EBL 1100mAh Solar AA Rechargeable Batteries - 1.2V High Performance Pre-Charged Solar Batteries for Outdoor Solar Lights, Garden Lights & Household Devices (Pack of 20) - Perfect for Solar-Powered Outdoor Lighting & Emergency Power Backup

Extended review for full experience:This is my first time buying EBL brand batteries. I purchased these two months ago, wanting to fully evaluate them to see how they would hold up as solar light batteries and various other uses. First thing I did was charge them. Each battery was precharged as promised, took about 30 to 90 minutes before indicating a full charge. I had about 16 solar lights of varying models.I purchased a smart charger in order to charge them individually since these would be discharged in the same manner. This turned out to be a very smart investment, more on that later. As I started using them, swapping out the original batteries, I found all my solar lights had very cheap cells, varying anywhere from 300 to 900 mAh. This explains why a lot of them were seldom on more than a few hours, if at all. The older solar lights were worse off, there was battery leakage in half of them. I did some general cleaning and testing them, finding a few solar lights would stay on even in a dark room, or not turn on at all. After some research the problem was not a battery problem, the photocell light sensor had gone bad.Through the first few nights of use I noticed some solar lights were not lasting very long just a few hours, while others stayed illuminated the entire night. This is where the smart charger came in very handy. I rotated some of the EBL batteries around and seeing their mAh charge capacity: most were getting the full 1100 mAh, a select few were charging only to 500 mAh. So to troubleshoot the lower rating I discharged cycled and recharged at a higher 500 mAh charge. This worked great, now getting the full 1100 mAh. What seemed to have caused this was memory effect of charging in certain solar lights (always seemed to be the same solar lights going out).I checked these periodically throughout the night for the first few weeks, and found they were much more stable. Now into the second month most of my solar lights stay illuminated all night, which is saying they last 10 hours this spring/summer, quite amazing. And I of course should say, they work best after a bright and sunny day. After a few rainy days they do dim after 5-6 hours, but the next sunny day fixes that. My solar lights are always the last to dim compared to the neighbors, lol.Side note: I have used these in a flash light and an Xbox controller, both applications met my expectations. I also purchased the higher capacity EBL NiMH batteries (white exterior) for those devices, all I can say is A+ for EBL.The EBL 1100 mAh NiCD batteries have been an exceptional purchase for me, hope this lengthy review helps some people. :)