rvtravels
Weekender RV’er
Sportmen classic 180QB.
Posts: 85
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Post by rvtravels on Dec 2, 2021 11:54:40 GMT -5
Hi, I have a KZ 180QB and have 2 x 12v battries. Would 2 x 6v battries be better for boondocking?
Anyone know if the 2, 12v battries would last longer and also would the two 6v battries weigh less than the two 12v battries?
Tongue weight is an on going concern with a half ton 1500 Ram, what with the low payload it comes with, so I am hoping for a lower weight even if performance is the same between them.
Thanks
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Post by laknox on Dec 2, 2021 16:52:27 GMT -5
Hi, I have a KZ 180QB and have 2 x 12v battries. Would 2 x 6v battries be better for boondocking? Anyone know if the 2, 12v battries would last longer and also would the two 6v battries weigh less than the two 12v battries? Tongue weight is an on going concern with a half ton 1500 Ram, what with the low payload it comes with, so I am hoping for a lower weight even if performance is the same between them. Thanks 2 6v golf cart batteries will give you more overall storage because they can be drawn down further than 12v's, without damage. Apples to apples, weight will likely be about the same, but the 6v's are usually quite a bit larger in size than most 12v's you typically see. You =can= get larger size 12's, but you still have the draw-down issue, in that if you draw 12's down too much, they simply won't recover. We're talking 12.2 volts on most is considered 50% charge. You get into the 11v range, and your battery is likely damaged. 6v deep cycle batteries can repeatedly be discharged down to 20% capacity and completely recharged repeatedly, without damage. If you want to spend some bucks, switch to Li batteries. You'll get 3-4x the charge capacity for the same weight, but you'd likely have to change the power converter to one that will handle Li batteries, as well as installing a BMS (battery monitoring system) to make sure that all the cells are equally charged and temp stable. Lyle |
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