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Posting a reply to: Re: Interference on Depthfinder

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[QUOTE]Jerry Newman - 10/12/2012  11:17 AM

[QUOTE]Shep - 10/12/2012  7:59 AM

[QUOTE]lookin4_big_gurls - 10/8/2012  10:47 PM

better yet get rid of cranking all together and run nothing but deep cycle in your boat![/QUOTE]

Not knowing what his main motor is, I couldn't advise that. Dual pupose is made for cranking/deep cycle apps. A pure deep cycle is not meant for cranking. The DI Optis and E-tech call for 1000 MCA, and I don't believe deep cycle batteries meet that spec.[/QUOTE]

Found this on Deep Cycle Batteries:

Deep cycle gets its name from the ability to be discharged down to 80 percent (deep cycled) repeatedly without causing damage to the battery. True deep cycle batteries have the thickest plates and are used primarily in industrial applications for backup, or for solar power plants, where extended discharge times are most important. There is no problem using a deep cycle battery for cranking a motor, but it should have an ampere hour rating at least 20 percent above what is recommended for starting that particular motor.

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Jerry Newman

Posted 10/12/2012 11:17 AM (#590405 - in reply to #590364)
Subject: Re: Interference on Depthfinder

Location: 31

Shep - 10/12/2012 7:59 AM

lookin4_big_gurls - 10/8/2012 10:47 PM

better yet get rid of cranking all together and run nothing but deep cycle in your boat!

Heck, for that matter, he could have a rope start? I have always used deep cycle for the main motor crank with no issues, probably not textbook... but I like the interchangeability and draw down reserve they offer over a crank or duel.

Found this on Deep Cycle Batteries:

Deep cycle gets its name from the ability to be discharged down to 80 percent (deep cycled) repeatedly without causing damage to the battery. True deep cycle batteries have the thickest plates and are used primarily in industrial applications for backup, or for solar power plants, where extended discharge times are most important. There is no problem using a deep cycle battery for cranking a motor, but it should have an ampere hour rating at least 20 percent above what is recommended for starting that particular motor.

Edited by Jerry Newman 10/12/2012 11:22 AM