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09-02-2011, 02:35 PM
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#1
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Member
Join Date: Aug 2011
Location: Ronan, MT
Posts: 55
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tying 6v batteries together?
I have a 90.5 blunder with solar panel and two 6v batteries tied together. Are you supposed to connect them by positive on one battery to negative on other battery? Solar panel is working-i have 18.5 volts running thru it.
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09-02-2011, 02:46 PM
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#2
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Senior Member
Join Date: Dec 2006
Location: St. Augustine, FL
Posts: 3,595
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To get 12 volts from two 6 volt batteries you would connect the neg on one to the pos on the other. That will leave you one neg and one pos terminal free (one on each battery) that you connect your load to.
AS to the 18.5 volts from your solar panel.........I hope you have a controller to reduce the voltage as 18 volts will cook your batteries
__________________
KIX
'02 Ultimate Advantage 40J Spartan MM - Cummins ISC
2013 Jeep Rubicon JK Unlimited
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09-02-2011, 02:51 PM
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#3
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Senior Member
Newmar Owners Club
Join Date: Jan 2010
Posts: 4,589
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You are correct about the configuration. After you connect the batteries together as stated connect up the pos and neg feeds from the coach to the batteries.
18.5 volts going to your batteries is too high and will boil the electrolyte. Do you have a controller to regulate the voltage??
__________________
2007 Newmar DSDP 4023
Discovery is seeing what everyone else has seen and thinking what no one else has thought.
If you want to see what man made go East; if you want to see what God made go West.
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09-02-2011, 05:54 PM
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#4
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Senior Member
Join Date: Jan 2000
Posts: 396
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Hope you also have a diode in the solar system to keep things from going in reverse at night..
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Bill Splaine, Meridian, ID WA7WS
2022 Grand Design Imagine XLS 22RBE, 2023 MB Sprinter 144" 3500 aka BlauMax (aka GreatWhite), Amateur Radio, Woodcarving and more
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09-02-2011, 06:13 PM
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#5
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Senior Member
Newmar Owners Club
Join Date: Apr 2010
Posts: 460
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Welcome Ram1961 from us in Whitehall. Did you measure the 18.5 VDC at no load?
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09-03-2011, 12:53 AM
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#6
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Senior Member
Winnebago Owners Club Workhorse Chassis Owner
Join Date: Sep 2007
Posts: 2,976
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Quote:
Originally Posted by RAM1961
I have a 90.5 blunder with solar panel and two 6v batteries tied together. Are you supposed to connect them by positive on one battery to negative on other battery? Solar panel is working-i have 18.5 volts running thru it.
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check this resource.
Electrical Tutorial
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01 WINNEBAGO 35U W20.8.1L 5sp allison SW Wa,. Good Sam, SKP. RVM 198 AMSOIL fluids. BANKS ecm program. SCAN GAUGE II w/ Ally temp. 2 LIFELINE GPL-6CT AGM Batts on their sides. Michelins, TST tptts. K&N panel air filter. AERO mufflers. TAYLOR plug wires. ULTRA POWER track bar. KONI fsd shocks, toad '21MB GLA FWD on dolly
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09-03-2011, 01:16 AM
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#7
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Registered User
Vintage RV Owners Club Gulf Streamers Club
Join Date: Oct 2010
Location: Indiana
Posts: 4,951
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09-03-2011, 08:05 AM
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#8
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Member
Join Date: Aug 2011
Location: Ronan, MT
Posts: 55
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Thanks for all the info. I don't know about a controller or diode. Not even sure where to look. This system and hwh levelling system are the only two components that didn't have a manual.
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09-03-2011, 08:42 AM
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#9
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Senior Member
Join Date: Nov 2007
Location: somewhere in the west
Posts: 1,168
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If that solar panel is one of those cuts little square battery minder types, you may get 18.5 volts, but next to nothing in the way of amps. Boiling a batt with one of those, especially 6 volt deep cycle is next to impossible.
A larger panel is another story, and NO, I am not implying I know which is in use.
Ed
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09-05-2011, 08:23 PM
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#10
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Member
Join Date: Aug 2011
Location: Ronan, MT
Posts: 55
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Quote:
Originally Posted by Ed-Sommers
If that solar panel is one of those cuts little square battery minder types, you may get 18.5 volts, but next to nothing in the way of amps. Boiling a batt with one of those, especially 6 volt deep cycle is next to impossible.
A larger panel is another story, and NO, I am not implying I know which is in use.
Ed
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its about a foot square. The 18.5 volts I read was from a line straight off solar panel that was not connected to anything at the time. Its for the chassis battery which I monitored all weekend when I connected it. With it connected, the chassis battery never read more than 12.7 volts while not running. I ran to sandpoint and replaced both 6v batteries with new electric golf cart batteries. That system stayed steady at 12.5 volts when motor wasn't running. So perhaps there is some controlling device?
Now to get onan 6500 nhe genset running. Got new spark plugs but didn't bring gap gauge. Old plugs ran well for 5 minutes then started surging and wavering then died. Wait 20 minutes and repeat. Got everything else to work.
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09-05-2011, 08:29 PM
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#11
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Senior Member
Newmar Owners Club
Join Date: Jan 2010
Posts: 4,589
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Ram,
Didn't know you had the small panel. by the time that voltage gets to the batteries it should be down to about 13 or 14 volts because of the voltage drop to the batteries.
__________________
2007 Newmar DSDP 4023
Discovery is seeing what everyone else has seen and thinking what no one else has thought.
If you want to see what man made go East; if you want to see what God made go West.
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09-05-2011, 08:36 PM
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#12
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Member
Join Date: Aug 2011
Location: Ronan, MT
Posts: 55
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Quote:
Originally Posted by bigskymt
Welcome Ram1961 from us in Whitehall. Did you measure the 18.5 VDC at no load?
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Thanks for welcome. I have customers there....too
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09-06-2011, 09:13 AM
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#13
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Senior Member
Join Date: Nov 2007
Location: somewhere in the west
Posts: 1,168
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Quote:
Originally Posted by RAM1961
its about a foot square. The 18.5 volts I read was from a line straight off solar panel that was not connected to anything at the time. Its for the chassis battery which I monitored all weekend when I connected it. With it connected, the chassis battery never read more than 12.7 volts while not running. I ran to sandpoint and replaced both 6v batteries with new electric golf cart batteries. That system stayed steady at 12.5 volts when motor wasn't running. So perhaps there is some controlling device?
Now to get onan 6500 nhe genset running. Got new spark plugs but didn't bring gap gauge. Old plugs ran well for 5 minutes then started surging and wavering then died. Wait 20 minutes and repeat. Got everything else to work.
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That solar panel is only good to MAINTAIN a fully charged battery, not enough oomp there do any charging. Direct connection is fine, not enough amperage to do any damage.
Ed
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