Customers report mixed experiences with the battery, with some finding it long-lasting and convenient to recharge, while others experienced issues with it not holding a charge or failing after limited use. The product is praised for its brightness, with many noting it provides ample light even on lower settings. Functionality is also a point of contention, as some users found it easy to use and reliable for power outages, while others encountered issues with units not working or being difficult to assemble. The product is generally considered durable, with some users having owned theirs for many years.