21700 Rechargeable Battery Case Set, 2pack 5000mah Large Capacity 3.6Volt 21700 Tip Battery for flashlights ect,

I have four of these EcoSolutions 5000 mAh 21700 batteries for use with my Fenix CL26R Pro Camping Lanterns and Fenix PD36R flashlights. In my experience they are every bit as reliable as the 5000 mAh Fenix ARB-L21-5000U Rechargeable Battery. They hold a charge well and provide full functionality to Fenix devices - which not all replacement batteries will do. While they aren't quite fully 5000 mAh, they're close... but at 50-55% less expensive than OEM originals, they're a great value while providing a reliable power source.

Don’t like getting stuck with a dead battery. Always good to have spares on hand.

These are used in my new Jumper T15 radio. These batteries perform and charge as expected, arrived quickly. I only have one set of batteries for my radio since they last so long. One thing I thought was odd is that the batteries seemed to pop out of the plastic housing in my radio for the 21700 batteries. So much so that I had to wrap the battery enclosure in electrical tape to keep them from popping out on their own. I thought it was the fault of the Radio manufacturer or perhaps it was a housing for an 18650 but it's possible based on comments of others that these batteries are a little thicker than they should be.

These batteries were ordered as backups for a pair of flashlights that we own and they perform flawlessly. The quality of the product and quick charging is well worth the price to pick a few up for yourself. We live in a hurricane prone area of Florida and feel confident that these will perform just as they have when the time arises.

They are shorter then my Fenix and imalent 21700.Bought them for my xtar pb2sl power bank. They barely fit. Some mods might be needed.I will run tests on to see true capacity, I can almost promise you the are not a true 5 ah battery.I would say just buy the tenerg, LG, Panasonic, batteries and know you’re buying quality.Too early for me to really tell. I probably wouldn’t buy again.After testing they are only 4 ah these are false advertising shame on this sellerBuy real cells, Panasonic, tenergy, lg

Perfect fit for my Fenix HM71R Head Lamp. I needed extended battery life for my head lamp and a weekend worth of use without charging. Just pop these in when running low and your good to go! Great quality!

These do NOT fit the Geekvape L200 Classic Vape mode. You need to get the flat top batteries. The button top style won't allow the battery lid on the bottom to close.I managed to make them work by squishing down the button face against a table so they would fit.

I bought these batteries to go in our camping flashlight. I put the on the charger straight out of the box. It was at about three-quarter percent full didn’t really need a charge, but I charged them anyhow and they charged so fast. I was amazed. I usually go through a couple sets of batteries when I’m camping for four days since I leave my flashlight/lantern on most of the night, but not with these batteries when I got home, I put them on the charger and they were still half charged amazed again definitely worth the money. I will buy again