This project is going to have to last for a year or longer. I'm using 4 of these in parallel to power a pi-0W set up in a time lapse photography situation. As an engineer, I appreciate it when you just give me the facts and let me make a decision based on my review. I like the fact that there's a data sheet. ![]() It seems you can advertise just about anything you want online and get away with it and so I was pleased to find these. I found plenty of 18650's suggesting as high as 9900 mah of capacity and at a lower price. ![]() I'd be happy to test some of these cells as well ) Finally, I will be able to test some 18650's! If you like, I can post results with different cells after I test them. From the reviews that are available, its measurements aren't perfect but they should be good enough. The capacity is 2 cells at a time (It charges and tests both at the same time.). Afterwards it charges them up so you have a fully charged battery with a numerical result waiting for you. It charges up the batteries and then discharges them at 0.5A to make the capacity measurement. To combat this, I have purchased liitokala lii-260 LCD 3.7V 18650/26650 Battery Charger and it should be here any day now. They get away with it because not many people have the capability to test them. The outrageous claims of 40 mah on those cells are a fabrication. It's kind of sad because real Trustfire batteries are actually pretty good. ![]() In particular, the Trustfire brand is faked alot. I've probably purchased around 40 batteries of various brands over the last few years. Most of the 18650 batteries on eBay are junk. South Georgia and the South Sandwich Islands.This product has shipping restrictions, so it might have limited shipping options or cannot be shipped to the following countries:
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