I bought the batteries listed below but when I measure them with a multi-meter they read 7.4V rather than 3.7V.
I was hoping to use a TP4056 to charge the batteries and an MT3608 to step-up the voltage to 5V but this doesn’t work if the batteries are outputting 7.4v.
I have bought 3 batteries and they’re all the same voltage.
Any suggestions / explanations?