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  Using GUEST Charge Pro to Charge Gelled Electrolyte Battery

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Author Topic:   Using GUEST Charge Pro to Charge Gelled Electrolyte Battery
capngeno posted 02-23-2009 05:31 PM ET (US)   Profile for capngeno   Send Email to capngeno  
I just purchased a boat that has a Guest Charge Pro Model 2611 with a date code of August 19, 1999. I know this is a 10 amp charger, and is currently charging two 12-volt batteries for a trolling motor. The batteries have gone beyond their reliable life, and I want to replace the current wet cells with gels. Will gels be ok? I know that in larger chargers, it does make a difference as they have a different maximum charging voltage than wet cells. Thanks for any help or advice. You look like a group of very knowledgeable boaters.
jimh posted 02-28-2009 09:55 AM ET (US)     Profile for jimh  Send Email to jimh     
[This article has been separated from another, much older discussion, and moved to SMALL BOAT ELECTRICAL.]
jimh posted 02-28-2009 10:00 AM ET (US)     Profile for jimh  Send Email to jimh     
The compatibility of a charger for a particular battery is generally a matter of the maximum voltage which will be applied during charging. Lead-acid batteries with gelled electrolyte may benefit from a different charging voltage than conventional flooded cell lead-acid batteries.

I suggest contacting the manufacturer of the charger to discover if their product permits any adjustment in the output voltage to optimize it for use with gelled electrolyte batteries.

jimh posted 02-28-2009 10:06 AM ET (US)     Profile for jimh  Send Email to jimh     
By the way, GUEST is now a division of MARINCO. They have literature available on-line about their products, including this:

Dan posted 02-28-2009 06:09 PM ET (US)     Profile for Dan  Send Email to Dan     
Cap, the boat I recently purchased had an older model battery charger too. I sold it on eBay and used the money to help offset the cost of the new model Guest chargers. The new technology offers a great deal, including the ability to charge different types of batteries like gel and lead-acid. There's a user setting for each. Also, the new Guest chargers are very compact.

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