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Patriot Dave
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Topic: Two 6 - volt battery, question Posted: 16 Aug 2016 at 1:38pm |
I have installed two golf cart 6 volt batteries.
With that said; Is it safe to take them lower than 50% discharge. Reading my digital volt meter at what point is a good number at which I should start charging.
Thanks
Dave
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Dave & Joyce
Never Forget, In God We Trust; This Our National Motto.
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WillThrill
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Posted: 16 Aug 2016 at 3:03pm |
Originally posted by Patriot Dave
I have installed two golf cart 6 volt batteries.
With that said; Is it safe to take them lower than 50% discharge. Reading my digital volt meter at what point is a good number at which I should start charging.
Thanks
Dave |
Dave,
Golf cart batteries cycle better than do the more common 12 volt marine batteries, but taking them below 50% on a regular basis will still reduce their lifespan.
At 12.2 volts, your batteries are roughly at 50% charge, so they should be recharged at that point, if not before.
Percentage of Charge | 12 Volt Battery Voltage | 24 Volt Battery Voltage | Specific Gravity | 100 | 12.70 | 25.40 | 1.265 | 95 | 12.64 | 25.25 | 1.257 | 90 | 12.58 | 25.16 | 1.249 | 85 | 12.52 | 25.04 | 1.241 | 80 | 12.46 | 24.92 | 1.233 | 75 | 12.40 | 24.80 | 1.225 | 70 | 12.36 | 24.72 | 1.218 | 65 | 12.32 | 24.64 | 1.211 | 60 | 12.28 | 24.56 | 1.204 | 55 | 12.24 | 24.48 | 1.197 | 50 | 12.20 | 24.40 | 1.190 | 45 | 12.16 | 24.32 | 1.183 | 40 | 12.12 | 24.24 | 1.176 | 35 | 12.08 | 24.16 | 1.169 | 30 | 12.04 | 24.08 | 1.162 | 25 | 12.00 | 24.00 | 1.155 | 20 | 11.98 | 23.96 | 1.148 | 15 | 11.96 | 23.92 | 1.141 | 10 | 11.94 | 23.88 | 1.134 | 5 | 11.92 | 23.84 | 1.127 | Discharged | 11.90 | 23.80 | 1.120
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https://www.emarineinc.com/Batteries-Maintenance-101
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"Not all those who wander are lost." Tolkien
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Patriot Dave
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Posted: 16 Aug 2016 at 5:29pm |
Great and Thanks for the info, it is much appreciated.
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Dave & Joyce
Never Forget, In God We Trust; This Our National Motto.
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Retired; So Every Day is Saturday.... Except Sunday
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Patriot Dave
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Posted: 16 Aug 2016 at 6:48pm |
Giving it some more thought; there is no difference between 1 - 12 volt verses 2 - 6 volts?
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Dave & Joyce
Never Forget, In God We Trust; This Our National Motto.
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CharlieM
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Posted: 16 Aug 2016 at 9:40pm |
The difference is two 6V batteries will generally give you much more capacity than a single 12V. Even two 12V batteries of the type usually employed (GP24, 27) are less capacity. And it's a fact that individual 2V cells like to be used in series, not parallel. It helps in equalizing the loads.
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Charlie
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techntrek
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Posted: 16 Aug 2016 at 10:02pm |
Either way it is a 12 volt system and the batteries function the same, just with more lead mass with the golf cart batts, which gives you more available energy.
The rule of thumb is stay above 50% DOD most of the time, an occasional dip below that is ok but never go below 35% DOD. This is followed with most off-grid solar home systems.
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Patriot Dave
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Posted: 17 Aug 2016 at 6:39am |
Originally posted by CharlieM
The difference is two 6V batteries will generally give you much more capacity than a single 12V. Even two 12V batteries of the type usually employed (GP24, 27) are less capacity. And it's a fact that individual 2V cells like to be used in series, not parallel. It helps in equalizing the loads.
Thanks for the reply and I better now know or understand.
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Dave & Joyce
Never Forget, In God We Trust; This Our National Motto.
Member; Patriot Guard Riders, Michigan Chapter
Retired; So Every Day is Saturday.... Except Sunday
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Patriot Dave
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Posted: 17 Aug 2016 at 6:41am |
Thanks for the reply.
DOD? Meaning? _________ of Discharge
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Dave & Joyce
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JandL
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Posted: 17 Aug 2016 at 9:04am |
DOD, short for the Depth of Discharge, is used to describe how much the battery is discharged
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JandL
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Patriot Dave
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Posted: 17 Aug 2016 at 11:02am |
Originally posted by JandL
DOD, short for the Depth of Discharge, is used to describe how much the battery is discharged |
OK, Thanks
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Dave & Joyce
Never Forget, In God We Trust; This Our National Motto.
Member; Patriot Guard Riders, Michigan Chapter
Retired; So Every Day is Saturday.... Except Sunday
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