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| Jimny dual batt size question https://auszookers.com/forum/viewtopic.php?f=5&t=39626 |
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| Author: | PORL [ Sat Mar 16, 2013 7:12 pm ] |
| Post subject: | Jimny dual batt size question |
Whats the biggest 2nd batt I could fit behind the washer bottle after I move it forward? Would I need bigger than a optima d51? Just running the usual off it Radio,amp UHF cb Fridge Awning lights Compresser Cheers |
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| Author: | royce [ Sat Mar 16, 2013 7:23 pm ] |
| Post subject: | Re: Jimny dual batt size question |
Dual battery size is dictated by how long you want to run something from it, not the number of things |
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| Author: | PORL [ Sat Mar 16, 2013 7:29 pm ] |
| Post subject: | Re: Jimny dual batt size question |
I see, thank you Royce How long could I run a fridge and radio off a D51? I know its an ambiguous question, I'm just looking for approx times, Mostly be used for camping. Anyone Using a d51 as a second batt? Experiences? |
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| Author: | upgarage [ Sat Mar 16, 2013 7:39 pm ] |
| Post subject: | Re: Jimny dual batt size question |
Check out the Delkor DC range of batteries DC24 or DC27 might fit Have you worked out what isolator you want to run? My planned setup in the sierra: Redarc SBI12 $88 delivered Jaycar - cable, lugs..etc $20 Wingnut batt terminals $10 pair Delkor DC27 $150 Total $268 for 80AH |
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| Author: | royce [ Sat Mar 16, 2013 7:45 pm ] |
| Post subject: | Re: Jimny dual batt size question |
to my mind 24 hours would be as far as I would go with just your average waeco or engel compressor fridge the radio and amp is hard to say, the battery can supply 41 ah/hrs, pretend its 41 litres the radio and amp might consume 10 ah/hrs, so 10 litres per hour, so in 4 hours youve killed the battery, though it might be 5 or 20, depends on the amp size also its bad to flatten ANY lead acid battery too far, so you really cant use all that 41 litres complex ey 
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| Author: | PORL [ Sat Mar 16, 2013 7:52 pm ] |
| Post subject: | Re: Jimny dual batt size question |
upgarage wrote: Check out the Delkor DC range of batteries DC24 or DC27 might fit Have you worked out what isolator you want to run? My planned setup in the sierra: Redarc SBI12 $88 delivered Jaycar - cable, lugs..etc $20 Wingnut batt terminals $10 pair Delkor DC27 $150 Total $268 for 80AH Where are you getting the redarc and battery from? Thanks Royce that helped heaps |
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| Author: | royce [ Sat Mar 16, 2013 7:58 pm ] |
| Post subject: | Re: Jimny dual batt size question |
If you can fit a battery as big as that Delkor in and have Optima budget look at normal AGM batteries, youll get heaps of capacity then Also a 100w solar panel will help heaps if you are siting still |
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| Author: | PORL [ Sat Mar 16, 2013 8:01 pm ] |
| Post subject: | Re: Jimny dual batt size question |
Great minds think alike Royce, I'm searching solar panels as I type. I'm going to make some cardboard mock batts and see what I can fit. |
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| Author: | royce [ Sat Mar 16, 2013 8:11 pm ] |
| Post subject: | Re: Jimny dual batt size question |
there is a thread somewhere where a dude made up a tray and got a big battery in |
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| Author: | Blakey [ Sat Mar 16, 2013 8:13 pm ] |
| Post subject: | Re: Jimny dual batt size question |
royce wrote: to my mind 24 hours would be as far as I would go with just your average waeco or engel compressor fridge the radio and amp is hard to say, the battery can supply 41 ah/hrs, pretend its 41 litres the radio and amp might consume 10 ah/hrs, so 10 litres per hour, so in 4 hours youve killed the battery, though it might be 5 or 20, depends on the amp size also its bad to flatten ANY lead acid battery too far, so you really cant use all that 41 litres complex ey you will also find that most battery that Ah they can supply can only be supplied if its running at a certain amperage. IE you would think a 50Ah battery could run 10A for 5 hours but say you run it at 50A you would expect 1h but in reality you will get no where near 1h out of the battery. that stated Ah of a battery yes it relates to Amps per hour expected out of a battery but that rating is at a certain discharge current. you will find at lower discharge rates the battery will actually exceed that Ah rating. In other words the higher the discharge rate the Lower the Ah rating of the battery becomes. This is for battery banks but it still gives you a general idea of how to choose a battery http://www.batteryweb.com/pdf/inverter_ ... ng_faq.pdf |
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| Author: | Fatzook [ Sat Mar 16, 2013 8:14 pm ] |
| Post subject: | Re: Jimny dual batt size question |
royce wrote: there is a thread somewhere where a dude made up a tray and got a big battery in Zukenutter and bugsta have both done this. |
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| Author: | upgarage [ Sat Mar 16, 2013 9:33 pm ] |
| Post subject: | Re: Jimny dual batt size question |
As per PM redarc readily avail from ebay for $88 delivered. 3 sellers with same price delkor from yhipower canning vale |
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| Author: | PORL [ Sat Mar 16, 2013 10:03 pm ] |
| Post subject: | Re: Jimny dual batt size question |
Cheers everyone for the replies |
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| Author: | Mike57 [ Mon Mar 18, 2013 6:18 pm ] |
| Post subject: | Re: Jimny dual batt size question |
I have a D51 as the main battery and just got another one as the secondary battery. I have not fitted the second battery yet but I can tell you that it can run a 45 litre Techni Ice Fridge at 3 degrees over night with an ambient temperature of about 25 degrees and still start the car in the morning. |
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| Author: | PORL [ Mon Mar 18, 2013 9:04 pm ] |
| Post subject: | Re: Jimny dual batt size question |
That's pretty good. Any radio time with that? |
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| Author: | Mike57 [ Tue Mar 19, 2013 8:36 pm ] |
| Post subject: | Re: Jimny dual batt size question |
No just the fridge left running in the garage overnight. |
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| Author: | jimmy91 [ Wed Mar 20, 2013 7:53 pm ] |
| Post subject: | Re: Jimny dual batt size question |
i put a optima yellow top D31A in my jimny in the back, have done no more then 5 hours driving since thursday morning and my fridge is still going since then. |
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| Author: | Scales [ Fri Mar 22, 2013 7:44 pm ] |
| Post subject: | Re: Jimny dual batt size question |
Fatzook wrote: royce wrote: there is a thread somewhere where a dude made up a tray and got a big battery in Zukenutter and bugsta have both done this. My rig too. I got a SLA battery in mine, its pretty big physically and barely fits. I run the fridge for overnight and then some without a drama with stereo also, just make sure your fridge low-volt cutout is set right. All my other auxiliary crap runs off it too (inc winch) but I usually have the engine running when any of that gear is on so that really doesnt count. Dont put a deep cycle in if you are considering a winch. they dont like it. EDIT: Did some digging and found my old build thread. viewtopic.php?f=14&t=23684&hilit=dual+battery Just make sure you put big panel washers to reinforce the mounting points. mine ripped out at one stage... she wont again though! |
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| Author: | gvzookdriver [ Fri Mar 22, 2013 9:10 pm ] |
| Post subject: | Re: Jimny dual batt size question |
What size cable does everyone use? And where do you get it from ? |
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| Author: | jimmy91 [ Fri Mar 22, 2013 11:42 pm ] |
| Post subject: | Re: Jimny dual batt size question |
I'm using a projecta kit. It's the $150 one and wiring is 8 gauge |
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| Author: | Scales [ Sat Mar 23, 2013 2:15 pm ] |
| Post subject: | Re: Jimny dual batt size question |
My brother got me some welding cable, works a treat. as for isolators I recommend redarc. SO happy with mine. Zero hassles |
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| Author: | Blakey [ Sat Mar 23, 2013 9:38 pm ] |
| Post subject: | Re: Jimny dual batt size question |
gvzookdriver wrote: What size cable does everyone use? And where do you get it from ? i think most people use about 25sq mm cable. and a good place to get some is springers, they are a solar shop and sell many sizes cable and gear for battery installs. http://www.springers.com.au/ |
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| Author: | Benz [ Sat Mar 23, 2013 9:56 pm ] |
| Post subject: | Re: Jimny dual batt size question |
I have found cable for car amps to be much cheaper. guys at the auto parts shop said it was cheap because the sell so much more of it. It's that really fine stranded stuff and often has a clear insulation. Not sure if it's bad to use it but haven't had any problems with it so far. it's very flexible because of the fine strands but can be pain to solder. |
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| Author: | upgarage [ Sat Mar 23, 2013 10:07 pm ] |
| Post subject: | Re: Jimny dual batt size question |
Jaycar |
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| Author: | Scales [ Sun Mar 24, 2013 4:42 am ] |
| Post subject: | Re: Jimny dual batt size question |
I'd be very very careful about using car stereo cable. The insulation is not as good, and I doubt the conductor is up to the task of delivering that sort of current either. Buy what cable that is designed for the task. |
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| Author: | royce [ Sun Mar 24, 2013 6:42 am ] |
| Post subject: | Re: Jimny dual batt size question |
Scales wrote: I'd be very very careful about using car stereo cable. The insulation is not as good, and I doubt the conductor is up to the task of delivering that sort of current either. Buy what cable that is designed for the task. Umm the whole point of the stuff is so it can deliver a whole heap of amps. It will work just fine but like all cable you must size it properly, 8 gauge would be fine for underbonnet setups with a conventional battery that wont charge fast but if you are using an Optima or AGM then you should run bigger But then if you cant find welding or battery cable cheaper than Amp cable you need to look harder |
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| Author: | Blakey [ Sun Mar 24, 2013 12:00 pm ] |
| Post subject: | Re: Jimny dual batt size question |
Benz wrote: I have found cable for car amps to be much cheaper. guys at the auto parts shop said it was cheap because the sell so much more of it. It's that really fine stranded stuff and often has a clear insulation. Not sure if it's bad to use it but haven't had any problems with it so far. it's very flexible because of the fine strands but can be pain to solder. you will find unless it says OFC on it then its aluminium cable that's copper plated. it cannot carry as much current for size. yes you can use it but you have to be weary of what it can carry most of the time its cheaper cause its not pure copper cable aluminium cable is heaps cheaper then copper if anyone tells you its cheaper cause they sell more is lieing. but you can use it there is nothing wrong with using it. if you go get proper battery cable or welding cable then it is pretty much always going to be pure copper cable. as for insulation size its ~12V the insulation could be extremely thin. the insulation size is mostly for physical protection. also for about 100A you would want to be looking in the cable size area of about 16mm or equivilant of about 5 AWG unless it was under a meter or 2 long then you might get away with 10mm or 8 AWG. With cable your always better going bigger then you need, better to go overboard then to not have big enough. |
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| Author: | Benz [ Sun Mar 24, 2013 1:31 pm ] |
| Post subject: | Re: Jimny dual batt size question |
yeah says OFC. is 4 gauge stuff I guess I didn't look everywhere in town for cable but for me that takes more time then it's worth |
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| Author: | Benz [ Sun Mar 24, 2013 1:31 pm ] |
| Post subject: | Re: Jimny dual batt size question |
double post... |
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| Author: | Scales [ Sun Mar 24, 2013 2:52 pm ] |
| Post subject: | Re: Jimny dual batt size question |
I realise about the amperage in the car stereo world Royce... However my main point is that you buy the correct tool for the job. My neighbor has used AMP cable for his battery relocation on his xr6 ute (back into the tray). Had it there a few weeks and its already showing signs of insulation wear. The cable could be cheaper because they source it from cheap chinese importers maybe? Is it REALLY ofc? Chinese rules are a bit less stringent on that sort of thing. Your choice of course. I know what I would be doing/did do. Would hate to see an engine fire. |
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