easy to control in a plug-in charger (simple design parameters to limit current and voltage), not so much so when you've got an alternator supplying the charge. You could probably get a lower limited voltage regulator to keep the electrical system within the ranges specified, but then we're talking about special charging/electrical systems, which was the point of what I said earlier.

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Old 27 February 2007, 12:29   #15
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YES JUST A FEW .yet again it only matters what they say the battery manafacturer nothing else as they supply the warranty

and to reitiarate the words bull. as we have dozens of gels sat out side on normal charge . and none are ever refused on incorrect charging
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Old 27 February 2007, 12:53   #16
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