Skyl

Here is a video that I recorded just now showing the issue https://youtu.be/VVliALBn_VQ

On the first pull of the trigger, after I manage to put it spinning it runs perfectly without breaks.

Hello, I have a Bosch PSB 1800 LI-2 since January 2017 bought on amazon. It started to doing something strange, it flashes all the 4 leds (3x battery level plus the lantern led) all at once, three times occasionally after press and hold the main button, it does this on all the modes and forces and do nothing other than flashing the 3 times, after try pressing the button a few times it runs perfectly with the same power as when it was brand new, and only do it again after a few minutes with no use. Batteries are fully charged, and it is not used everyday, just for bricolage here and there. What can it be? Should I ask amazon for warranty or is there anything I can do to fix it? Thanks