Did you know you can recharge regular AA and AAA alkaline batteries safely? Neither did we...we always believed you had to use rechargeable models. There's a catch though: you'll need a device called the SecondWind Alkaline Battery Charger, and it's not compatible with NiMH, NiCAD or Lithium-based batteries. But if you've got a drawer full of dead Energizer or Dura-cell (the manufacturer recommends name brand for their quality control), this could be a useful way to eke out a little more life/use...
SecondWind Alkaline Battery Charger takes about 90 minutes to charge up to 4 AA or AAA batteries, and you can mix-n-match sizes. And to allay worries about exploding/leaks, the charger adjusts after recharging batteries to a fully charged state, trickling the charge for up to 4 hours. After 4 hours, the SecondWind charger will stop charging the battery.
Another interesting note mentioned is about determining the quality of a battery:
Usually, the heavier the battery, the better it is made. A better made battery translates to a longer battery life and more recharge cycles.