Received, charged and now testing on the Joule thief.The cells built-in circuit protects against over and under voltage. Just wondering about the "Lithium"claim since all the lithium I know that is rechargeable is 3.7 volts not 1.5 volts.
Maybe it really is 3.7 volts, but the output is regulated down to 1.5 volts to fit this form factor.
https://www.dropbox.com/s/05gfhdpbj9jgwiv/20211003_181655_temp.jpg?dl=0