I purchased 2 new batteries for my Vibe, I've heard 2 ways of wiring and not sure which is right or wrong. Connect ground to ground and positive to positive is a given, I heard the positive on one battery to the camper and the negative from the second to ground. And I also heard both positive and ground on the same battery. Any thoughts. Thanks in advance.
I purchased 2 new batteries for my Vibe, I've heard 2 ways of wiring and not sure which is right or wrong. Connect ground to ground and positive to positive is a given, I heard the positive on one battery to the camper and the negative from the second to ground. And I also heard both positive and ground on the same battery. Any thoughts. Thanks in advance.
Yup, that's the way! While you're at it, you might consider putting a disconnect switch from the negative terminal closest to the ground point. That will avoid discharge from parasitic equipment.
Quote:
Originally Posted by MarkR24
I purchased 2 new batteries for my Vibe, I've heard 2 ways of wiring and not sure which is right or wrong. Connect ground to ground and positive to positive is a given, I heard the positive on one battery to the camper and the negative from the second to ground. And I also heard both positive and ground on the same battery. Any thoughts. Thanks in advance.
Yup, that's the way! While you're at it, you might consider putting a disconnect switch from the negative terminal closest to the ground point. That will avoid discharge from parasitic equipment.
You can give me a call to explain how to better than what I've put up so far
843-872-5022
Google "the 12 Volt Side of Life"
It'll explain with pics, how to setup a pair of 12v batteries.
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Positive to positive, negative to negative gives 12 volts with more amperage.
If you go positive - negative to positive - negative then to ground then you will have 24 volts which will damage any 12 volt control boards.
Sorry, Herk7769 has the correct hook-up in his post. I'm slow and didn't have pics.
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ALWAYS pull the feeds off the opposite batteries, that way the converter 'sees' both batteries as one when charging.. and when discharging equally. Myself, I run twin 6 volt Trojans (gold cart batteries) in series for 12 volts at 2 times the amp hour capacity of double 12's.
ALWAYS pull the feeds off the opposite batteries, that way the converter 'sees' both batteries as one when charging.. and when discharging equally. Myself, I run twin 6 volt Trojans (gold cart batteries) in series for 12 volts at 2 times the amp hour capacity of double 12's.
I think you are mistaken. When wired in series, 2 sixes double the voltage and not the capacity; when wired in parallel they double the capacity but not the voltage.
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Lou & Freya the wonder dog
2008 GMC Sierra 3000HD Allison Duramax
2019 Flagstaff 8529FL
Look at this connection with a Marine switch.
You can disconnect all the batterys or use only 1 or select in parallel or just battery 2.
On amazone the switch cost $25.
All the possebility are there!
For more info, let me know.
I think you are mistaken. When wired in series, 2 sixes double the voltage and not the capacity; when wired in parallel they double the capacity but not the voltage.
I think he was implying that the AH from a six is twice that of two 12s... not that connecting two 6s in series doubled the AH of a single 6.
I use two Trojan T105 6vdc batteries is series. Each battery is like 225AH... for a total of 12vdc with 225AH.
Almost no (any?) 12vdc batteries are true deep cycle, so two 6s seem to always give more that two 12s. When including the durability and number of cycles in the conversation, there is no comparison. This of course is for lead acid batteries.
Look at this connection with a Marine switch.
You can disconnect all the batterys or use only 1 or select in parallel or just battery 2.
On amazone the switch cost $25.
All the possebility are there!
For more info, let me know.
I can't think of any rv application that involves only 6v. Why spend all that money when that disconnect switch i recommend is only 5-6$ at harbor freight and very easy to connect and use.
I think he was implying that the AH from a six is twice that of two 12s... not that connecting two 6s in series doubled the AH of a single 6.
I use two Trojan T105 6vdc batteries is series. Each battery is like 225AH... for a total of 12vdc with 225AH.
Almost no (any?) 12vdc batteries are true deep cycle, so two 6s seem to always give more that two 12s. When including the durability and number of cycles in the conversation, there is no comparison. This of course is for lead acid batteries.
As in any discussion of battery capacities, I have found that comparing apples to oranges can make any point needed. Comparing group size to group size will give a clearer picture.
If you compare the capacities of two deep cycle six volt group 24 size batteries to 2 deep cycle group 24 12 volt batteries, the bank capacities are actually very similar.
A Trojan 6 volt T-105 (225AH@20amps) has approximately the same footprint as the 12 volt Trojan SCS150 (100AH@20amps). When installed in a 2 battery bank, the 2 six volt battery bank will hold 225AH and the two 12 volt Trojans will give 200AH.
The two 105s will weight 125 pounds and the two 12 volt SCS150s will weight 100 pounds. The extra lead in the 6 volt batteries account for the missing 25AH. The 6 volt batteries are also a bit over an inch taller.
I can't think of any rv application that involves only 6v. Why spend all that money when that disconnect switch i recommend is only 5-6$ at harbor freight and very easy to connect and use.
It may be just me, but if you want the batteries in your setup to operate properly, you would need to always run in both and to have equal length cables from the switch to each battery so they will charge and discharge equally.
Running them individually (one till it was at 50%; then switch to the other) is also a possibility, but doubles the time spent monitoring battery status.
__________________
Lou & Freya the wonder dog
2008 GMC Sierra 3000HD Allison Duramax
2019 Flagstaff 8529FL
As in any discussion of battery capacities, I have found that comparing apples to oranges can make any point needed. Comparing group size to group size will give a clearer picture.
If you compare the capacities of two deep cycle six volt group 24 size batteries to 2 deep cycle group 24 12 volt batteries, the bank capacities are actually very similar.
A Trojan 6 volt T-105 (225AH@20amps) has approximately the same footprint as the 12 volt Trojan SCS150 (100AH@20amps). When installed in a 2 battery bank, the 2 six volt battery bank will hold 225AH and the two 12 volt Trojans will give 200AH.
The two 105s will weight 125 pounds and the two 12 volt SCS150s will weight 100 pounds. The extra lead in the 6 volt batteries account for the missing 25AH. The 6 volt batteries are also a bit over an inch taller.
I just wanted to show that the choice between two 6 volt batteries vs. two 12 volt batteries of equal construction and size is not a "slam dunk".
My point was, two 6s often provided more AH than two 12s... even though the 6s do not double the AH whereas the 12s do double the AH.
This was in an attempt to explain to the poster I was replying to my inferred understanding of another poster. (A poster thought another was stating AH doubles when in series, however I was explaining why I thought that statement wasn't being made and that it was just a confusion on how many more AHs 6vdc batteries have over 12.)
I'm sure I have totally confused everyone now... [emoji846]
I think you are mistaken. When wired in series, 2 sixes double the voltage and not the capacity; when wired in parallel they double the capacity but not the voltage.
I may be but I run 2 Trojan 6 volt GC batteries and they seem to have plenty of power reserve, adhering to the 50% discharge rule.
When they finally expire, I'll be going to a pair of Li-Iron batteries. Hopefully, I'll win the lottery before I buy them at 800 bucks each.
My Diagram show only 12 volt battery`s.
But I can do it with 6 volts bank battery`s.
What you cannot see is that with that marine switch arangement is that you could exemple: Use only Bat1 and keep Bat2 has a backup if you run out of juice.
You could also charge Bat1 with your TT converter and charge Bat2 with a external Battery charger. That would speed up the time to recharge your Battery`s or disconnect all the battery`s and a lot more.
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