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Burk's picture

 What are the pro's and con's of sealed batteries to maintainable (non-sealed) batteries?  Price seems to be comparable...


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bob.pasch's picture

Well Burke, here's Basic Battery 101. Wet Cell (flooded), Gel Cell, and Absorbed Glass Mat (AGM) are various versions of the lead acid battery. The wet cell comes in 2 styles; serviceable, and maintenance free. Both are filled with electrolyte and I prefer one that I can add water to and check the specific gravity of the electrolyte with a hydrometer.

The Gel-Cell and the AGM batteries are specialty batteries that typically cost twice as much as a premium wet cell. However they store very well and do not tend to sulfate as easily as wet cell. There is no chance of a hydrogen gas explosion or corrosion using these batteries.

Most Gel-Cell and some AGM batteries require a special charging rate. I personally feel that careful consideration should be given to the AGM battery technology for each installation. If you don't use or operate your aircraft regularly, which can lead to premature battery failure, or depend on top-notch battery performance then spend the extra money. Gel-Cell batteries still are being sold but the AGM batteries are replacing them in many cases.

In any case, 1-make sure the battery you choose is authorized for use in your model aircraft. 2-READ THE INSTRUCTIONS! All batteries come with servicing instructions both initial and ICAs. As long as you maintain the battery I/A/W the manufacturer's instructions you'll get the maximum service life. Hope this helps...

bob.pasch's picture

Hmmm? Just wondering why I got an email alert today [09/02/13] for a post 5 weeks old Bob?

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