Electrical question

[Stujw70]

Quick question for those that understand electrics better than me.

I have a 05 1150GS Adv

Bike starts and runs fine in the last week in the low temps.

I have been using a Klan heated waistcoat which apparently draws 3.5amps (42watts @ 12v) via the lower accessory socket and occasional use of the lower setting of heated grips.
Lighting is 1x HID, normal side light and a LED rear.

But yesterday evening whilst heading down to South London after work and when stopping at lights the bike stalled a few times and on one occasion the clock reset.

Could it just be a case of the bike is overloaded at idle? or a early sign that the battery is showing it's age.

Cheers

Stuart

Edit, to note

The bike had been laid up from Mid dec until last week with occasional charging with Optimate, but started first time no probs after the lay up.

 

[Steptoe]

.

But yesterday evening whilst heading down to South London after work and when stopping at lights the bike stalled a few times and on one occasion the clock reset.

Could it just be a case of the bike is overloaded at idle? or a early sign that the battery is showing it's age.

.

One very important detail you've omitted to tell...

Servo brakes ???? Brakes applied while stopped at lights ? = huge power consumption.

 

[Stujw70]

One very important detail you've omitted to tell...

Servo brakes ???? Brakes applied while stopped at lights ? = huge power consumption.

Thanks Neil, had not even thought of them but Yep servo brakes

But don't recall any of my other previous 1150's with servo brakes having a similar problem with much the same set-up and in those days i had things like BTBR lights aswell

 

[AberdeenAngus]

Could it just be a case of the bike is overloaded at idle? or a early sign that the battery is showing it's age.

Both. Is this the original battery ?
5 years is quite old for a battery.
Its probably not got the same capacity as it once did.

 

[Stujw70]

Both. Is this the original battery ?
5 years is quite old for a battery.
Its probably not got the same capacity as it once did.

Hi

Not the original 05 battery, new OE approx Nov/ Dec 08 if i remember correctly.

I have just bunged it on the optimate today as i am off, so shall see if it comes up with any faults.

 

[chad]

Hi

Not the original 05 battery, new OE approx Nov/ Dec 08 if i remember correctly.

I have just bunged it on the optimate today as i am off, so shall see if it comes up with any faults.

daft question stu but the terminals are nice and tight i assume

 

[Stujw70]

daft question stu but the terminals are nice and tight i assume

Yes mate, checked them earlier just in case

 

[Stujw70]

I have just put my one of these Ring battery testers on the bike, not as good as a proper voltmeter but mine is dead.
http://cgi.ebay.co.uk/ws/eBayISAPI....31152&_sacat=See-All-Categories&_fvi=1&_rdc=1

I had to test everything via the auxillary socket but the battery showed 12.4v ignition off,
12v ignition & lights on,
idling 13.9v,
dropped to 12.5 idle & servo brakes,
idle & heated jacket 13v, idle,
brakes, jacket, h/grips = 12.v

When the bike was loaded the volts dropped and picked up and stabalised ok to the figures above and when revved the figures increased, so i presume this shows the alternator is fine.

Shall keep a eye to see if it happens again

 

[chad]

I have just put my one of these Ring battery testers on the bike, not as good as a proper voltmeter but mine is dead.
http://cgi.ebay.co.uk/ws/eBayISAPI....31152&_sacat=See-All-Categories&_fvi=1&_rdc=1

I had to test everything via the auxillary socket but the battery showed 12.4v ignition off,
12v ignition & lights on,
idling 13.9v,
dropped to 12.5 idle & servo brakes,
idle & heated jacket 13v, idle,
brakes, jacket, h/grips = 12.v

When the bike was loaded the volts dropped and picked up and stabalised ok to the figures above and when revved the figures increased, so i presume this shows the alternator is fine.

Shall keep a eye to see if it happens again

when sitting at the lights are you using the rear or front brake as front will keep the servo activated drawing the power whilst with the rear the servo will shut down after a few seconds to stop the draw on the battery
though im pretty sure you already know this

 

[Stujw70]

when sitting at the lights are you using the rear or front brake as front will keep the servo activated drawing the power whilst with the rear the servo will shut down after a few seconds to stop the draw on the battery
though im pretty sure you already know this

Front brake and no i did not know that mate about the servo

Cheers Chad

 

[Kneeslider916]

Front brake and no i did not know that mate about the servo

Cheers Chad

I didn't know that either. .........