Batteries
#1
Posted 19 August 2020 - 12:45 AM
Montreat 2015 Fleet 2015 Tacoma 4wd
#2
Posted 19 August 2020 - 01:18 AM
When running two 6V batteries you must connect them in series vice parallel. When two batteries are connected in series you do not add the ah, however you do add the voltage. Therefore 2x 6V 220ah batteries, wired in series, will yield you a 12v battery bank with 220ah. You may be able to take them down to a deeper depth of charge but I'm not 100% certain on that.
I'm surprised you are using so many watt hours running just the refrigerator, might be worth installing a battery monitor so you can see how much amperage you're actually drawing / able to design your new battery bank around your expected needs.
2014 F-350 | 2019 FWC Hawk | King Suspension
#3
Posted 19 August 2020 - 01:40 AM
Montreat 2015 Fleet 2015 Tacoma 4wd
#4
Posted 19 August 2020 - 02:10 AM
Two 6V batteries (6V, 220AH)
- run in series = 12V, 220AH
- run in parallel = 6V, 440AH
#5
Posted 19 August 2020 - 02:21 AM
Montreat 2015 Fleet 2015 Tacoma 4wd
#6
Posted 19 August 2020 - 02:26 AM
currently am running (2) 12 volt agm batteries which have 78 ah each. After running nothing but the refrigerator overnight they drop to 12.5 volts. I feel I need to increase my capacity and find 12 volt size 24 batteries at 100 ah. I also see 6 volt batteries have 220 ah, if I run (2) 6 volt would this give me 440 ah or do I reduce this in half because of it being 6 volt? Any suggestions would be appreciated.
12.5V doesn't sound like a problem. 12.6 is fully charged, resting voltage. Before buying new batteries, get a Victron BMV 712 so you can determine the actual SOC (State of Charge)
2012 ATC Puma Shell build - https://www.wanderth...012-puma-build/
Power considerations thread - https://www.wanderth...e-power-scotty/
Building out an electrical system - So, you want to setup a good electrical system in your camper? - Electrical, Charging, Solar, Batteries and Generators - Wander the West
#7
Posted 19 August 2020 - 02:38 AM
Montreat 2015 Fleet 2015 Tacoma 4wd
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