Had a quick question.

My summit has been amazing out if the box. But I noticed right at the end when my Nimh packs were losing their juice, on hard acceleration in second gear only the lights on my bumper and light bar I added would go dim or off for a quick moment and then come right back on once the truck got up to speed. Is this normal?

Is this a result because of the lower state of power in the packs and the heavy power draw accelerating in 2nd gear for this heavy beast of a truck? Any suggestions are welcome.