After several use, and despite the practicality of this mower, I really regret the purchase. I use it all around and 15j so she and yet little used mower battery has almost no side enough autonomy to finish my beard cutting (about 1cm). Surprisingly, the battery seems to be split in two, for when the battery is empty in mower, the razor can be used for more than 10 minutes yet. I tried full discharges and then reload this does not improve the situation. In short, in qq months, under penalty of having a partial section, I will have to change this mower. I will absolutely not recommend because of this. Too bad because it works very well under water, is well in hand and is convenient. I am disappointed with this choice and do not would resume Philips