Bought the lithium lazer when it first came out. A little history, I have owned a jiffy, eskimo and nills power auger.
first impressions:
Thing is rock solid, its built like a power auger. Its heavy duty...and HEAVY.
Surprsingly loud - not like a gas auger, but the gears meshing is quite noisy.
Batteries and life:
Bought a second battery when I purchased the auger. The batteries are heavy, but well built, like everything on this auger.
I purposefully left it out in my car after fishing in extremely cold weather (night time low was pushing -30F day time highs around 0), took it out the next day on the same battery, and was able to drill all the holes I needed all weekend on the one battery (approx 30 holes through 12"-18" of ice). When the battery was at its coldest, the auger definitely spun slower, but still easily cut the holes i needed.
I have still never run one battery out during a day of fishing, even run and gun.
performance: Cuts easily, cuts fast. The weight can be a lot, I take my hand auger when the ice is thin or if there is a lot of snow or a steep shoreline hill. Three years in, and zero reduction in battery performance.
overall: Its a great tool, purpose built and designed for many years of hard use. I feel like I could use this auger every day if I was a guide and it would last for many years.