Amazon Basics 16-Pack Rechargeable AA NiMH Batteries, 2000 mAh, 1.2V, Low Self Discharge, Pre-Charged, Recharge up to 1000x Times

Customers find these rechargeable batteries reliable, working right out of the box, and appreciate that they save money in the long run. The size receives mixed feedback, with customers noting they are slightly larger than regular AA batteries. The pre-charging feature and charging performance get mixed reviews - while some report they come pre-charged and recharge well, others say they don't come charged and don't recharge properly. The battery life is also mixed, with some saying they last long while others report they don't hold a charge.