Does 24V Batteries Exist?

hmong2017

I was looking to upgrade my 12V batteries Ampere Hour, but my friend told me to get a single 24V battery with bigger amperage. 
I looked basically all over the internet for 24V batteries and they just don't seem to exist. 
I asked him again and he said a solar company gave him a quote and it includes 24V batteries.... Not sure if it is even true... 

So does these 24V Batteries exists? If so are they just only sold by commercial solar companies for homes or where can I find them? 

I have a 24V System Set up. 
breakdown:
6 of 260 WATT Max 30V 
midnite Combine Box with 6 breakers
MPPT 80A Controller
5000 WATT Power inverter 24V
and 6 of 12V 100Ah Deep Cycle Universal Batteries TYPE AGM Sealed Acid 
I parallel them to make 24V.  Connect two batteries to make it 24v. So basically I only have 3 battery...... 

mike95490

24v batteries exist for small applications, like alarm boxes and such.  But for serious energy, you should be looking at

6V 200ah batteries - 4 of them in series gives you 24V @ 200ah and no parallel strings.

need more power, go with L16 AGM and get 370ah

mike95490

GC2 AGM  @ 200ah

or

L16 AGM @ 370ah    Wire 4 of them in series, get 24V at 200 or 370 ah

Photowhit

In truth, no flooded lead acid battery is higher voltage than 2.1... volts. A 6 volt golf cart battery is actually 3 - 2 volt nominal batteries in series. a 12 volt 'battery' is 6 batteries 'hard wired' together.

So find the number of amp hours you need and feel free to string 2-12 volt 'batteries' together or 4 - 6 volt 'batteries' or 12 - 2 volt 'batteries'

Picture of 2 volt cells/batteries strung together;

Photowhit

hmong2017 said:

6 of 260 WATT Max 30V 
midnite Combine Box with 6 breakers
MPPT 80A Controller

This is a problem, Looks like you plan to have 6 panels in parallel, since they have a 30v (VMP?) they will not work well with an MPPT type charge controller all in parallel to charge a 24 volt battery bank. Use strings of 2 or 3 so the MPPT type charge controller will have at least 30% higher voltage than the charging voltage, for a 24 volt battery bank, that's 28-30 volts. In strings of 3 they will work somewhat less efficiently, but you would not need a combiner box. Check they might have too high a VOC in a string of 3 butunlikely on most charge controllers.

oil pan 4

I saw a marine deep cycle battery not too long ago that was 24v.

Estragon

All lead acid batteries are nominal 2v cells. 6 cells = 12v. There's no reason why a battery couldn't be 24v (12 x 2v cells), but the cells would have to be fairly small for the battery to be easily moved by hand. Anything bigger than 150-175 amp-hours gets too heavy at 12v, so 1/2 that (~75-90ah) would be about a practical limit for 24v.

I imagine a 24v marine battery would be a bit of a specialty item, and putting 2 x 12v batteries in series would work fine and be cheaper for most applications.

Either way, it's 12 x 2v nominal cells connected in series. There's no such thing as a single 24v lead acid cell.