Battery question
Thread Starter
Drifting
Joined: May 2002
Posts: 1,546
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From: Back in Nebraska
Battery question
Maybe a stupid question, but when I was younger I was told that while charging a lead acid battery it would put off gases while charging. Now I understand that battery technology has advanced but is this still true? I have a battery tender attached to the car and want to put the cover on it as well. Will the cover trap any gases under the cover and harm the paint or any other components?
Le Mans Master
Joined: May 1999
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From: Windermere FL
The C7 battery actually has a small hose connected to it that moves whatever gases are generated outside. Well, unless you changed the battery and did not hook up that original little hose.
Drifting
Joined: Nov 2005
Posts: 1,668
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The following is from Gerald Uttrachi, a fantastic writer of how-too articles for the C7. Sadly he has moved on ....to the C8
http://netwelding.com/Battery_Issues.pdf
i learned from my c6 that if you keep a trickle, even with microprocessor monitoring, battery tender constantly on for 7 years, you will gas out all the water, ruining the battery. DO slice the label covers over the "caps" and remove them periodically to check to see water is still over the plates.
AGM batteries do vent! Quoting from a marine source- they should know: “Even though AGM batteries are normally sealed, they do have a venting system integrated into the case top. In the event of an overcharge condition, it is possible for pressure to build up inside the battery and then release after a 2 or 3 psi accumulation. If it occurs, hydrogen gas will vent and it is quite explosive.” The Diehard comes with holes on both sides of the battery top. The ( C7) OEM battery has a hose that exits out the bottom of the car. The 90-degree plastic hose fitting on the OEM battery fit the Diehard as did the OEM plug that fit the other hole on the Diehard. The 90-degree angle elbow fitting was placed on the hose that comes from the C7 battery well floor. It was tucked under the right-side carpet to clear the new battery during the install. After the battery install it was placed in the right-side vent hole by “feel” as there is little room to get your hand in and no visibility
i learned from my c6 that if you keep a trickle, even with microprocessor monitoring, battery tender constantly on for 7 years, you will gas out all the water, ruining the battery. DO slice the label covers over the "caps" and remove them periodically to check to see water is still over the plates.
Last edited by SilverGhost; Mar 20, 2020 at 11:59 AM.
Team Owner
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St. Jude Donor '13
The following is from Gerald Uttrachi, a fantastic writer of how-too articles for the C7. Sadly he has moved on ....to the C8
http://netwelding.com/Battery_Issues.pdf
i learned from my c6 that if you keep a trickle, even with microprocessor monitoring, battery tender constantly on for 7 years, you will gas out all the water, ruining the battery. DO slice the label covers over the "caps" and remove them periodically to check to see water is still over the plates.
http://netwelding.com/Battery_Issues.pdf
i learned from my c6 that if you keep a trickle, even with microprocessor monitoring, battery tender constantly on for 7 years, you will gas out all the water, ruining the battery. DO slice the label covers over the "caps" and remove them periodically to check to see water is still over the plates.
Instructor
Joined: Mar 2020
Posts: 240
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From: Newnan, Ga
yes, it is true that all batteries, no matter what type, even sealed cell batteries still off gas a small amount. But putting the cover on shouldn't really be a big deal. It still breathes to an extent.
Banned Scam/Spammer
Joined: Jan 2019
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Apocolips;
During charging, (especially in the event of over charging), lead acid batteries produce oxygen and hydrogen. These gases are produced by the electrolysis of water from the aqueous solution of sulfuric acid. Since the water is lost, the electrolyte can be depleted. This is why you need to add water to non-sealed lead acid batteries.
Note: When a lead acid battery cell "blows" or becomes incapable of being charged properly, the amount hydrogen produced can increase catastrophically.
Aqueous def: is a solution in which the solvent is water. Mostly shown in chemical equations.
Many thanks,
Ray
During charging, (especially in the event of over charging), lead acid batteries produce oxygen and hydrogen. These gases are produced by the electrolysis of water from the aqueous solution of sulfuric acid. Since the water is lost, the electrolyte can be depleted. This is why you need to add water to non-sealed lead acid batteries.
Note: When a lead acid battery cell "blows" or becomes incapable of being charged properly, the amount hydrogen produced can increase catastrophically.
Aqueous def: is a solution in which the solvent is water. Mostly shown in chemical equations.
Many thanks,
Ray
Pro
Joined: Jul 2012
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From: Newington CT
I'm having Paul Koerner install a new battery in my 2016 Stingray Z51 and asked his advice as to which DELCO battery would be best for me. I asked about either an AGM one or one of three 48 series all DELCOS. He said absolutely DO NOT use an AGM type because the computer is NOT programmed for that type and COULD do damage to the computer and also the alternator. Chances are you all know who Paul is and fortunately for me he does all the maintenance on my car. If Paul says it I believe it. BTW his recommendation for me was the DELCO 48PGHR. Ron
Last edited by NoRuls; Mar 20, 2020 at 02:37 PM.
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Le Mans Master
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From: Lake Havasu City Arizona
I'm having Paul Koerner install a new battery in my 2016 Stingray Z51 and asked his advice as to which DELCO battery would be best for me. I asked about either an AGM one or one of three 48 series all DELCOS. He said absolutely DO NOT use an AGM type because the computer is NOT programmed for that type and COULD do damage to the computer and also the alternator. Chances are you all know who Paul is and fortunately for me he does all the maintenance on my car. If Paul says it I believe it. BTW his recommendation for me was the DELCO 48PGHR. Ron
There is no technician more knowledgeable about Corvettes I have been told.
Drifting
Joined: Dec 2019
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From: Blacksburg Va
I'm having Paul Koerner install a new battery in my 2016 Stingray Z51 and asked his advice as to which DELCO battery would be best for me. I asked about either an AGM one or one of three 48 series all DELCOS. He said absolutely DO NOT use an AGM type because the computer is NOT programmed for that type and COULD do damage to the computer and also the alternator. Chances are you all know who Paul is and fortunately for me he does all the maintenance on my car. If Paul says it I believe it. BTW his recommendation for me was the DELCO 48PGHR. Ron
E-Ray, 3LZ, ZER, LIFT
Joined: Sep 2007
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From: NE South Carolina
The following is from Gerald Uttrachi, a fantastic writer of how-too articles for the C7. Sadly he has moved on ....to the C8
http://netwelding.com/Battery_Issues.pdf
i learned from my c6 that if you keep a trickle, even with microprocessor monitoring, battery tender constantly on for 7 years, you will gas out all the water, ruining the battery. DO slice the label covers over the "caps" and remove them periodically to check to see water is still over the plates.
http://netwelding.com/Battery_Issues.pdf
i learned from my c6 that if you keep a trickle, even with microprocessor monitoring, battery tender constantly on for 7 years, you will gas out all the water, ruining the battery. DO slice the label covers over the "caps" and remove them periodically to check to see water is still over the plates.
Le Mans Master
Joined: Aug 2015
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I looked up Pauls credentials and he is well respected. Having said that, i dont think a master GM tech would ever reccomend a non OEM part as part of their job. For passenger vehicles, AGM batteries have way more pros than cons. I suspect GM doesnt use them because they cost more. They were even too cheap to put a handle on the OEM delco. I havent read one case of an AGM battery causing damage in the C7. Folks are even using Lithium now.
Pro
Joined: Jul 2012
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From: Newington CT
I looked up Pauls credentials and he is well respected. Having said that, i dont think a master GM tech would ever reccomend a non OEM part as part of their job. For passenger vehicles, AGM batteries have way more pros than cons. I suspect GM doesnt use them because they cost more. They were even too cheap to put a handle on the OEM delco. I havent read one case of an AGM battery causing damage in the C7. Folks are even using Lithium now.
Last edited by NoRuls; Mar 21, 2020 at 10:58 AM.
E-Ray, 3LZ, ZER, LIFT
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From: NE South Carolina
Now less expensive, more conventional stacked plate AGM batteries are available (as is the unique cylindrical wrapped "plates" in the Optima design; bought my Johnson Controls some years ago.) Johnson Controls battery group (now owned by Canadian company Clarios) and a few others make them for many brands. Toured their plant and reclamation faculties in our town. At the end of the manufacturing production line folks put on one of ~20 Brand labels!
Last edited by JerryU; Mar 21, 2020 at 11:14 AM.
Le Mans Master
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