Combining Dissimilar Battery ah?
I know there are a few people here with real-world experience with this, so I hope they chime in! QUESTION: With a small 12v AGM battery (33ah), I have the choice of paralleling a slightly larger ...
Forum Discussion
I you are combining AGM 12 volt batteries. Then they will form a perfect commune, that is each will produce power according to its ability and each will "Eat" according to its need..
There are folks who will yammer "Oh the batteries won't charge equally and when the smaller battery fills up it will signal the converter to go to float bla bla bla" And with batteries in PARALLEL such as you describe.. THEY ARE NUTS, is all I can say, that very simply can not happen.
Now with batteries in series yes, that is true, but you are not doing that so disregard this paragraph.
You may mix larger and smaller batteries no problem, Under most conditions, so long as they are the same in all other factors (AGM, DEEP CYCLE, AGM STARTING, AGM Marine/Deep cycle) I would mix starting and deep cycle though.
ONE warning... This is something I learned EARLIER today but frankly I should have figured it out on my own..... But I am still learning (Today is a good day, I learned).
AGM batteries gas just like flooded wet cells, the difference is the Oxygen and Hydrogen are re-combined inside the battery.. THIS,,, releases HEAT (I mean if you do it with enough of those two the boom may well be heard some distance away kind of heat, Inside the battery it's done a few molicules (3 to be precise 2 of H2, one of O2) at a time, so there is no BOOM, but there is heat.
And if it happens fast enough, said HEAT can cause a fire.
IF the smaller battery shorts a cell, the larger batter can push current in fast enough to cause problems.. (This is true of vented wet cells too but .. It takes a whole lot longer and a whole lot bigger difference in the batteries and poor ventilation but the BOOM is bigger)
There are folks who will yammer "Oh the batteries won't charge equally and when the smaller battery fills up it will signal the converter to go to float bla bla bla" And with batteries in PARALLEL such as you describe.. THEY ARE NUTS, is all I can say, that very simply can not happen.
Now with batteries in series yes, that is true, but you are not doing that so disregard this paragraph.
You may mix larger and smaller batteries no problem, Under most conditions, so long as they are the same in all other factors (AGM, DEEP CYCLE, AGM STARTING, AGM Marine/Deep cycle) I would mix starting and deep cycle though.
ONE warning... This is something I learned EARLIER today but frankly I should have figured it out on my own..... But I am still learning (Today is a good day, I learned).
AGM batteries gas just like flooded wet cells, the difference is the Oxygen and Hydrogen are re-combined inside the battery.. THIS,,, releases HEAT (I mean if you do it with enough of those two the boom may well be heard some distance away kind of heat, Inside the battery it's done a few molicules (3 to be precise 2 of H2, one of O2) at a time, so there is no BOOM, but there is heat.
And if it happens fast enough, said HEAT can cause a fire.
IF the smaller battery shorts a cell, the larger batter can push current in fast enough to cause problems.. (This is true of vented wet cells too but .. It takes a whole lot longer and a whole lot bigger difference in the batteries and poor ventilation but the BOOM is bigger)
