Recommended · for beginners
New TP4056 Lithium Cell Charger Module with Battery Protection
Why people recommend it
Julian Ilett examines the TP4056 lithium charger module with DW01A protection; cited for its fixed cut-off voltage and for using the output while charging.
Watch for: protection IC details from 1:00
In their words
New TP4056 Lithium Cell Charger Module with Battery Protection
sekdiy on arduino.stackexchange.com, Mar 2016. CC BY-SA.
I think this circuit has battery output and you can use while charging you can see in this video ([video]).
user3866081 on arduino.stackexchange.com, Aug 2019. CC BY-SA.