Thanks Edward. Already checked the battery, no defect cells, voltage good, 44V tilt backward full pressure. One wheel was dragging a bit, I adjusted the brakes, didn't help. I was suspecting a faulty component ithe EV100 but after many test, my conclusion was it is overheating and proved it with an infrared thermometer. In the book it is written that even with amperage reduced at REC1 output, the truck should reach sufficient speed before 1A close. It is clearly not what is happenning on my truck.next step is to remove the battery and scan the truck for a short or a leak to the frame. 1a contact is becomig spotty but with ampmeter on rec 1 output, the current drops to zero when contact close. I will replace the contact at the resolution of this bug. Like I said the truck works in a small area with short distance (receiving dept with 4 garage door to cover) but it has always been the same applicaton. I dont have the factory specs but i ran through the settings and all seems correct according to logic. If you havr them it may be a good thing to do too. Many thanks!