Why is 6v batteries in series to make 12v so common? Why wouldn't one just get a 12v to start with, half the space... what am I missing?
Also to get the equivalent ampacity in 12V, the battery would weight 120+ lbs rather than 60+ lbs for 6V. Moving the 6V batteries around is not so challenging as moving 4D or 8D equivalents.
Isn't a 12 volt battery just six 2 volt cells rigged in series inside the case?2v will require a bunch of jumper cables or links. Lots of connections.
Isn't a 12 volt battery just six 2 volt cells rigged in series inside the case?
You would and that's why I wouldn't use 2v batteries and reinvent the wheel. GC yes, because of the weight.Yes, but you don't have to buy and install the cables and maintain the connections.
What kind of batteries of batteries are those? ^
The top vendors have excellent 12V batteries that last as long as the lower-voltage equivalents. It's not an inherent difference.6V are preferred over 12V as the internal spacing allows for more lead, and fewer spacers.
In a mass retail context, they are all that's available in true deep cycling, and yes those Sam's Clubs are lowest up front investment.Also the 6V golf carts are made in higher numbers, so are cheaper, per amp hour.
Even strictly from a practical POV, there are scenarios where investing in a top-notch more expensive bank is worth it financially.
You need to be able to afford the up-front of course.
And you need the usage pattern, knowledge and infrastructure in place to ensure you're getting the extra longevity you're paying for.
If you're not sure of the latter, Sam's GC2 is way to go.
Sounds like some of you guys are changing out your batteries every month. The true industrial batteries easily go 10-15 years or more, rated 80% at 18 years for example. So perhaps it's worth having high quality even if it weighs 160 lbs.