某手机电池名牌上标着“800mAh”,它充足电后储存的电能是:12096 J.
手机电池电压在3.7-4.2v都是正常,充满电时,电压U=4.2V
80mAh=0.8Ah
W=0.8×4.2=3.36Wh=12096(J)
答:略.