AGM charge level
#1
Posted 04 January 2012 - 06:56 PM
My new AGM after a smart charge settles at a max of 12.93v. After a few days it seems to be around 12.89 to 12.87v. My question: is there a normal "full" charge voltage, and what is the lowest I'd want the battery to go. I.e. what is the voltage range of one of these batteries, so I can determine a % charge (voltage)?
I'm sure this is on here somewhere but I can't find my specific answers.
Thanks.
#2
Posted 04 January 2012 - 07:39 PM
Your numbers sound fine, for general purposes 12.8+V is usually considered charged, keep in mind a battery will self discharge as time passes as well.
2022 F350 7.3L; family trailer at the moment and some aluminum stuck together to eventually form another truck camper
#3
Posted 04 January 2012 - 07:46 PM
And I have noticed the decline after taking the charger off. It will take several hours to drop from over 13v to where it settles at 12.93. But typically the next day I'll be at around 12.89 or so.
#4
Posted 04 January 2012 - 08:05 PM
2010 Ford F250 4X4; 6.4 Powerstroke Diesel; Warn 16.5 winch; Airlift Springs; Transfer Flow 47 gal. fuel tank, BDS 4" lift kit, BDS dual steering stabilizer with upgraded Fox 2.0 shocks, Toyo 35X12.50X18 Open Country M/T tires, Pro Comp wheels; 2008 FWC Hawk Camper; 2000 Toyota Tundra.
#5
Posted 04 January 2012 - 08:27 PM
100% 12.8+
75% 12.6
50% 12.3
25% 12
0% 11.8
Also typical life cycles on Deka:
100% drawn = 150
80% drawn = 200
50% drawn = 370
25% drawn = 925
10% drawn = 3100
2022 F350 7.3L; family trailer at the moment and some aluminum stuck together to eventually form another truck camper
#6
Posted 04 January 2012 - 08:47 PM
#7
Posted 05 January 2012 - 06:46 AM
Specs on that battery are:
100% 12.8+
75% 12.6
50% 12.3
25% 12
0% 11.8
Also typical life cycles on Deka:
100% drawn = 150
80% drawn = 200
50% drawn = 370
25% drawn = 925
10% drawn = 3100
Wow It's nice to know that I have a pretty good battery, (I think.) Mine's a DEKA 1131MF
Old, bum around in Ford and an even older FWC Grandby
New Mantra: "Everyday camping is just making up for lost time"
#8
Posted 05 January 2012 - 03:18 PM
2022 F350 7.3L; family trailer at the moment and some aluminum stuck together to eventually form another truck camper
#9
Posted 16 December 2020 - 05:55 PM
Specs on that battery are:
100% 12.8+
75% 12.6
50% 12.3
25% 12
0% 11.8
Also typical life cycles on Deka:
100% drawn = 150
80% drawn = 200
50% drawn = 370
25% drawn = 925
10% drawn = 3100
Hey Pods- where did you pull those numbers? I was concerned about the same battery (Intimidator 8A24M, 79AH) so I called Deka. They said that my battery showing 12.57 was a full charge. Thoughts on that?
Edited by portermoab, 16 December 2020 - 05:56 PM.
#10
Posted 02 January 2021 - 08:41 PM
Understanding the best way to maintain my Exide Edge FP-AGM24DP battery that came with my 2017 Fleet has also been one of my weak spots. I have a Noco Genius 2 battery charger/tender and keep it plugged in when the camper is not in use. I connect it through the solar charging SAE port on the rear of the camper and in order to connect this correctly, you have to use a polarity reverser/adapter since the solar port is the opposite polarity for charging with a device. Keeping the battery charged when not in use mostly works this way and when I had the 4 year old batter checked at Batteries Plus last month they said it was still in good shape. Whenever I am using the camper the battery is kept charged either through driving or through a portable 140 watt Zamp solar panel that also has a monitor that I use to check on how good the battery is. A full charge using this will read 14.4 V which seems strange to me, but Zamp confirmed that this was a good reading for my AGM 12V battery. At some point, I plan to add a roof mounted panel as well since I am often worried that the portable version may decide to walk off sometime when I am parked at a trailhead even with a long steel cable and lock run through the portable panel legs. Anyone care to critique or comment about this routine?
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