Is Data Tool alarm draining my battery?

ACM · Derestricted Danger Joined: 18 Jul 2013 Karma :

Still having problems starting my 2year old Bandit1250GT and was wondering if its the alarm which is causing my sluggish starting.
The battery was completely flat recently and i called out breakdown to tow me home. Bought new battery but still having problems starting.
Anybody else experienced this?
Any advice would help.
Cheers

Islander · World Chat Champion Joined: 05 Aug 2012 Karma :

The first thing to check is that the charging circuit is working correctly. You'll need a multimeter for this. Measure the voltage at the battery terminals with everything off and you should see around 12-12.5v. Now start the engine and measure the voltage with the revs up to 4-5k. You should see around 14v. If it's much less or much higher then you may well have a reg/rec fault.

ACM · Derestricted Danger Joined: 18 Jul 2013 Karma :

Kaph · Nitrous Nuisance Joined: 03 Oct 2009 Karma :

In direct answer to your question, the alarm will be draining the battery. If you're not using the bike regularly then this may well result in a voltage drop.

Having said that, if you're using your bike regularly and the first battery has gone dead and the second battery's voltage is below normal, then it's likely as suggested it's not charging correctly.

janner_10 · World Chat Champion Joined: 26 Sep 2011 Karma :

If you connect your new multi-meter inline on the +12v (ie, between battery +ve terminal and the red lead normally on it) it will show the current the alarm is pulling.

Should be a consumption figure in the manual - although I doubt if it is the alarm itself - as said more like the batt isn't being charged.
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Pete. · Super Spammer Joined: 22 Aug 2006 Karma :

I have heard of the instrument cluster putting a draw on the battery when parked up. It does have a permanent live to it so it could be a possibility.
Otherwise, the alarm could be drawing above it's standby current.
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andys675 · World Chat Champion Joined: 08 Feb 2007 Karma :

yes I have experienced this and it was the starter motor, it's a common-ish problem with this model, battery acted like it was flat and engine turned over slowly
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Wafer_Thin_Ham · Super Spammer Joined: 18 Nov 2005 Karma :

Maybe, IME Datatool's tend to be pretty good if fitted correctly.

IME check it's charging first, then check your battery is holding charge. If both of these are spot on, then investigate your alarm.
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ACM · Derestricted Danger Joined: 18 Jul 2013 Karma :

lihp · World Chat Champion Joined: 22 Sep 2010 Karma :

Disconnect battery earth, connect via multimeter while measuring mA and you will know whether theres an issue with something draining the battery while parked.

If it's excessive then disconnect things 1 at a time, clocks etc to see which item it is.

Though, it is also likely to be a charging issue, especially if it's going flat soon after riding.
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ACM · Derestricted Danger Joined: 18 Jul 2013 Karma :

Islander · World Chat Champion Joined: 05 Aug 2012 Karma :

Any use?

https://www.ebay.co.uk/itm/Suzuki-GSF-Bandit-1250-starter-motor-/231020798278?pt=UK_Motorcycle_Parts_13&hash=item35c9e9a146

andys675 · World Chat Champion Joined: 08 Feb 2007 Karma :

sorry about that, if the answer is no don't give up there, time for a stinking letter to suzuki GB, fit for the purpose etc etc

I've never owned a 1250GT, but I knew about the starter problems!
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