Okay, so I grabbed these WENJOOP rechargeables after my Xbox controller kept eating through disposables. First impression? That plastic case is CLUTCH - no more loose batteries rolling around my junk drawer!

Performance-wise, they last noticeably longer than the cheapo store brand I was using before. My wireless mouse has been running on the same pair for 3 weeks now with no signs of dying. The pre-charged feature is legit too - popped them straight into my kid's toy robot and it worked immediately.

Now about that capacity... yeah they're probably not hitting full 1100mAh (my charger showed ~850mAh), but honestly? For the price of 16 batteries that can be reused hundreds of times, I'm not mad. They fit fine in all my devices except one tight battery compartment where I had to really push them in.

Eco-friendly bonus points: No more guilt about tossing dead alkalines every week. These have already paid for themselves after two months. Would totally rebuy when these eventually wear out!