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post #1 of 3 (permalink) Old 09-12-2010, 02:59 PM Thread Starter
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Keeping battery charged

As a part-time resident here in Mexico, my smart sits idle for several months at a time. I bought a float charger to plug into the car during the time I'm away, but it doesn't work. It may be due to the polarity of the electrical wiring in our garage. Does anyone have any tips for keeping the battery charged while the car is idle?
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post #2 of 3 (permalink) Old 09-12-2010, 03:40 PM
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Hi smartapple,
I have the same problem with another car which is stored in the garage during the winter. Its battery is so small that I can not start the car after one month.
So I disconnect the battery during these months and connect it to to a charging-control device. Due to the fact you also tried it, maybe it will work if you take the battery out of your smart?
If you battery is quite new I suggest that it also works great if you just disconnect the battery while it is idle. Of course, it's not the best solution...but I think in practice it is ok .
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post #3 of 3 (permalink) Old 09-12-2010, 10:31 PM
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Originally Posted by smartapple View Post
Does anyone have any tips for keeping the battery charged while the car is idle?
This is what I use and it is very well engineered. The optional cables let you modify the connections to suit your needs.


Groit's Garage also sells the same the same under their own brand.
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