Trickle charger - BMW Luxury Touring Community
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post #1 of 5 Old Nov 28th, 2006, 7:26 pm Thread Starter
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Trickle charger

Hello Gents, just want to know if it is ok to place a charger on the Batt with it still connected to the bike. Nothing more than 2 amps. I know the owners manual say's 'no', thanks for the input.


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post #2 of 5 Old Nov 28th, 2006, 8:55 pm
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Many of us use 'smart chargers' that auto-adjust charge voltage/current to maintain a battery. BMW even makes a trickle charger for their bikes.

Should be no prob - but if it's a dumb charger, watch it close. Even at 2amps you can cook 'er dry and ruin it in as short as tens of hours. DAMHIK.


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post #3 of 5 Old Nov 28th, 2006, 9:19 pm
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Trickle charger on a timer

If you want to connect a trickle charger and forget about it, plug it into one of those 24 hour timers which allow you to turn lights on/off a specific times.
I set the time to turn on the charger for just 10 or 15 minutes in a 24 hour period to serve as battery maintenance.

If you want to charge a battery that is in need of recharging, I'd set it to charge for 12 hours or so and then check the battery. I wouldn't leave it charging for 24 hours or more.

I have a 1 amp el cheapo trickle charger which works well this way. The charger does have interal regulation that limits amperage and voltage but it is not a "smart" charger like a Battery Tender that responds to the battery's condition. Never had a problem with it.
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post #4 of 5 Old Nov 30th, 2006, 8:38 pm
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I use a "Smart Charger" ($39 to $59), and leave it connected to one of the 12 plugs 24/7. Seems to work well.
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post #5 of 5 Old Nov 30th, 2006, 9:42 pm
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I use the "Battery Tender Plus" the one made for BMW, says right on the top of the charger (they make the offical BMW one).

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