Do not intentionally overcharge a battery just to take a picture for FT. Batteries are internally damaged from such abuse and will no longer be safe. Either right away or at any random time later it can vent with flame from the hidden damage it sustained. If it vents inside a sealed pipe (like a flashlight) it can violently explode. People have been badly injured.
JPBel, you should
never advise people to intentionally overcharge a li-ion!
For anyone who already has one, only use it if you can keep an eye on it. You must not leave the battery in the charger too long after the light turns green. A 3400 mAh battery (highest common real capacity) should be fully charged from empty in 4 hours. Lower capacity or partially discharged batteries will be done sooner. Set an alarm to remember to remove the batttery or plug it into an
outlet timer.
Do not
ever leave it charging overnight or when you are not home.
I would encourage people to contact fasttech and link to HKJ's test. Fasttech specs are entirely wrong, most importantly it does not have overcharge protection as FT claims.
Edited on 3/1/2015 at 7:06 AM. Reason:
I am Not a FastTech staff member.