what type of plug does it need for the battery
217496
EC3. Here is a photo. http://www.rcheliresource.com/wp-content/uploads/2008/09/ec3types.jpg
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.
628189
I use a 9v battery. You will need to adjust the battery connectors a little, as it tends to be a little wide.
1117801
The battery plugs directly into the lights so it's a pretty standard plug, I'm not sure if the nano uses the same plug, it is a 2S battery
933407
You can buy an AC adapter to use instead of batteries. The plug has to output 9 Volts and 2 Amps. Plug size is 5.5mm x 2.5mm and make sure it is Center Pin Positive.
307770
Either 9V battery or AC plug if outlet is close enough. I don't know about the megapixels
1044091
Yes, you need to purchase the adapter or a 9 volt battery. I recommend the adapter.
1300153
A standard cigarette lighter male plug-in with a standard USB female port. I suggest you buy a 2A (2 amp) power output.
1478400
This model plugs in. The other model, which looks cylindrical, runs on a flat round 2030 (I think... trying to remember) battery. When I had this model, it came with a plug in adapter.
1366211
You plug it in. I works pretty well. It has better power than the battery operated kind.
1855530
We have an old version and a new version of this product. The OLD version had a plug for an AC adapter, 4.5V. The NEW version no longer accepts an AC adapter; batteries are required.
185841
The plug is pretty universal. Not sure how much the unit weighs--that should be on the Amazon spec sheet somewhere. A decent battery should last a long time, I would think.
550837
It takes a "stick pack" style battery. Either a nimh (nickel metal hydride) 7.2 volt-8.4volt or lipo (lithium polymer) 2s (7.4 volt). Stock battery connector is molex type (tamiya plug)
2265171
use a cigarette lighter USB adapter. If you need to hook up directly to battery add a cigarette lighter socket with battery clips.
208041
Not a direct plug. It comes with one for the drop in battery charger, but that's it. Besides, there is no place to plug one in.
1351295
yes, anything that has a 9 volt rating will work. it should have the right fitting size plug for you, but remember this is only for battery backup only. it is not to recharge or replace your battery. it's purpose is to get you 3-5 hours of additional play time when the juice is low on your dvd battery then this one kicks in to do the job.
1752957
There is a small plastic plug that has to be stuck into the side of the battery. It's a place where one could attach a power cord when the battery isn't charged enough. The plastic plug is in parts envelope.