That is very interesting information about British Vehicle Batteries. I'd be willing
to bet money that there is some kind of GB government mandate insisting on
deeper discharge cycle life for batteries in British vehicles, possibly stemming
from WWII. I will keep an eye out for the reason and post under this subject
here if I find out. I know I looked at using a Hawker Sidley Battery called "Deep
Strart" Batteries kind of a mixture of deep cycle and starting. These certainly can
exist. So that is suggestive. I think Stephen was referering to 2 years in an
average solar or other electronic application. I also think the auto batteries track
an average 7 year car life pretty well.
I am continually suprised at how South Africa internet .za web sites mention
.us battery supliers. I suspect it is due to their mining intensive economies
use of equipment batteries that is what requires this.
You have to get above 55Ah Ampere Hour before batteries "differentiate"
into type for various uses. Those grey Gell Cell and Plain Black Ultimate Batteries
are smaller capacity than 55Ah and I've found them uniformly terrible.
Batteries Recommened are often Golf Cart Batteries because they can take
physcial and charging abuse.
Schedule some time and play with the following Web Site; prices are in AUD$
Click on battery type numbers to display battery specs. I don't
necessarily advise buying from here - but I like the icons for educational
purposes note that down the list the "Start" icon eventually goes away.http://www.federalbatteries.com.au/batteries/
To find the Specification Sheet of batteries go to the Web Sites and download the .pdf files.
Company: *Trojan* - High Quality Highest Specialty Battery Supplier, You probable use them.http://www.trojanbattery.com/
Company: *Rolls Surrete* - Highest Quality Batteries - You'll Use these if you have got a little more
They have the widest Range of 2Volt lead/acid cells capacities. They build
acid/lead batteries for military submarines.
I found a battery that is a deepcycle (marine trolling battery) that has a price and capacity
similar to a automotive battery US battery part#: 27dcxc 12V 85Ah $140.00USD
Selected this mainly because it was lighter then the large trojan battery.
Use Google to find these web sites. Then use Google again with the test "for sale" to
Outliers Batteries to study:
Company: Optima Blue Top - Extremely low resistance and very high recharge rates. Custom chargers.
Company: Chinese Crystal Beta Battery - a better lead/acid battery There's one UK
supplier (of UPS equipment) (No suppliers at all in US!) If these are not fakes they are the
best batteries to use. See youtube.com for a person running a test of this battery vs
a starting. He says he sees a reduction in capacity with only 4! abusive deep cycle
discaharges in the starting battery.
Company: "X" Extreme 6000 Ampere. For mixed supercapacitor type applications super specifications
and is super expensive.
-> You will find that battery costs are proportional to the amount of lead metal they
contain big batteries are heavy! from 200->300LBS. Must consider shipping cost.
For example the best deal on a Trojan Deep Cycle 12Volt @ 240Ah battery was $236.00USD
this battery is like 3 to 5 times the Ah capacity of an automotive battery. This was like
Select 12VDC, 24VDC, 36VDC, 48VDC your LV solar batter bank voltage. The higher the voltage
the lower the max current. I'd start at 24VDC because there are chargers and inverters for
24Volts. That would put 2 x 12Volt batteries in series everywhere. I got like $7000 USD
for a minimum acid/lead set-up, to not abuse the batteries due to discharge depth you
will need 2 or 3 times this and 3 times is too expensive. Same HV lithium battery is like
$5000 with EV wearout curves.