Remember it is "float charger" not "trickle charger". Check out this thread:
http://blog.wenxuecity.com/blogview.php?date=200811&postID=25753
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太陽能充電器 if outdoor, Battery Float Charger if inside
-beHappyLOL-
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01/07/2009 postreply
10:33:28
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You are right - solar one is good for parking outside
-internuts-
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01/07/2009 postreply
19:13:01