Gerbing's Heated Clothing v. Battery Load


Information and questions on GL1800 Goldwings (2001-Present)
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CanyonGlider
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Gerbing's Heated Clothing v. Battery Load

Postby CanyonGlider » Wed Oct 24, 2012 11:58 am



I am trying to determine if my 2010 GL1800 can support the electrical load required for 2 riders wearing full Gerbing's heated clothing. I have calculated that each rider's electrical load will require 165W/13.6A on a 12V system. My concern is that the TOTAL electrical load for a 2-up scenario could be as high as 330W/27.2A

Does anyone know, for certain, that the GL1800 battery/alternator can adequately support this electrical load?? And where in the GL1800 specifications would I be able to find the information that supports either a Yes or No answer??

Thanks.



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WingAdmin
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Re: Gerbing's Heated Clothing v. Battery Load

Postby WingAdmin » Wed Oct 24, 2012 12:35 pm

With the factory stock alternator: most likely. With an aftermarket Compufire alternator, yes.

The stock alternator on the 2001-2008 GL1800's puts out a maximum of 78 amps. The stock alternator on the 2009-2012 models put out 110 amps. Don't know about 2013, I'd guess it's the same as 2012. The Compufire puts out 150 amps, 80 amps at idle.

As long as you don't have a huge ton of other stuff on the bike (lights, heated grips/seats, electronics) you should be fine.

Also keep in mind that you will virtually NEVER have the Gerbing's stuff on full. Unless there are snowflakes blowing past you, having your Gerbings run at full power will result in cooking yourself like a roasted chicken. They can produce a LOT of heat. I often don't turn mine on past halfway.

Your main concern should be the battery. It is an 18 Ah battery, so running 27 amps out of the battery without the engine running will very quickly deplete it. Very likely more than 10-15 minutes would deplete it enough that it would no longer be able to start the bike. Keep this in mind if idling. The idle power output specs for the factory alternator aren't published, but it's reasonably safe to estimate it at half the overall capacity. So that would put yours at around 55 amps at idle. If you're sucking close to 30 of that with heated gear, plus another 10+ for headlights, not to mention all the other lights, ignition and electronics, you will exceed the output capacity - which means you'll be drawing down your battery at idle. Again, that's assuming you're running both sets of heated gear at full output, which is not that likely. So as long as you're not both running your gear at full output while idling for extended periods, you should be alright.

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Re: Gerbing's Heated Clothing v. Battery Load

Postby CanyonGlider » Wed Oct 24, 2012 3:02 pm

Great reply, thank you! I'll check into the specified alternator. You're right about actual usage loading. I was checking against worst case use, but 165w and 14a is probably more realistic.

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Re: Gerbing's Heated Clothing v. Battery Load

Postby MikeB » Sun Nov 11, 2012 9:08 pm

Personally, I think the stock alternator will do you just fine. I do advise that you have an on-board voltmeter so you can monitor your system voltage while operating. At idle and with both my co-rider and I using our Gerbing's, the voltage does not drop below 13.0 volts. That tells me that the alternator is doing just fine. On my GL1500, we both use the Gerbing's heated clothing and the system holds well. Of course, I have a Compufire alternator on it and it is rated at about 1325 watts/90 amps at 14.0 to 15.0 volts.

If you want to determine the theoretical power you are consuming for your heated clothing, go to the Gerbing's site calculator at this link http://gerbing.com/MyAmps/.
MikeB
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CanyonGlider
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Re: Gerbing's Heated Clothing v. Battery Load

Postby CanyonGlider » Sun Nov 11, 2012 11:39 pm

Thanks for the added info, much appreciated. Have installed new alternator and voltmeter. Thanks again!

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Re: Gerbing's Heated Clothing v. Battery Load

Postby Red Ron » Mon Nov 12, 2012 11:28 am

WingAdmin wrote:With the factory stock alternator: most likely. With an aftermarket Compufire alternator, yes.

The stock alternator on the 2001-2008 GL1800's puts out a maximum of 78 amps. The stock alternator on the 2009-2012 models put out 110 amps. Don't know about 2013, I'd guess it's the same as 2012. The Compufire puts out 150 amps, 80 amps at idle.

As long as you don't have a huge ton of other stuff on the bike (lights, heated grips/seats, electronics) you should be fine.

Also keep in mind that you will virtually NEVER have the Gerbing's stuff on full. Unless there are snowflakes blowing past you, having your Gerbings run at full power will result in cooking yourself like a roasted chicken. They can produce a LOT of heat. I often don't turn mine on past halfway.

Your main concern should be the battery. It is an 18 Ah battery, so running 27 amps out of the battery without the engine running will very quickly deplete it. Very likely more than 10-15 minutes would deplete it enough that it would no longer be able to start the bike. Keep this in mind if idling. The idle power output specs for the factory alternator aren't published, but it's reasonably safe to estimate it at half the overall capacity. So that would put yours at around 55 amps at idle. If you're sucking close to 30 of that with heated gear, plus another 10+ for headlights, not to mention all the other lights, ignition and electronics, you will exceed the output capacity - which means you'll be drawing down your battery at idle. Again, that's assuming you're running both sets of heated gear at full output, which is not that likely. So as long as you're not both running your gear at full output while idling for extended periods, you should be alright.



I was thinking they went to the big alternator in '07 or '08. (Hoping anyway as I have an '08)

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Re: Gerbing's Heated Clothing v. Battery Load

Postby MikeB » Mon Nov 12, 2012 11:40 am

A larger capacity alternator was used in 2006 and later. However, any GL1800 with stock alternator is more than capable of handling the additional load of electric heated clothing for the rider and passenger.
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Re: Gerbing's Heated Clothing v. Battery Load

Postby Leos » Sat Nov 17, 2012 11:56 pm

Hello: Would you tell me where you located and what socket you used for the drivers vest. Thanks

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Re: Gerbing's Heated Clothing v. Battery Load

Postby MikeB » Sun Nov 18, 2012 3:08 pm

When you buy heated clothing, the necessary connectors and wiring usually comes with it. If you purchased or received used equipment without the necessary wiring and connectors, you need to locate a vendor for your brand of heated clothing. That vendor will be able to sell you or order the needed accessories.
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Re: Gerbing's Heated Clothing v. Battery Load

Postby Leos » Tue Nov 20, 2012 10:43 pm

Thanks for your reply! Could you tell me where on your bike you placed the receptacle for your vest if you use one. Thanks

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Re: Gerbing's Heated Clothing v. Battery Load

Postby MikeB » Tue Nov 20, 2012 11:24 pm

I used Velcro and attached the controller to the fuel tank lid. The power to the controller comes up from under the seat between the seat and the false tank.


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