Hi!
Been doing a few bits and pieces, fitted a new battery:
Got it from RAC online, very cheap @ £39 inc delivery. 3 yr warrenty and they come to you if it goes wrong. It's a higher aH than stock, with better CCA, fits fine, though check with terminal is + as mine was the other way round due to some random american battery which was fitted, over 3 years old and never checked, was starting to sound slow when cranking. Was looking low on acid when i looked in one cell, may keep for a back up project with a solar panel for a light in the garage.
http://www.racshop.co.uk/car-battery/product/bosch-s3-car-battery-065-075.html" onclick="window.open(this.href);return false;
I have bought some blue LED panel meters to monitor voltage at the fridge lesiure battery supply, and to monitor fridge temperature output.
http://www.ebay.co.uk/itm/370626378265?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649" onclick="window.open(this.href);return false;
http://www.ebay.co.uk/itm/370629991656?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649" onclick="window.open(this.href);return false;
These will fit on a flip down panel, just under the gas hob, behind the drop down door.
Also, i have been trying to do some homework on leisure batteries, and have gone down a different route to what i have seen anyone else using I think. I will be using 2 6V flooded wet batterys linked together to form 1 12V bank. I am using Trojan deep cycle traction batterys, used in golf carts and similar. Here they are:
http://www.alternativeenergystore.co.uk/trojan-t605-6v-deep-cycle-battery.htm" onclick="window.open(this.href);return false;
You can see the size of them compaired to the Bosch starter battery. :shock: These will fit under the rock and roll bed next to the propex, I just need to move the inverter somewhere else, and finally fit the mains hookup, though to be honest, i dont think i am gonna really need it, unless i go for option 1 (see below)
Now, the reason for going with these is that a normal leisure battery, even a deep cycle leisure battery has a life cycle of max 500 cycles, these Trojan's have at least 1000 cycles, and where about the largest ah leisure battery is 125, which ore over £100 quid each, i paid £65 each for these Trojan's, with the added benefit of ultra deep cycle and recharge over a normal battery - plus these are rated at 210aH !!! MASSIVE !!!
I still have some more research to do on the charger system i want to use, here are a few things i have found, but i am in 2 minds to go for this:
http://www.seapost.co.uk/sterling-ab1280-special-price---digital-ab-1280-alternator-to-battery-charge-booster-416-p.asp" onclick="window.open(this.href);return false;
Also would like a monitoring device to add to the system like this:
http://www.marinesuperstore.com/posit/shop/index.php?selectedpartno=99197803" onclick="window.open(this.href);return false;
This is cheap:
http://www.ebay.co.uk/itm/300735242790?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649" onclick="window.open(this.href);return false;
I would like some kind of battery monitoring device and control, i'm in 2 minds to just get a basic split charge system and use something like this:
http://bluesea.com/productline/specs/387" onclick="window.open(this.href);return false;
On ebay here:
http://www.ebay.co.uk/itm/Blue-Sea-7610-ACR-Automatic-Charging-Relay-Voltage-Sensing-IP67-12-24V-BlueSea-/310347723938?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item48422a74a2" onclick="window.open(this.href);return false;
Or this:
http://www.vanbitz.com/battery-master-1-p.asp" onclick="window.open(this.href);return false;
http://www.yandina.com/c100InfoR3.htm" onclick="window.open(this.href);return false;
http://www.ebay.co.uk/itm/110828967152?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649" onclick="window.open(this.href);return false;
And this:
http://www.ebay.co.uk/itm/0-727-33-DURITE-12V-140A-SPLIT-CHARGE-INTELLIGENT-RELAY-/110747372068#ht_564wt_698" onclick="window.open(this.href);return false;
This set up is cheaper, but from what i understand the batterys i am using may need a more specialist charging system to maximise there capacity.
Sterling power products do a DC to DC system, with takes over the alternator power, increases the voltage to around 14.8 (IIRC) and uses a multi stage charging programme to charge the bank up, similar to a multi charge unit you would have at home.
So, do i just get:
1) Decent split charge system, and a home charger for the batterys when needed. Because of the high capacity, and the engines split charge, in theory they will only a top up and condition? Though this depends on how flat i run them....
2) DC-DC system with split charge and multi stage charging, no extra charger needed, but relying on the alternator output? But supposed to use the alternator output max current, like 50A say, so will charge much quicker than a standalone charger, and all self contained, on totally off grid, which is what i really want. Like the Sterling AB1280.
3) Also, to add to this, i want to get a solar panel set up, and use this to charge both banks, i have my eyes on a dual setup up with remote monitoring of the charge:
http://www.ebay.co.uk/itm/180790063442?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649" onclick="window.open(this.href);return false;
http://www.ebay.co.uk/itm/110877737967?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649" onclick="window.open(this.href);return false;
Or this:
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=120963565171#ht_4263wt_908" onclick="window.open(this.href);return false;
I was intending to fit the panel onto the rear luggage rack, but after our trip to the music festival the other week, i think it's more useful as rack space for the radio flyer if nothing else. So, may fit a larger panel onto the pop up roof, at least this way i can raise the roof to get the best sun for the panel, and a large capacity panel would obviously help with charging, still trying to accurately work out the sun hours in the UK, though i suspect a larger output panel may help with the lower sun levels here in the UK.
Now, i think i may get rid of my Zig unit, as i may just use the inverter for mains, and the Zig isn't man enough to fully handle the Trojans. This will allow me to use a switch bank like this maybe:
http://www.seapost.co.uk/3-switch-panel-with-battery-guage-and-cigar-lighterpower-take-off-point-1618-p.asp" onclick="window.open(this.href);return false;
And i will also have the battery control meters housed in place of the zig under the bed where my 240V sockets and propex outlet are. Once i had decided where i am going, i will redo the power feed to the fridge for a thicker cable maybe, though i think it's ok.
But i think i want a heavy duty fuse bank and distribution unit so i can run the fat power cables to and from the batteries, and use this as a common point for earths etc. I am still looking for a suitable unit, spent all my time trying to research the charging system, so will look for this a little later.
Will be looking into venting these batteries, or fitting into boxes, as they will vent gas when charging, don't know if this will be a problem or not.
Useful reading and inspiration on this subject found in these sites here:
http://deepredmotorhome.com/electrics.php" onclick="window.open(this.href);return false;
http://www.westmarine.com/webapp/wcs/stores/servlet/WestAdvisorView?langId=-1&storeId=11151&catalogId=10001&page=Marine-Wire" onclick="window.open(this.href);return false;
http://www.motorhomefacts.com/forum-83.html" onclick="window.open(this.href);return false;
http://sprinter-source.com/forum/showthread.php?t=19562" onclick="window.open(this.href);return false;
http://caravanersforum.com/viewtopic.php?f=2&t=12915&start=60" onclick="window.open(this.href);return false;
http://sprinter-source.com/forum/showthread.php?t=17258" onclick="window.open(this.href);return false;
http://www.thesamba.com/vw/forum/viewtopic.php?t=330009&start=0" onclick="window.open(this.href);return false;
http://www.motorhomefacts.com/forums-viewforum.html" onclick="window.open(this.href);return false;
http://www.solar-electric.com/electrical.html" onclick="window.open(this.href);return false;
http://www.google.co.uk/search?sourceid=chrome&ie=UTF-8&q=4+AWG+Marine+Battery+Cable" onclick="window.open(this.href);return false;
I'll post up some more details as i progress along
Cheers!
Alistair