Raul, this may explain it better
http://batterytender.com/why_batterytender.php
Cheers,
Cliff.
LMAO, Magpie, thanks for posting the link to the spanish translation on the site. Somebody should tell the people at batterytender.com that web translators are crap. I could give them a killer deal for a translation... I've laughted so much I almost forgot about your slippers!!!!
BTW, if you ever need an spanish translator, give me a shout!!!
