6 Pack 3.7 Volt 18650 Flat Top Rechargeable Batteries,Lithium Battery 3300mAh for Flashlights, Headlamps, Doorbells, RC Cars,Outdoor Garden Lights

I had my Flag light for 2 1/2 years, but when the batteries lost there charge, I checked with the seller and he offered to sell me another light. For $200, I said not a chance, the quality was fair but battery life was poor. I know the Michigan winters are hard on battery operated devices so I was looking to save money, so I disassembled the light, the batteries were labeled with all the info you needed, so I looked around and found these comparable batteries. Then bought a small battery spot welder, put them in and Wa-La, they work great, they stay brightly lit for more hours than the original batteries. It was so much cheaper to replace the batteries and not the light, even when they say the batteries are not replaceable. The only pictures I have are of the light because I installed the batteries a while ago and I did not take pictures of them. I wish I would have taken pictures of the process of installing them. I did not want to write a review till I was sure they worked as well as the originals.These work fantastic

Super thrilled with my purchase I am using 2 of them in my vaperesso now. Fits perfectly arrived 1/3 charged took very little time to fully charge and hold a good charge the are as good if not better than my Imren batteries or Efest. Buying more

Testing results in the picture. Tested as 2.7ah so their claim of 3.3ah is a little overstated. Really good resistance. In all, I’m happy to use this product in my projects and the data seems to point to these being able to hold up with a reasonable price.

these work perfect in both my mod and my wife's no issue. perfect for the price.

These batteries are incredible compared to the last ones i have. My older ones where probably lesser quality and did not last long, these seems to really last, very happy with this purchase. I wanted to try this battery without a head button, because my other batteries barely fit in, so gave these a try. Just need to make sure you insert it in the right polarity. Super happy with this purchase. Great batteries.

The 18650 battery is fairly universal in rechargeable items; in fact, even electric cars use them (albeit in large quantities). I have enough such items that every once in a while one dies. I've actually used a couple of these to make my own rechargeable battery pack - I took the controller out of a failed Lithium Polymer battery (the kind that swell up when they get old) and soldered it to a couple of these. I would say each one of these provides about 65% of an iPhone 14 pro charge.If you really want to be slick, you need a small spot welder to weld the contacts (these aren't like AA/AAA batteries; they're flat on both ends). But I've been able to solder to them with a little patience.These have served me well and it's great to have some on hand. If you're the kind of person who reads "no user serviceable parts inside" and sees a challenge, these are for you.

Excellent battery. Get yourself a dual charger with readout to manage them better.

I needed these batteries for solar rechargeable lights on my property. They have terrible battery life. When the sun goes down and the lights come on, they last less than an hour. Charge all day in the clear view of bright sun, and stay lit for less than an hour. The batteries that came with the lights lasted all night long. I purchased these as cheaper replacements, but they ARE NOT WORTH THE MONEY. My advice, don't buy these.