How do you recharge a watch battery

No AA batteries will damage the roku or any other device if these are standard batteries.

Your watch needs a new capacitor ( rechargeable battery of sorts) take it to a jeweller unless you have tools and know how.

I am assuming you are reading the battery charge correctly. If so you need a new rechargable battery. Special battery so it is a little expensive. Make sure the person knows it is a "rechargable battery" you want. A regular battery will not work properly or recharge.

It sounds like you have had trouble with this from day one, the problem is the solar cells are not charging the battery, or the rechargeable battery is defective. I recommend returning the watch if warranty is still in place.

It is unlikely that the capacitor will have any charge on it so you should shake it gently to charge it up. You certainly can't do any harm by charging it, even if the capacitor did have any charge.

Do you mean, you haven't been wearing that watch but to put it in the drawer for a long time?
If so, to recharge the battery, just put your watch outside or anywhere it can catch the sun ray or day light. After few hours or about a day, the battery has been re-charged and your watch will work.
If it still doesn't work after doing that, buy a new watch. Don't bother to repair the watch or to replace the Eco-Drive battery, because of the cost.

The rechargeable battery needs to be replaced in the watch, you need to take it to a jeweler to have a new one installed.

You likely have a dead battery. Follow the instructions on this web site http://forums.watchuseek.com/f43/how-change-ctl1616-rechargeable-battery-41076.html
it is clear and covers most casio models. Watch closely for the springs when taking your watch apart. You can order the battery online (the best option) but most people that use a standard lithium battery seem to have no problem.

Eco Drives don't have batteries they have capacitors. The watch needs to be placed in natural light, sunlight is best, for a day or so. Here are the instructions from Citizen. It also gives information on resetting so it will work after recharging.

http://www.citizenwatch.com/Database /print_technical_info.asp?caliber=C652

Cheers

The Citizen Eco Drive watches use special recharchable batteries.
I started collecting a couple of watches and I noticed sometimes a jeweler replaces them with an ordinary battery. The watch will work and at the same time it will try to recharge this one until it explodes! In newer models they made it harder to use the non-rechargable ones by adding a special connector or clip to the rechargable battery types.
Okay, if you say your battery goes bad, or the watch does not run? It may have lost the charge over time. First thing to try is to leave it on the window sill so the dial is in the sun. It will start ticking, but please leave it out there for 3 days to a week. The seconds hand will tick irregularly in steps of one and two seconds, to show you it wants you to readjust the time, as it knows it has lost time. Adjust the time and it should run smoothly.
The seconds hand should run in single second steps, if it takes steps regularly, but every 3 seconds or so, it tries to tell you that its power level is going down. It will be able to continue for one or two days, but you should get it into the sun more often.
Charging the battery under a lamp is possible, however this heats up the watch and this may reduce battery life.
If you need to know more about the Eco Drive, look for detail tech manuals for all types here: http://www.citizenwatch.com/downloads/tech/tech.htm
Those are great watches as long as you remember it needs light to charge.