What is power inverter do, and what can I use one for?
Power inverter changes DC power from battery into conventional AC power that you can use to operate all kinds of devices electric lights, TVs, microwaves, power tools, kitchen appliances, radios, computers, etc. You just connect the inverter to a battery, and plug your AC devices into the inverter. and you' have got portable power. whenever and wherever you need it.
The inverter draws its power from a 12 Volt battery (preferably deep-cycle), or several batteries wired in parallel. The battery will need to be recharged as the power is drawn out of it by the inverter. The battery can be recharged by running the car motor, or a gas generator, solar panels, or wind. Or you can use a battery charger plugged into an AC outlet to recharge the battery.
What is the power inverter size should I buy?
The power inverter size you choose depends on the watts consumption you want to run (find the power consumption by referring to the specification plate on the device). the recommend power inverter you buy a larger model than you think you will need (at least 10% - 20% more than load).