[QUOTE=ReaPerMan;792299]Here's one at BCF (boating Camping Fishing)
http://www.bcf.com.au/online-store/p...81#Description
Caution this battery is a starting battery, for prolonged slow discharge you need a storage battery like this:
http://www.centurybatteries.com.au/s...tteries/ID-216
I have been using Century N70T (100Ahr) as the aux battery in my 4WD for 10 years (first one lasted 6 years). Normally for car fridge and boat winch.
Battery management by TJM IBS controller. With this system the N70T can be selected to start (my 3L TD), but only if fully charged and for emergency use only. I have done it once only to test the system.
As Brendan said, Gel, AGM and storage batteries require 3 stage chargers
like his Ctec or equivalent. They can also be charged by solar panels also through correct type regulator.
FYI I am planning a remote site power system using one of the Honda copy 1.5KVA inverter generators (18Kgs) run time 4.5Hrs via a UPS (Eaton PW 5110 1500 990Watts). All up approx AUD 700. Doubles for camping power.
http://www.ebay.com.au/itm/MTM-Inver...item2567bd69ab
http://powerquality.eaton.com/ups/5110-specs.asp