Apparently the 1 charge thing was simply false, either that or they updated the effect fast enough for the corrected one to appear in a published magazine. I'm talking about the last issue of Dengeki Playstation, where they disclosed all the effects (source: BG, starting from Zirael's post).

Head gives with 5/5 and weather the macc bonuses 100% of the time, and hands gives with 5/5 and weather the damage and healing bonuses 100% of the time.