what is the power source and are batteries include
619046
Batteries are included, and the calculator is battery-powered with solar backup (though, according to one review, solar power isn't enough to power it alone).
619047
The power source is a little circular 3V internal battery. It is included with the device. There is also a light receiver on the face of the device that I assume contributes to managing battery power.
619048
One 3-volt CR2032 lithium battery (included) with solar assist. here's the manual http://www.manualowl.com/m/Texas%20Instruments/TI-36X-Pro/Download/240620
619049
It comes battery(s) installed, and has a small solar charger panel on front. Replacing battery(s) requires unscrewing the back -- if ever required -- with auto shutoff the batteries will likely never need replacement. Note: All entries, active equations, and work in progress remain stored in the memory after auto shutoff and are immediately ready to pick up where you left off when you power back up again.
619050
Christine, my TI-36X Pro relies entirely on solar power and does not need or include batteries. Mine has always performed flawlessly on solar power and has never given me any trouble. I would heartily recommend the calculator. Hope this helps!
1379506
The power source is 3 AA batteries. No AC plug. Don't bother buying it, tho - it was a piece of garbage. not enough air flow to actually play. we used it once and were done.
1083376
The battery is included, a pair of NiCd AA Cells! It's so much better than expensive 12V lead/acid gel cells.
1044090
You need to buy a power source which is either an adapter or a 9 volt battery. I went for the battery, so it's not a big of an issue, just the battery will do it. In the box, there's no battery included.
34628
It is battery powered...3 AAA batteries. I don't know why this isn't included in the description. The exact measurements are in the "Features &Details;" section on the Amazon product page. You have to expand the section to view the measurements.
1712860
It does not use any battery. It connects to your source and the power is derived from your source i think.
1771292
Batteries, AAA if I remember correctly (I don't have it with me at the moment)
487492
The batteries are included. I bought mine months ago and it hasn't died on me yet. Hope this helps!
1844936
Yes the charger and batteries are included. Mine were rated at 3000mah, and although these are the cheap bran of batteries, they lasted just as long as my nicer Panasonic brand ones. Be sure to charge them for 6+ hours before using. This is an absolutely awesome flashlight! It stayed super bright for over 2.5 hours on one battery, and it was still bright enough to be useful even at the end.
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.
2096646
Battery powered. Not sure about the back lit part since I bought it as a gift
1422208
Batteries are included. We bought this at Christmas & they are still going. Mouse works fine but child would rather have a cordless as he sees us use.
1254571
Batteries are included. We have had this awesome toy for sometime and it still works great!
1978921
no power supply. BUT the batteries you put in there last for such a long time, I am, actually, very shocked and pleased!
1483670
The power source is batteries. Not sure of the frequency, but I would definitely NOT recommend this product. As a front door to inside intercom the volume was so low that it was worthless. We finally just threw them away.
172241
I'm using my desk right now. Three small batteries are the power source for the lamp. They are included when purchased. There is not a USB connection.
1121869
Yes the battery is included. Please be aware that this is great for small jobs. It is perfect for me to tidy up the patio or front porch in between my husband's yard maintenance. If you have a big yard or heavy blowing to do, you will need a bigger model.