I've been using these Energizer AAA rechargeables for months now, and they've completely changed how I power my devices. The 800mAh capacity means my wireless headphones last through multiple gym sessions before needing a recharge.

What surprised me most is how well they hold their charge when not in use. I left a set in my emergency flashlight for three weeks, and they still had enough juice to light up my whole garage during a power outage. No more finding dead batteries when I need them most!

The environmental factor was a big selling point for me. Knowing they contain recycled materials and can be recharged hundreds of times makes me feel better about all the tech I use daily. They do take slightly longer to charge than I expected (about 6 hours from empty), but the extended usage time more than makes up for it.

One word of caution - they didn't play nice with my friend's specific headphone charging dock. For standard chargers though, they've been flawless in my Xbox controllers, TV remotes, and digital cameras.