Bike turns over on first try but not second....

[JWR]

Originally Posted by Kayrub

A batter tender it read 100% charge and it did have a 12.8 reading on the voltage.
I've never jumped it from a car before.

A tender will not charge a battery in 1 or 2 hours.....

Most tenders put out .5 to 1.5 amps per hour. The battery is 6.5 to 11 amps.(if I recall )

So divide amps of charger into amps of the battery...this is how long you need to charge the battery.

1. charge battery over night.
2. if it will not start boost it.

It is really that simple.