On the Kfv1 I get 12 hours of life. Even if I leave it in Standby for a week it's doesn't discharge much at all till I use it.
My KFv1 takes 3-4 hours from 25% to a full charge but I always charge overnight. The new charger plug they sell said it charges about the same as the old version.
I haven't been using my KF lately much at all. I own a Samsung Galaxy Player 5 and it's replaced the KF for now.
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