Saw a post that mentioned a secondary battery for an L322, so i did some digging and found this yootoob..
Doesn't look safe to me?? Why don't the wires melt if you have s suitably discharged main battery?
Seems like a bad idea to me!! Better off fixing the problem
Doesn't look safe to me?? Why don't the wires melt if you have s suitably discharged main battery?
Seems like a bad idea to me!! Better off fixing the problem
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@backinblack installed a second battery and made a betterer job than that. I think thats actually a mess
. All red wires.Not sure it would try and start from that battery as its control relay may not bring it in if the main 1 is flat.
Do you need? maybe to run his bloody stereo and speakers
.J
i couldnt watch the vid, he suffers from verbal diarrhoea@backinblack installed a second battery and made a betterer job than that. I think thats actually a mess
Not sure it would try and start from that battery as its control relay may not bring it in if the main 1 is flat.
Do you need? maybe to run his bloody stereo and speakers
J
possibly because he knows its bollox the idea is, turn key to 'on'/position2, relay trips and connects the 2nd battery to the rear fusebox. seems to me if the vehicle batt is flat, it'll take as many amps as it can until the wire melts or the fuse blows
Yeah, that's about 6 months of bills for a Land Rover.
Salisbury Nick
Well-Known Member
I’m joining this topic later- but i don’t understand - why do you need a second battery? Surely, if the main one is dead, replace it. If it keeps being dead you have a bigger problem to fix?i couldnt watch the vid, he suffers from verbal diarrhoea
the idea is, turn key to 'on'/position2, relay trips and connects the 2nd battery to the rear fusebox. seems to me if the vehicle batt is flat, it'll take as many amps as it can until the wire melts or the fuse blows
Salisbury Nick
Well-Known Member
sorry. not later, just late!
i dont either, replace the knackered battery with a new (
it just seems like a complete fudge off someone who doesn't really understand what they're trying to do
Datatek
Well-Known Member
I suspect there will be a blocking diode or a split charging device between the 2 batteries. I have not bothered to look at the vid.
There's not.. it's just a regular relay piggybacking a switch live fuse
then connecting the battery to the main positive line coming from the front
Datatek
Well-Known Member
So how is the relay operated? I suspect that it constitutes a split charging system, not a very good one admittedlyThere's not.. it's just a regular relay piggybacking a switch live fuse
Piggybacking a fuse in the rear fusebox, closes when the fuse lights up. Don't know what the rear box covers but maybe audio etc
Datatek
Well-Known Member
So the second battery is only connected to the main battery when the relay energises? That would be a typical if obsolete split charging arrangement.
my concern is whether the cable powering the rear fuse box is sufficient? ie.. flat battery 11.5v relay energises.. try to start the car and most of the amps are going to come from the second battery
Datatek
Well-Known Member
Without looking in detail, I would expect that the relay would not energise in that situation. The question is, what causes the relay to energise?
I thinks it's pretty much the same as mine with the relay energised by a switched live from the main battery. Not sure what voltage/current a relay needs to energise but I would guess it's not much.
Agreed. Don't know if all model years are the same but I read that it's a 40A cable feeding the rear fuse box so I'd say something may well pop if trying to jump start from it.
I put a 20A solar panel regulator in to limit current draw to second battery and protect from reverse current if the main battery is low. I also carry a long pair of jump leads so I can jump from the second battery but haven't had to use them............yet.
And all red wires
no mention of what size the bigger fuse is, cable looks a bit on the thin side, think he needs some lessons in electrickery You could have been one of them making all that noise near me then, spoiled my after noon nap it did !I drove mine to shooting today. Needed another top up and the rural fuel station only had super+
