How long do you have to charge the Canon Rebel XTi/400d battery before it goes flat?

Question

My Canon came today [: & the battery wasn't charged and came with an American style car-charger [Im in england] but there was a little plug in the back to put it in a plug. The lead for the charger wasn't included so I made do with one where the voltage is much lower than the one put on the battery charger. I charged it for about 2 hours and the Camera told me to change the battery within 5 minutes. Is this the battery or the charger's fault? I would like to know ty cuz I don't want it going flat when I go to Paris next week

Answer 1

You need a charger that is made for your camera battery.  .  And when I got my XTi, I had to charge it a lot longer than 2 hours.  Check at a real camera store and see if they have a proper charger.  Mine came with one that just plugs into a wall or extension cord.  

I hope the charger you used didn't ruin your battery.  I was told to never use anything but the recommended battery by Canon.