4Pcs 3.7 Volt 18650 Rechargeable Battery, 18650 Battery 3500mAh Flat Top for Remote Control Toy, Headlamp, LED Flashlight, Mini Fans, Shaver (Purple)

Works great

Bought a total of 12 of these. Have had 2 completely dead (won't charge). Had 2 others with about 50% capacity of the rest. Of the good ones, they last less time than my 4 year old batteries which were 3000mah. Will not purchase again.

In my tests, these batteries are about 50% of the rated capacity.At 300ma load the capacity was 1880 mAh.At 425ma load the capacity was 1873 mAh.At 850ma load the capacity was 1880 mAh.

Trash battery life is garbage

Had these for awhile now, probably not designed for what I'm using them for, but for the price overall not a bad deal.