My batteries arent charging properly!

[XSupraStar]

I dont if im just doing this wrong or not but my batteries are only staying charged for less than 15mins. I let a set charge overnight and still they died on me. Does it have to do with to much power and my wheels are spinning faster than they need to to get traction. I have the stage 2 drift motor in on stock tires running on tile floor. Would it better to just return them and get a new one? An help would be nice.
-B

[aperson]

when the batts are done charging and the light is green it is trickle charging them to make sure they stay charged. but they will only charge for 282 minutes or something like that. when you leave the batts in the charger they somehow discharge themselves. when they arent being trickle charged they are being discharged. i have a question too. should i completely discharge my batteries before i recharge them? or is it ok because of the negative v delta thingy

[dragon4450]

yah dont leave them on the charger too long. it will drain the battery. it dosnt matter if you discharg them or not the charger reads what they are at and then recharges them to the proper amount.