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Old 07-07-2010, 06:01   #1
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Dedicated Electronics Battery ?

In looking at boat ads, I've seen a couple that have dedicated battery banks for just the electronics - usually a couple AGM's.....

Is this worthwhile? I could see arguments for it (especially on larger boats), getting a big 'flat-plate capacitor' near the load, and worry about recharging it later. OTOH, it's more complexity and weight...

Healer52 / Lisa, Rick and Angel the Salty Dog
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Old 07-07-2010, 06:14   #2
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Originally Posted by Healer52 View Post
I've seen a couple that have dedicated battery banks for just the electronics - usually a couple AGM's.....
Ye gods, wish I could spare the space and money for a couple of dedicated AGM batteries soley for electronics.

Nah, take the KISS (keep it simple stup*d) approach


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Old 07-07-2010, 06:46   #3
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I have a dedicated electronics battery - 8D AGM - that is mounted higher than the other batteries and charged by a wind generator as well as the battery charger. In case of flooding, I will still have power for my VHF and SSB.
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Old 07-07-2010, 20:42   #4
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Same here… My 12v battery is high up and designed to run all the electronics.

My house bank is 24v and I use a 24/12 DC convertor plus the generator alternator to keep it fully charged
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Old 08-07-2010, 04:53   #5
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My Contest is fitted from factory with dedicated battery for this purpose, presently 105 a/h deep cycle.

The zener diode was to allow main service bank to supplement this battery without reverse happening. I later added intelligent relay which achieves same result without volt drop across zener which I kept as backup.
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