We briefly reviewed battery chargers in a previous post “The Best Rechargeable Batteries of 2013“. But let’s take a look at the best “Universal Battery Chargers”. These are chargers that can handle AAA, AA, C, D sized cells, and well as 9V cells.
This device is a night vision scope, but it doesn’t require any batteries. Instead, it’s has a lever-activated power supply, so you can generate your own power ad hoc. You’ll can see in the night without fear of an energy failture. It is priced around $200. See Camping Station or other vendors.
This is a nice children’s headlamp for about $18. We like it because it uses three bright, energy-efficient LEDs. So the batteries will last hundreds of hours. It has three settings: high, low and flash. Available at Amazon. See also this similar headlamp from Amazon.
Rayovac has released a new line of NiMH batteries called "I-C3" which charge in 15 minutes. Based own experience, these batteries do live up to their claim and recharge in 15 minutes and are very long lasting.
One of the best charger/battery series available. The batteries are rated at 2400mAh – one of the most powerful out there. Quick charges in about an hour, then switches to trickle charge. Comes with a 12V adaptor. Purchase from: Amazon ($29.88)