I'm thinking of building in one of those Lidl battery chargers in the old
car. So it can be left on float when not in use. The mains lead on those
is only two core and the case plastic. I was considering a Buccaneer
weather proof mains connector mounted in the body below the rear bumper.
Should the car body be connected to mains earth?
*Always borrow money from pessimists - they don't expect it back *
Dave Plowman email@example.com London SW
No. If the battery charger is double insulated, then the only issue is
preventing the chassis becoming live from a fault on the mains cable.
Cover the mains lead in plastic conduit and ensure that it can't chafe
or snag on anything. Make sure you plug in to an RCD-protected supply.
That's what I have done.
My Halfords 'maintenance' charger came with both croc clips and also a
set of flying leads that could be permanently bolted to the battery
terminals with an in-line shrouded connector that matches the one on
the charger. So to do a trickle charge, I simply open the bonnet and
quickly hook up the flying leads to the charger. A red/green led
indicates when the battery is fully charged.
The extra-low voltage option would be by far the safest solution. If
you really do want to put a 230v mains supply into the car then use a
3 core flex with a trailing socket and a 3 pin mains rated connector
at the car end. Earth the car via the earth pin of the connector.
Also use a supply with 30mA RCD protection (which all sockets rated at
less than 20A, intended to supply equipment for use out of doors
should have for additional personal protection in the event of a fault)
On Wed, 16 Dec 2009 04:39:49 -0800 (PST), Andy Dingley wrote:
How about a nice hefty battery cable to a proper Anderson connector? You
can keep only the low voltage on the car then and there'd be next to no
voltage drop on the extra length of cable with the low current of a charger
and the large CSA. You'd also have the added bonus that you could use the
connector for a plug in set of jump leads. I keep meaning to get around to
doing this on my kit-car.
I do it the other way around...
Lidl charger is in a bracket, up in the garage roof, with a 12v cable
fitted with a ciggy plug dangling down to car. As I park, I pull the
ciggy plug in and plug it in. The ciggy socket has to be the type which
is on all the time, which depends upon the car.
How about "dodgem car" style.
Park one wheel on a metal plate and some kind of ceiling contact. Ground
the plate as well.
I've got no idea how many ohms a tyre would present in circuit...but surely
a small enough figure to trickle charge a battery?
Many many years ago when I had a vehicle with an unreliable battery I
did something like that. Two radio aerials on the car roof one
connected to + other to the body work. Hanging in the garage a couple
of wire coat hangers stuck in a wooden beam and connected to the
aerials touched hangers and connection made without faffing around
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