Vintage Chevrolet Club - Forums
A nonprofit organization dedicated to the preservation, restoration and enjoyment of all Chevrolets and GMCs.


Owner: Rustoholic
Previous Thread
Next Thread
Print Thread
Rate Thread
6 volt battery charge? #232244
01/26/12 10:41 PM
01/26/12 10:41 PM
Joined: Mar 2011
Posts: 165
covina cal
stanman Offline OP

Shade Tree Mechanic
stanman  Offline OP

Shade Tree Mechanic
Joined: Mar 2011
Posts: 165
covina cal
Hi guys
What happens if I use a modern 12 volt charger on a 6 volt battery?
If I keep my eye on things, is it safe ?
Stanman


earlychevguy
Re: 6 volt battery charge? [Re: stanman] #232249
01/26/12 11:07 PM
01/26/12 11:07 PM
Joined: Sep 2009
Posts: 4,755
NC usa
4
41specialdeluxe Offline

ChatMaster - 4,000
41specialdeluxe  Offline

ChatMaster - 4,000
4
Joined: Sep 2009
Posts: 4,755
NC usa
I'm not sure but owing to a faster charge there may be even more volatile gases about and a dangerous possibility for a battery explosion. I just wouldn't try it. Chipper?
Charlie computer

Re: 6 volt battery charge? [Re: 41specialdeluxe] #232252
01/26/12 11:15 PM
01/26/12 11:15 PM
Joined: Dec 2001
Posts: 9,663
Vancouver, WA
AntiqueMechanic Online happy

AntiqueMechanic  Online Happy


ChatMaster - 9,000
Joined: Dec 2001
Posts: 9,663
Vancouver, WA



Not at all recommended.


Agrin devil


RAY
Member Chat Group - Non-Geographical Region

Chevradioman
http://www.vccacolumbiariverregion.org/



If you need a shoulder to cry on, pull off to the side of the road.

Death is the number 1 killer in the world.


Re: 6 volt battery charge? [Re: AntiqueMechanic] #232254
01/26/12 11:18 PM
01/26/12 11:18 PM
Joined: Mar 2011
Posts: 165
covina cal
stanman Offline OP

Shade Tree Mechanic
stanman  Offline OP

Shade Tree Mechanic
Joined: Mar 2011
Posts: 165
covina cal
Thanks
I hear you loud and clear.
Stanman


earlychevguy
Re: 6 volt battery charge? [Re: 41specialdeluxe] #232268
01/27/12 12:51 AM
01/27/12 12:51 AM
Joined: Nov 2001
Posts: 16,692
The Great State of TEXAS
Chipper Offline

Chipper  Offline


ChatMaster - 15,000
Joined: Nov 2001
Posts: 16,692
The Great State of TEXAS
Charlie,
Since you asked, not a good idea. But you can connect two 6 volt batteries in series and use a 12 volt charger. Don't know if the automatic shut-off feature on a modern charger will work properly so it might be wise to watch them during charging if at a higher amperage rate than the minimum for the charger.


How Sweet the roar of a Chevy four!
Re: 6 volt battery charge? [Re: Chipper] #232277
01/27/12 02:12 AM
01/27/12 02:12 AM
Joined: Dec 2001
Posts: 9,663
Vancouver, WA
AntiqueMechanic Online happy

AntiqueMechanic  Online Happy


ChatMaster - 9,000
Joined: Dec 2001
Posts: 9,663
Vancouver, WA


I don't even recommend the series set-up for charging. If the condition of one battery is different, it will provide a different load, which would not be equal to the other battery. To charge equally they must be in the exact same condition.

Parallel charging, a 2 or more 12-volt batteries being charged by a 12-volt charger, is an acceptable procedure.


devil Agrin

Last edited by AntiqueMechanic; 01/27/12 02:17 AM. Reason: added information

RAY
Member Chat Group - Non-Geographical Region

Chevradioman
http://www.vccacolumbiariverregion.org/



If you need a shoulder to cry on, pull off to the side of the road.

Death is the number 1 killer in the world.


Re: 6 volt battery charge? [Re: AntiqueMechanic] #232292
01/27/12 04:08 AM
01/27/12 04:08 AM
Joined: Nov 2001
Posts: 16,692
The Great State of TEXAS
Chipper Offline

Chipper  Offline


ChatMaster - 15,000
Joined: Nov 2001
Posts: 16,692
The Great State of TEXAS
Ray,
I must respectfully partially disagree with your recommendation against series charging two six volt batteries with a 12 volt charger. While it is far better to charge cells (each 6 volt has three and each 12 volt has six cells) that are equally charged or discharged, it can be done safely with careful monitoring of the process.

If all the cells are approximately equal then it is a no different than a 12 volt battery. It is when there is a major difference in the cells that can be a problem. That can be with either a single 12 volt (like with a bad cell) or two 6 volt batteries in series (negative on one battery to positive on the other and negative charger lead to free negative and positive lead to free positive post) where one has more of a charge than the other. The one with more charge will reach full charge before the other and exhibit greater water loss but with monitoring will not likely be a problem.

There are some RV installations and heavy equipment that use two series batteries to obtain higher output than is available with commonly available battery types or where battery size is a consideration. It is not common.

I agree purchasing a 6 volt battery charger is by far the best option.


How Sweet the roar of a Chevy four!
Re: 6 volt battery charge? [Re: Chipper] #232306
01/27/12 05:05 AM
01/27/12 05:05 AM
Joined: Aug 2006
Posts: 1,326
Iowa
Uncle Ed Offline

ChatMaster - 1,000
Uncle Ed  Offline

ChatMaster - 1,000
Joined: Aug 2006
Posts: 1,326
Iowa
I think it will work to hook 2 6 volt batteries in series as long as the batteries are in a similar condition, but as Chipper said the best way is use a 6 volt charger. There are a lot of inexpensive chargers with a 6 volt/12 volt switch.

Last edited by Uncle Ed; 01/27/12 05:07 AM.

Ed
Re: 6 volt battery charge? [Re: Uncle Ed] #232525
01/29/12 01:59 AM
01/29/12 01:59 AM
Joined: Nov 2002
Posts: 4,790
merrimack nh
m006840 Offline

ChatMaster - 4,000
m006840  Offline

ChatMaster - 4,000
Joined: Nov 2002
Posts: 4,790
merrimack nh
Many heavy trucks of the 60's and 70's used six volt batteries connected in series with 12volt charging systems with no unusual charging problems. If all cells are equal it will be fine. A 12volt battery is six cells in series in one case and no different than 2 six volt batteries in series, other than the method of connecting.


Steve D
Re: 6 volt battery charge? [Re: m006840] #232544
01/29/12 04:23 AM
01/29/12 04:23 AM
Joined: Sep 2009
Posts: 396
Lee's Summit, Missouri
Youngfalcon Offline

Backyard Mechanic
Youngfalcon  Offline

Backyard Mechanic
Joined: Sep 2009
Posts: 396
Lee's Summit, Missouri
I'm curious why it seems to take so long to charge a 6 volt battery with my (new) NAPA 6V/12V charger. It has a 10 amp setting for 6V. Neither my "show" Delco or the "daily" Optima batteries show a full charge even after more than 24 hours of charging. The 12 volt setting seems to work fine (on a 12V battery) showing a full charge.

Last edited by Youngfalcon; 01/29/12 04:25 AM.

1934 Three Window Coupe
[img]http://www.youngsdecks.com/YoungsDecks/1934_Chevy.html[/img]
Re: 6 volt battery charge? [Re: Youngfalcon] #232560
01/29/12 02:13 PM
01/29/12 02:13 PM
Joined: Nov 2001
Posts: 16,692
The Great State of TEXAS
Chipper Offline

Chipper  Offline


ChatMaster - 15,000
Joined: Nov 2001
Posts: 16,692
The Great State of TEXAS
I don't know how the NAPA determines % charge. It can be that the circuit that regulates charge tapers back the amperage rate before it actually reaches 100% or the charge rate and 100% are not set correctly. I have also found with some chargers that they actually reach 100% much before indicated. If you disconnect and then reconnect the charger it will show 100%. Best to check with specific gravity or alternately a volt meter to determine actual charge.


How Sweet the roar of a Chevy four!
Re: 6 volt battery charge? [Re: Chipper] #232563
01/29/12 02:54 PM
01/29/12 02:54 PM
Joined: Dec 2001
Posts: 11,162
Central Texas
MrMack Offline
ChatMaster - 10,000
MrMack  Offline
ChatMaster - 10,000
Joined: Dec 2001
Posts: 11,162
Central Texas
Here is what I found about Optima batteries from another site:
Just do not try to maintain Optima batteries with a Battery Tender, it will burn them out. Use the BatteryMindr made for the Optima. They do not like a sustained charging voltage greater than 13.8 VDC.

AND from the Optima Battery web site:

OPTIMA RedTop Charging Information
The following charging methods are recommended to insure a long battery life - always use a voltage-regulated charger, with voltage limits set as described below.

RedTop Type: 6V
These batteries are designed for engine starting applications. They are NOT recommended or warranted for use in deep cycle applications.

Recommended charging information:
Alternator:

■6.65 to 7.5 volts, no amperage limit.
Battery Charger:

■6.9 to 7.5 volts, 10 amps maximum, 6-12 hours approximate.
Rapid Recharge:

■Maximum voltage 7.8 volts (regulated), no current limit as long as battery temperature remains below 125°F (51.7°C). Charge until current drops below 1 amp.
Float Charge:

■6.6 to 6.9 volts, 1 amp maximum current, time indefinite (at lower voltage).





Life's a long winding trail, love Jesus and ride a good horse!
Re: 6 volt battery charge? [Re: MrMack] #232621
01/30/12 12:47 AM
01/30/12 12:47 AM
Joined: Sep 2009
Posts: 396
Lee's Summit, Missouri
Youngfalcon Offline

Backyard Mechanic
Youngfalcon  Offline

Backyard Mechanic
Joined: Sep 2009
Posts: 396
Lee's Summit, Missouri
Mr. Mack,

Thanks for the lengthy reply but I'm not sure I fully understand the numbers and symbols in your message.


1934 Three Window Coupe
[img]http://www.youngsdecks.com/YoungsDecks/1934_Chevy.html[/img]
Re: 6 volt battery charge? [Re: Youngfalcon] #232644
01/30/12 03:37 AM
01/30/12 03:37 AM
Joined: Dec 2001
Posts: 11,162
Central Texas
MrMack Offline
ChatMaster - 10,000
MrMack  Offline
ChatMaster - 10,000
Joined: Dec 2001
Posts: 11,162
Central Texas
The numbers [&#9632] are just part of the text codeing.


Life's a long winding trail, love Jesus and ride a good horse!
Re: 6 volt battery charge? [Re: MrMack] #232920
02/02/12 04:38 AM
02/02/12 04:38 AM
Joined: Sep 2009
Posts: 396
Lee's Summit, Missouri
Youngfalcon Offline

Backyard Mechanic
Youngfalcon  Offline

Backyard Mechanic
Joined: Sep 2009
Posts: 396
Lee's Summit, Missouri
I'm curious to know how your 6V generators do in keeping a 6V Optima battery charged. Do you see any difference from a "regular" 6V battery? Mine is only few months old and the engine has not been ran much since November (surgery, weather) so I don't know what to expect. Thanks for any replies!


1934 Three Window Coupe
[img]http://www.youngsdecks.com/YoungsDecks/1934_Chevy.html[/img]
Re: 6 volt battery charge? [Re: stanman] #233656
02/08/12 07:23 AM
02/08/12 07:23 AM
Joined: May 2011
Posts: 822
Australia.
B
blueyAU Offline

ChatMaster - 750
blueyAU  Offline

ChatMaster - 750
B
Joined: May 2011
Posts: 822
Australia.
Originally Posted By: stanman
Hi guys
What happens if I use a modern 12 volt charger on a 6 volt battery?
If I keep my eye on things, is it safe ?
Stanman


It is NOT safe to use a 12 volt charger on a 6 volt battery.

It will seriously damage the cells and render the battery none serviceable.

The bottom line is to BUY a 6 volt charger or a more useful combined 6V and 12V charger.

The cheap ones from China are total rubbish, buy a reputable brand, made in the USA is preferred, more expensive, but cheaper in the long run.

I have had to do just that very thing and I hope it lasts as long as me and my car. talk
Only the best for your Chevy mate, every time........ beermugs

Peter


2 yy's u r
2 yy'u b
I C U R
2 yy's 4 me



Re: 6 volt battery charge? [Re: Youngfalcon] #233658
02/08/12 11:40 AM
02/08/12 11:40 AM
Joined: Nov 2004
Posts: 284
Palm Harbor, FL
dunfire Offline

Backyard Mechanic
dunfire  Offline

Backyard Mechanic
Joined: Nov 2004
Posts: 284
Palm Harbor, FL
This charger is recommended for Optima batteries. http://www.batterymart.com/p-batteryminder-6v-1a-battery-charger.html


1936 GMC T-14 low cab. TA for 1935-37 GMC

Moderated by  ken48 

Your Status
Please register or login to post or reply. Forget Your Password?
Become a Member!

JOIN THE VCCA and get access to the member-only features of the forum, including the ability to upload photos. You'll also receive our monthly magazine "Generator & Distributor". Yearly membership as low as $25!

Helpful Links
Reset Your Password
Kill Your Cookies
Who's Online Now
2 registered members (Junior_Stock, lachlan31), 4 guests, and 5 spiders.
Key: Admin, Global Mod, Mod
Today's Birthdays
No Birthdays
Member Photos
1942 Chevrolet oldies
1918 Model D-4
My Chevys
My 31' Chevy Show
What is missing?
31' headlight reflectors re-silvered at home
Newest Members
aland, Stickdude, Achipmunk, centercut, Ilike461019
15122 Registered Users
Forum Statistics
Forums69
Topics49,974
Posts362,381
Members15,122
Most Online304
Jun 18th, 2016
 

Notice: Any comments posted herein do not necessarily reflect the official position of the VCCA.

Powered by UBB.threads™ PHP Forum Software 7.6.1.1