AuthorTopic: How long will Alarm take to drain Battery?  (Read 2188 times)

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Offline John Clayton

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How long will Alarm take to drain Battery?
« on: April 07, 2010, 14:29:55 »
My '94 Disco 300 TDI has a factory CATS Alarm and Immobiliser on it, complete with flashing red LED (and red LED on radio cassette).  It appears to trickle-drain the battery over time and I understand this is a common fault with Jags and Land Rovers of this age fitted with CATS. 

As a result I've fitted a DisCarNect device to the battery lead so the power can be cut off when the vehicle's not used for more than a few days

Has anybody else experienced this problem or know how to fix it?
How long will the battery last before it's no longer able to start the vehicle?
ClaytonMotorsport.co.uk
ChristiansInMotorsport.org.uk

Offline mike142sl

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Re: How long will Alarm take to drain Battery?
« Reply #1 on: April 07, 2010, 19:00:24 »
Don't know exactly, but a couple of years ago I ended up with a flat battery over the winter months after a week so I fitted a small solar trickle charger from Maplins which seems to have solved it.
Mike
Disco TD5 Landmark
SYM GTS250i Voyager
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Offline LiftedDisco

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Re: How long will Alarm take to drain Battery?
« Reply #2 on: April 07, 2010, 19:59:27 »
Discovery 300 Tdi - 2" lift, side exit exhaust, HD bumpers, T-Maxx 9500, removable tow hitch, snorkel and 235/85's

Discovery 4 Commercial - very standard but very nice!

Freelander 2 TD4 - Fun Prevention Officer's

Offline sMUDge

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Disco Ser 2 V8

Handle every situation like my dog does, if you can't eat it or hump it, wee on it and walk away......

Offline John Clayton

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Re: How long will Alarm take to drain Battery?
« Reply #4 on: January 10, 2015, 15:56:41 »
Actually I think that CATS [Computer Anti Theft System] is actually referring to the 'code' needed for the Stereo [rather than the alarm]
ClaytonMotorsport.co.uk
ChristiansInMotorsport.org.uk

Offline Range Rover Blues

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Re: How long will Alarm take to drain Battery?
« Reply #5 on: January 12, 2015, 10:59:55 »
It can be as little as a couple of days, especially this weather.  My sister's ended up with a split charge system, the car running from a leisure battery that is designed to be flattened and the starter running form the original battery.  It's easy to do without cutting any of the original wires on a TDi, you just need a 3 some battery wires, a short battery link and a 100 amp relay (like X-ENg sell).
Blue,  1988  Range Rover 3.5 EFi with plenty of toys bolted on
Chuggaboom, 1995 Range Rover Classic
1995 Range Rover Classic Vogue LSE with 5 big sticks of Blackpool rock under the bonnet.