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01-29-2018, 11:58 AM
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#1
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Veteran Member
City: Long Beach, CA
Vessel Name: Peterpan 111
Vessel Model: Gulfstar
Join Date: Apr 2013
Posts: 53
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Battery gases
There are two 27 type batteries in parallel at the head of my bed. They are maintainance free. They are in the cupboard but when I am sleeping they are less than a foot from my head. I have heard that this is a dangerous situation Is this true? Whats your opinion? I can turn off the charger at night. Does this make any difference?
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01-29-2018, 01:54 PM
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#2
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Valued Technical Contributor
City: Litchfield, Ct
Join Date: Aug 2012
Posts: 6,784
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Lead acid batteries can produce hydrogen if over charged. Most modern chargers will not overcharge them. Otherwise they produce very little gasses.
Sealed lead acid batteries which is what you seem to have produce almost no gasses; also AGMs produce none.
Don't worry about it.
David
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01-29-2018, 02:50 PM
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#3
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Guru
City: Cape May, NJ
Vessel Name: Irish Lady
Vessel Model: Monk 36
Join Date: Dec 2007
Posts: 4,964
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I wouldn't be worried unless you have an ignition source in there with them. Any switches, motors, or relays in there? Is the compartment vented?
Are they really sealed? Some "maintenance free" are not sealed and will emit H2 gas. Can you smell rotten eggs?
__________________
Archie
Irish Lady
1984 Monk 36 Hull #46
Currently in Cape May, NJ
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01-29-2018, 03:03 PM
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#4
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Senior Member
City: Comox
Vessel Model: 1989 Wellington 57 motorsailer
Join Date: Nov 2016
Posts: 281
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Hydrogen sulfide smells like rotten eggs, hydrogen gas (H2) is odorless.
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01-29-2018, 03:08 PM
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#5
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Guru
City: Powell River, BC
Vessel Name: Northern Spy
Vessel Model: Nordic Tug 26
Join Date: Feb 2012
Posts: 4,075
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Quote:
Originally Posted by Nightsky
Hydrogen sulfide smells like rotten eggs, hydrogen gas (H2) is odorless.
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Yup. Very important difference.
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01-29-2018, 03:38 PM
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#6
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TF Site Team
City: Jacksonville
Join Date: Nov 2008
Posts: 11,680
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Quote:
Originally Posted by Joew2604
There are two 27 type batteries in parallel at the head of my bed. They are maintainance free. They are in the cupboard but when I am sleeping they are less than a foot from my head. I have heard that this is a dangerous situation Is this true? Whats your opinion? I can turn off the charger at night. Does this make any difference?
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On our sailboat, I added 4 more Trojan T-105s under our berth by removing two drawers. I drilled 4-1” holes in the sides, that was it for ventilation. I did have trays for the batteries in case of an acid spill. We lived with the batteries full time for 9 years and never had any issues. It was easy access so we could check the batteries easily plus we had a battery monitor for the bank. If you monitor them, I agree with David and Archie, don’t wouldn’t worry about it.
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05-31-2018, 09:20 PM
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#7
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Veteran Member
City: Long Beach, CA
Vessel Name: Peterpan 111
Vessel Model: Gulfstar
Join Date: Apr 2013
Posts: 53
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Thanks
Thanks everyone. Problem solved!!! Dont know how to erase my question.
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05-31-2018, 09:52 PM
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#8
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Guru
City: Cape May, NJ
Vessel Name: Irish Lady
Vessel Model: Monk 36
Join Date: Dec 2007
Posts: 4,964
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You don’t need to. The important thing is that you close the loop so that future readers can read your problem AND fix.
So what exactly solved your problem?
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06-07-2018, 12:14 PM
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#9
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TF Site Team
City: Westerly, RI
Vessel Name: N/A
Vessel Model: 1999 Mainship 350 Trawler
Join Date: Jan 2014
Posts: 4,160
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The Thread remains so if anyone else has the same question in the future it can be searched and/or referenced.
Unless it's an anchor question.
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