Originally Posted by fkloster
Pondering this set up for house batteries....:
6 (six) Lifeline 6-Volt AGM model# "GPL-6CT" to fit on an 8D house tray.
3 sets of 2 bats in Serial/Parallel configuration. (each batt rated @ 692 minutes reserve using 25 amps... only the imagination can wonder how long it would take to run this bank into the ground...)
Would have 'wicked' reserve time imho. Ideas or opinions?
(albeit this is an EXTREMELY spendy setup i.e. $2,100 bucks just for the house batts.... but for boondocking? would there be a better setup?)
i got my pair of gpl-6ct's from bd batteries online. their price includes shipping.
these batteries weigh 90# each. can your battery tray handle the weight?
each battery has 300 ah capacity. if you discharge them more than 50% (12.2v), you will shorten their life.
if you take care of them, lifeline batteries will last about 10 years.
realistically, your series-parallel hookup would have 450 ah to use before recharging.
you need to make a chart of your 12v users, including how much your inverter draws, to see how long your battery bank will last before recharging is necessary.
my system lasts about 1 day when using the propane furnace (11.5 amps), lights, and the 2 inverter powered tv's, dvd-vcr recorder-player. that is about 150 ah.
when calculating how much current your inverter draws for appliances, divide the wattage by 10 instead of 12v to account for conversion losses. eg: 300w = 30 amps power draw from your battery bank. that is about what my inverter uses to power my entertainment system.
i find that it is better to idle the moho engine and use the 145 amp alternator than to run the genny and use the 45 amp converter-charger to recharge the batteries.
if we need to use the microwave or run the ac, we run the genny.
the amount of fuel consumed per hour is close to the same with the engine or the genny.
check these resource, have fun reading.
SmartGauge Electronics - Interconnecting multiple batteries to form one larger bank
Batteries -- and Other Electric Stuff by phred
The 12volt Side of Life (Part 1)
Deep Cycle Battery FAQ
Frequently Asked Questions (FAQ) - DC Battery Specialists
Lifeline GPL-6CT Battery