Use Mtb-Taf by woods and undergrowth in complete darkness, power perfectly suited even on technical passages a little "hot" and / or more rolling passes 30 km / h. Autonomy tested in my garage around 3:00 in full power, about 10 minutes before the cuts light changes from green to blue (Attention when it cuts, it cuts at once). My trips are between 1:40 ET 2:00 ET I made 4 without problem. Charging time about 6 hours (charger turns from red to green LED when the battery is charged). Fast delivery 3-4 days, impeccable :). The product is clean and well finished, I placed the battery surrounded by foam in a can / bottle holder on the tool so that it is well protected both shocks and projections.