AJ452 said:
From respected solar supplier Northern Arizona Wind & Sun,
https://www.solar-electric.com/learning-center/batteries-and-charging/deep-cycle-battery-faq.html :
Exide never uses the phrase deep cycle in any of their literature with respect to the golf cart batteries.
{snip}
There can only be one reason for that - because they're not.
Just because a battery is labeled "golf cart" it is not necessarily deep cycle. It just means it's a certain size.
{snip}
It seems to be a common assumption that they would be deep cycle for a golf cart application but at the end of the day that is still only an assumption, isn't it?
I specifically said SIX VOLT golf cart batteries. Read that again...SIX VOLT. Again, SIX VOLT golf cart batteries.
With all due respect to NAWS, true golf cart batteries come in a
range of sizes and capacities, and in 6v, 8v, and 12v ratings.
I will say this again: SIX VOLT golf cart batteries are (or should be) deep cycle. Adding the words 'deep cycle' to a SIX volt golf cart battery is redundant, but they do it in some cases since consumers may not know that they are ALL essentially deep cycle in that voltage rating, and because RVers often look for the words 'deep cycle' when they go shopping for 6v batteries.
There is likely no reason to make a 6 volt battery for 'starting' an engine. (yes it can be used that way in series with another 6v battery but that is not the intended use, other than starting a small genset in an RV)
Since golf cart batteries are also available in 8 volt ratings, and in a variety of sizes, I seriously doubt that an 8 volt battery would be a starter battery. It should also be deep cycle whether that is printed on the label or not.
And yes,
GC2 is a spec for size, but I did not say GC2, I said and was referring to the broad category of
6 volt golf cart batteries.
You can find this information in lots of places.
Here are a few:
https://www.golf-carts-etc.com/golf-cart-batteries.html
https://www.interstatebatteries.com/recreation-vehicles/golf-cart-batteries
https://batteryasking.com/best-golf...s-and-gas-golf-carts-need-different-batteries
And here, you will notice the Optima TWELVE VOLT (12v) golf cart battery IS a starting battery...because it's 12 volts and STARTS a gas engine golf cart:
https://batteryasking.com/best-golf-cart-batteries/#best-golf-cart-batteries-6-volt
https://deepcyclebatterystore.com/golf-cart-battery/
Exide list several sizes of golf cart batteries: GC2, GC8, GC-110, GC-135, GC-145, GC8V-110, GC8V8-118, and CG26, that last one being a 12v starter battery. Other than the 12v starting battery, these can all be considered 'deep cycle'...although they have differing capacities and prices.
https://www.exide.com/us/en/product/exide-xtra-golf-cart
Trojan also list several golf cart battery sizes: J305P-AC, T-105, T-125, T-145, T-605, several 8v golf cart batteries, and even a few 12v golf cart batteries:
https://www.trojanbattery.com/markets/golf-utility-vehicle/
So, depsite what NAWS says, golf cart batteries are NOT all one size... golf cart batteries are a range of battery sizes designed for deep cycle golf cart use.
Again, to be clear, a
SIX volt golf cart battery of any size or dimension or identifier, normally available off-the-shelf, is, or SHOULD be, deep cycle.
And again, capacities, warranties, and prices will vary.