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TECHNICAL MOTOBRICK WRENCHING In Remembrance of Inge K. => The Motobrick Workshop => Topic started by: ludwig on September 13, 2014, 09:47:58 PM

Title: any probs i should look out for leaving battery disconnected 94 k75s?
Post by: ludwig on September 13, 2014, 09:47:58 PM
maybe a dumb question:
 i'll need to remove the battery to keep on a charger for a month or two instead of going through the accessory socket with the battery installed...
will this wreak any havoc on the ecu or abs being disconnected from power?
already looked in the lieberry and scanned prev posts and just trying to cover my bases.

thanks for indulging a newbie question

ludwig
Title: Re: any probs i should look out for leaving battery disconnected 94 k75s?
Post by: WayneDW on September 13, 2014, 10:12:10 PM
Nope, I do it every winter.

The clock will forget the time, though.
Title: Re: any probs i should look out for leaving battery disconnected 94 k75s?
Post by: ludwig on September 13, 2014, 10:54:28 PM
Danke Schoen Wayne!
Title: Re: any probs i should look out for leaving battery disconnected 94 k75s?
Post by: pdg on September 13, 2014, 11:03:18 PM
If it's only a couple of months and you're not leaving the battery outside in freezing temps then I wouldn't bother 'keeping it on a charger'.

I'd remove it, charge it and put it on the shelf - remembering of course to cover the terminals to stop accidental shorts. Then, in a couple of months when I need to reinstall it, I'd check the state of charge and put it back in the bike. Honestly, after such a short time a good battery is unlikely to need a second charge to go back into service.

Of course, opinions on that process vary....


The fuel, ignition and ABS ECUs aren't intelligent enough to realise you have removed the battery - in essence, it's exactly the same as when you turn the key to the 'off' position as far as they are concerned.
Title: Re: any probs i should look out for leaving battery disconnected 94 k75s?
Post by: Grim on September 14, 2014, 10:06:14 AM
Bike will be fine. Don't forget to put some stabil in the fuel.

I'm of the camp if your going to leave fuel in it for under 6 months leave it will a full tank. The air space is he problem as that's where condensation will form. Less air space the better. 
6 months I'd drain the fuel tank and if not outside in the weather I'd leave the gas cap popped trying to prevent condensation. 

If you have ABS you will need to reset it but no big deal.
Title: Re: any probs i should look out for leaving battery disconnected 94 k75s?
Post by: Motorhobo on September 14, 2014, 10:13:44 AM
Bike will be fine. Don't forget to put some stabil in the fuel.

If you have ABS you will need to reset it but no big deal.

I've never had to reset ABS after battery disconnect. Does that only apply to long periods of disconnection -- I thought the ABS system rebooted from its current state every time it gets power.
Title: Re: any probs i should look out for leaving battery disconnected 94 k75s?
Post by: ludwig on September 14, 2014, 10:43:11 AM
Thankyou for the input guys... I guess I'll find out when I go
To restart in hopefully less than two months whether or not the
Abs must be reset as there are differing opinions.  :popcorm

It will be outside under a cover but I am topping the tank full of fresh clean super with a shot of Startron run through
The system after fuel removal and filter replacement due to
An issue on a separate thread.

I really appreciate this forum..
Tons of gracias!