Bimmer124 :
The battery seems to work although it stays red while charging. I left it on for 5 hours and it did not change to green. Does this mean the battery is defective?
You're talking about a 64WHr battery, it might take half a day to fully charge if you emptied it out. If it doesn't show the charge full signal (not all chargers change to green! READ THE MANUAL!) after a day, contact the seller for a replacement