USB Type-C 5V 2A Step-Up Boost Converter for Charging and Discharging

It's mentioned in their website that "The USB Type-C 5V 2A Step-Up Boost Converter Module efficiently boosts voltage for charging and discharging applications". But I find that USB C is not bidirectional. It can be used only for charging & not for discharging.

Charging the battery at 2A, discharging works but have not tested at full 2A. Overall satisfied.

one of the best power bank charging module i connected it to two new 2200 mah 18650batteries in parallel n it's working well ...i ordered two of them separate usb connector gives me advantage to making power bank more compact

Working fine.
Doesn't heatup for my setup.
I used four 18650 cells connected parallel to a 1s BMS (enough for protection i guess). Then from bms connected to Tp4056 module output/input pins.Then Soldered Usb a for output. Perfectly charging and discharging (Tried only once). For few hrs of usage not much heat observed in my condition. Product was nice.

Although that Four cell holder was in series i just soldered it into parallel (Soldering was headache) but after that everything was ON.

Only one issue observed: when i try to take output my phone automatically changes to normal slow charging mode (6 to 10hrs for full charge showing).Also sometimes output also iam not getting just blinking four led/1 led for 5 times then off donno why.Anyways it could be my old battery from laptop issue (its been there for 1 year at 3.7 V to 3.8V)

BMS - Not much heating observed
TP4056 - 5V 2A Usb c module , not much heating and stuff
4 cell holder Case - since it was series i had to resolder all.

It's small and convenient but very much heating while charging, so I disconnected the charger again and again