Re: [Amel Yacht Owners] Explosive episode
Bill & Judy Rouse <yahoogroups@...>
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Batteries release Hydrogen gas when charging...they release a lot when overcharging. I believe the only thing that would blow the hinges off of that compartment would be Hydrogen gas. I am guessing that the release of Hydrogen gas was caused by either a short in one or more of the batteries, or a charging device overcharging. Either condition would cause the the batteries to overheat.
What was the condition of the batteries after the explosion? Were any battery cases cracked or broken?
What was the temperature of the batteries? Were some hot?
Have you inspected the vent hose and checked that it is clear to the outside?
Batteries can be bad when delivered new. I bought 12 new house batteries about 4 years ago and 2 of them never left the dock. I tested all before placing them on the boat...2 had internal shorts.
I think maybe you were recording Amps, not Amp/hour. If you were recording Amps, it seems that 1.5 is fine, however, I am guessing that if 150-175 amps poured into fully charged batteries for 30 minutes, you could boil the batteries, releasing Hydrogen...I am not sure of this, but your alternator has an output capability of at least 150 amps. I believe it is controled by a smart regulator, but maybe not on hull #14. Is there a Smart Regulator in a plastic electrical box on the aft firewall slightly above the engine height?
I apologize for giving you more questions than answers.
CW Bill Rouse
Admiral, Texas Navy
Amel School www.amelschool.com
720 Winnie St
Galveston Island, TX 77550
On Wed, Jun 14, 2017 at 6:17 PM, jmkraus@... [amelyachtowners] <amelyachtowners@...> wrote: