I'm thinking of getting a battery booster power pack to power my scope. The only problem is my scope is using AC power, with a 3 prong plug. On the back of the scope motor is says 115V 60hz. I was told that it uses around 3watts of power. The smallest wattage inverter I could find was a 30watt one from Duracell. I'm not to sure about the quality of it however. The next step up would be a 75 watt one from the hardware store. How much would the efficiency effect the motor's accuracy ? What would be my best solution ?
MotoMaster Eliminator 700A Booster Pack
Duracell 30 Watt Inverter
MotoMaster Eliminator 75W Power Inverter
I could also just get a power back that already has a built in inverter.
Eliminator 300A/150W Power Box