Rechargeable batteries help solve the problem by increasing the number of times you can use any battery before you have to throw it away. But I’ve found that standard battery rechargers don’t often adequately do the job. Plus, I’d rather recharge batteries without using electricity. This is especially handy if there’s a power outage and you need to power up without plugging into a wall socket. Here are five of my favorite ways to recharge batteries. 1) Plug it into the car lighter socket.
http://www.care2.com/greenliving/5-of-the-best-ways-to-recharge-batteries.html
Conventional battery chargers may take up to 8 to 10 hours for charging two batteries. Lithium Ion (Li-ion): One of the smartest of the lot, these batteries monitors the power usage and can save up to 15% of the energy of the battery due to a built-in chip. The typical charge time for these batteries is 3 hours; however, some chargers are known to do the same job in less than 2 hours.
http://www.doityourself.com/stry/how-long-should-you-charge-aa-batteries
AA batteries are charged by plugging the batteries on to the electric charger. The chemical ingredients of these batteries store the electric current, which we use later on for various purposes. Typically, it may take 3 to 4 hours to charge any type of AA battery; however, all these depend on your requirements.
http://www.doityourself.com/stry/how-long-should-you-charge-aa-batteries
Well, they're not perfect (don't have very good recharge capacity, few recharge cycles, etc) but you can recharge them to an extent. Many people have developed fancy charging circuits, but I was able to get charge into some Alkaline batteries with just an old cellphone plug. The adapter says 3.7V, 300mA.
http://www.instructables.com/id/Easily-recharge-alkaline-batteries/
Charging Methods. There are many kinds of chargers on the market for these batteries, and new varieties continue to pop up frequently as the need for them arises. Most plug into the wall, although some are solar powered. They also come in various sizes, allowing to charge anywhere between four and 16 AA batteries at a time.
http://www.doityourself.com/stry/how-to-recharge-aa-batteries-without-a-charger
Step 1: Get Your Power Source! You'll want to find an adapter plug from something you don't care much about. Backwards powering batteries can lead to current backflow (battery power going through adapter) which can ruin some adapters, though usually at 1.5v you're safe (burned out a cheap 5v plug trying to recharge a 9v though).
http://www.instructables.com/id/Easily-recharge-alkaline-batteries/
2) Plug into the USB port on your laptop or desktop. You can find AA, AAA, and 9 volt batteries that all plug into a computer to get recharged. Coming soon are cell phone batteries that you’ll also be able to repower while you do email and update your Facebook page. 3) Tap the power of the sun.
http://www.care2.com/greenliving/5-of-the-best-ways-to-recharge-batteries.html
To find a recycling location near you, visit this website. Use rechargeable batteries responsibly in your home and you can get a lot of use out of them every time. This way, you only need to buy AA's maybe once a year instead of once every couple of months.
http://www.doityourself.com/stry/how-to-recharge-aa-batteries-without-a-charger
Rechargeable AA batteries are easy to find in stores because they are always marked as such. These are made of different compounds than ordinary batteries, specifically nickel-cadmium (NiCd) or nickel-metal hydride (NiMH), and they contain a different set of chemicals inside that allows them to replenish their charge.
http://www.doityourself.com/stry/how-to-recharge-aa-batteries-without-a-charger
Step 1: Get Your Power Source! You'll want to find an adapter plug from something you don't care much about. Backwards powering batteries can lead to current backflow (battery power going through adapter) which ...
http://www.instructables.com/id/Easily-recharge-alkaline-batteries/
how to recharge double a batteries
You can recharge double a batteries by plugging the batteries on to the electric charger. Recharge Double A batteries by plugging the batteries on to the electric charger.