Forum Discussion

lawrosa's avatar
lawrosa
Explorer
Mar 16, 2020

Need batterys.

Had 12 volt duracells DC 24. Served me OK. lasted 6 years. They were january 2014 matched pairs.Cell went dead on neg side battery

I Run 1100 watt inverter and do the coffee maker thing and toaster oven for the kids. I plug camper into inverter basically and turn off converter charger.

Boondocking was limited to weekends and overnights.

I do have 560 watts solar and 40 amp mppt.

I have a 2800 watt inverter gen Kohler.

I now have a cpap machine, and I also live in hot climate of myrtle beach.

I have all the boxes if I wanted to go to 6 volt.

I have PD converter 14.4 with wizard. Bigger wire to batts

12 volts specs on the duracell show DC24 footnotes 75aH

a) -low antimony grids
b)Deduct 15% from CCA and CA rating shown to allow for
double insulation (glass mat)
c)Deep cycle batteries also have
special fiberglass mats to improve deep cycling and long-life
performance.

I liked that I could charge these in less then 3 hours

6 volt duracell specs footnotes:::: 215AH

a)Low maintenance-low antimony grids. (same as 12's)
b)Peak performance capacity.
c)Premium glass mat reinforcement protects
battery’s ability to store energy


Heres my delema:::: ( And I never had 6 volters always dual 12's)


Im afraid to go 6 volt. Why? Voltage drop, resistance, long charging etc..

I can easily use perculator, and cook in the RV oven if and when I boon dock.

Im afraid I will not be able to charge them well or fast with the PD when boondocking. resistance.

Plus 13.6 volt is off a bit from what the 6's want. To equalize id have to pull out the old sears charger from 1982. 50 amp 10-2

My only reason leaning on 6 volts now it that last hurricane it was mass migration out of dodge. Camp grounds hard to find. The 6 volts would allow less worry possibly if I could not find a place to camp.

Are the new 12 volt batts different now? ( per the foot notes above?) Better?



Sams club has sale and I am buying this week. Two 12s $59 bucks a piece

Two 6's 89.98 a piece..

Note:: I am note buying any other battery then these two sizes. 75ah 24's or 215AH 6's. and I am only buying duracells. Please dont sell me on something else.

well interstae is down here. That would be a choice but for the price most likely not. and I hear interstates are just mish mosh of venders. Although the interstate 12's weigh 46.5 lbs. more then the duracells by 1.5 lbs..

Id rather hydrometer 6 cells then 12 cells too.lol getting old...

Thank you for your time..

Mike SC

24 Replies

  • 6V GC batteries from all that I have read are true deep cycle batteries that are not damaged by drawing down by 50%. The same can not be said for 12 volt RV/Marine batteries.
    GC batteries are designed and built for the type of usage you are exposing them to.
  • At 50% state of discharge, the 6V will have provided 50% more Ah (32 Ah more) than the 12v. If charge time matters that much and you don't need the extra capacity why consider the 6V in the first place?

    Where I camp, that energy is needed to run the furnace all night at a reasonable temperature. It is also nice not having to worry and monitor to be sure of not going past a 50% state of discharge. I like my 6es.
  • Sir you out do not dip all cells. Yout dip the weakest cell in the battery and only have to verify once or twice a year.

    Top charge all batteries then cycle them a few times. The lowest cell will reveal itself.
  • Best lead acid batteries available are not going to be able to recharge from 80% to 100% in less than 3.5 hours, whether 6s or 12's

    12v flooded in my experience require way longer at higher voltages to attain maximum specific gravity and without achieving this weekly, they tank in performance quickly and then take even higher voltaegs applied longer to restore some fraction of that capacity.

    6's will not have the same voltage retention under high loads, this is true.

    Rebranded Batteries from 6 years earlier, are not made by the same outfit today and if they are, they've figured out how much more profit they can squeeze but cutting quality as much as they can until the warranty claims eat into that max profit/maximum executive bonus.

    Internet rumor via automotive forums says Interstate moved a lot of their batteries to Exide as their supplier, and many are quickly failing.