Welcome, I like the enthusiasm and would like a few more details on how you would use the light such as duration, distance and area to light to fine tune suggestions. Does it need to be visor friendly(small with good reversible clip) or bite friendly. Run time needed will dictate the balance between size and output. In general, a straight tube light like a Convoy S2 is more pocket friendly but doesn’t throw as tight/far as a bell head like a Convoy C8 or Eagle Eye X6. Even AAA (10440 liion) lights can be plenty bright for cabinet work so AA (14500 liion) represents a compromise between run time and size. An MC0 charger will work from an auto USB and charge a spare 10440 or 14500 cell if small size takes priority over maximum run time but if not then 18650 cells have the best power/size ratio and will give the longest runtime. There is a Group buy going on a pen light with a pocket clip and nice tint(high CRI) led. Lots of different group buys for that matter. Good luck and be sure to ask questions.