Battery Dead Again

by Yoly

After charging the battery, it went dead after 2 weeks of no use. Hooking for the Battery Tender Jr for one day did not bring it up, so I tried for another day. Nothing. Light of the charger was still red and whenever I tried turning the scooter on, I heard the dreaded g-r-r-r-r sound of the ignition.

One more day (3rd) and I was ready to kickstart it. I don't know if this is usual, I don't think so... but I went out that morning and had started to undo the connections when I saw the green light.... It had charged!

But it shouldn't have in that amount of time, I though the battery was drained beyond repair at this stage. My best deduction is that the connection to the outlet was faulty, and it charged on the second - to third day, after unplugging and re-connecting.

Now I am leaving the scooter connected to the battery charger all the time. That should work until spring.


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Jan 15, 2010
Trickle Charger
by: Anonymous

Actually if your battery is 9 amps divide that by .75 amps and it takes 12 hours. A non-disconnected battery is having a draw from various systems too, hence the long charging time. A trickle charger is charging at 12 volts and .75 amps.

Jan 11, 2010
Yes, that is True
by: Yoly

I guess that it had never been so low in charge, that is why it took that much. The formula to asses time required to charge is this:

Battery Capacity (V)/Charger Current(AMP)= Hours

12 V /.75 AMPS = 16 hours

That is why I assumed it was not tightly connected the first time, since it took more than 16 hours to charge.

Jan 10, 2010
Battery Tenders
by: Jim Zeiser

The strength and weakness of battery tenders is that they charge at such a slow rate. Most replenish at a rate of half an amp an hour. A nearly dead nine amp batery needs 18 hours or so to get its charge back. Sometimes more since a trickle charger is meant to maintain a healthy battery and needs awhile for a discharged one.

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Battery Tender Junior in package

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