How is it powered? Battery or external power source
1257225
External. Also note this does not have a connection for the fish finder. It's strictly a GPS.
1497991
It is possible to hook up an external battery pack, it'd be a diy project though. Otherwise, like the other guys said, you're stuck with having to have a power outlet
1497221
Bob, I'm not sure what you mean by "outside power source". It plugs into a regular 110 volt wall outlet, or extension cord running to a 110 volt wall outlet. Hope this helped.
1674683
It has an internal battery and you recharge via USB either plugged into computer or a wall plug. You can also use it while plugged in.
472271
Power source is an internal Li-Ion battery that is recharged when the unit is plugged into the computer USB port
533765
It can be powered either way. A power adapter is included in the box as well.
333862
No external power source needed. Just simply plug in the 3.0 USB to the PC and you are set. :)
723329
The power supply is an option. It uses a 9 volt battery (not supplied - no surprise there). When the power supply is used, the battery functions as a back-up.
59497
It is powered through the USB port. Just plug into the USB port and it is ready to work.
1272885
This doesn't use an external power supply or battery. It simply uses one USB cable that splits into 2. Plugging the tablet into to USB ports powers the tablet and runs the display, digitizer, and express keys.
1146880
It isn't an external battery. You put the battery in the laptop and connect the laptop power cable.
1144113
Strictly battery powered. Uses 3 AAA batteries wired in series. It also comes with 3 batteries that I have yet to replace.
2054581
The cord that comes with the external power bank has a USB end and the other end attaches to your device. The external power bank is charged by plugging the USB end into a USB outlet and the other end into the external power bank. Once charged, you have power on the go. No batteries needed.
1471670
It comes with a power adaptor for an external power source. (will have to deal with a cable) Also a battery charger for the included battery which clips onto the back on the unit.
1203403
The power source is battery.I think it is 9volts not sure but it is battery operated.
226498
It is rechargeable by USB. Not sure about battery because I don't use it much so haven't looked for a battery to change.
1033079
AC power is the primary source and the battery is the backup. FYI I used it for two months with just the battery and it worked fine.