Does this unit have a built in battery? or does it only work with the 12 volt plug
1245147
Everything, including 12v power is included on the one and only harness that hooks up to it.
1245148
This device contains no battery. It obtains power from the same OBD-II socket that provides data about speed, RPMs, etc. As noted elsewhere, in most cars this means the device turns on and off automatically when you start and stop the car with the car's ignition switch. In a few cars, the OBD-II socket provides power even when the ignition switch is off, so you would need to plug and unplug this device each time you use the car, which would probably wear out the unit's harness rapidly.
1245149
No battery, no 12 volt plug, connects by OBD plug usually under dash which reads motor stats
220151
The battery is built in. Below the unit has the charging cord and my unit has lasted days on low setting.
2097399
It only works by being plugged into an outlet. It is not made for batteries.
1908469
No, this is not battery operated, it does come with a wall plug. The cord is a decent length too.
1138808
This unit does not come with a 12 volt (cigarette lighter style) plug. It basically has a small set of jumper cables that clamp directly to the battery.
306864
It needs a 12v external power source to work. It doesn't have internal batteries.
1914843
It is charged with a cord supplied via 12v outlet.Has an internal rechargeable battery buildt in. In the standby mode, I have left it on for 3 days and it worked. Great item, best I have ever had! You will not regret it I promise you!
2271927
The unit plugs into a regular wall socket.It takes a 9 volt battery for portable use.
2004161
Plugs in and takes batteries. I guess you could use rechargeable batteries, but unit will not charge them.
1136413
There is a 9 volt battery compartment in this unit. This is a hard wired unit, the battery is just for backup.
2177760
It does have a plug, no battery. Not sure what the voltage is though, sorry!
165641
The unit comes with a 4-6 foot cord which already attach to a transformer that plugs into your 110-120 outlet and at the end of cord its size of a 3.5mm jack which you have to plug into back of unit so it does not use any batteries just your home outlet only.
1248624
it has an electrical power cord to plug into an electrical outlet. There is not a battery. So as long as you can plug in, it works. We perform preventative maintenance on fitness equipment and need the suck/blow to do this. This is a great vacuum. We are on our second one and won't leave home without it when we go to to work.
408357
No it does not use batteries. The power cord comes out in the back of the unit.
187047
the battery is built in. you need to charge it before you use it. one charge lasts about 15 minutes or so.s
1819489
No, it plugs in. When I first saw it, I assumed it was battery-powered (and weak), or even manual. But it plugs into a standard outlet, and is plenty powerful.
1000133
It runs on batteries. You can plug in a 12V power source of your choosing. I use a universal power adapter that came with several plugs and found one that fits nicely.