The power supplying ENERGY 6 unit has a 4-6 hours’ autonomy, according to the task to be carried out, and is a new generation of memory-less, lithium-polymer batteries, which can be recharged even when they are not completely flat, this way keeping their maximum efficiency. They do not suffer from overheating, so they grant top safety and a longer lifetime than the common lithium batteries. The backpack for carrying the batteries is extremely light and resistant and grants great movement freedom while harvesting. The battery weight is well balanced, so that it does not tire the operator.