Pros: 1. You can use M4p as a standalone meter (without any psu in the field) to check the battery status!

2. Pretty powerful charger considering it's size and with a built-in fan but also depended on the psu you hook it on.

3. If you need to drop the battery voltage from let's say 4.2v (full charge) to a lower state (3.85v storage charge) you can recycle the extra voltage back to an other battery that you will plug to the input port.

4. You can use M4p as a powerbank if you have the xt60 to usb-c cable (not included) to charge any usb-c device.

Cons: 1. I'm fine charging my 2s batteries on 1 or 2 amps but my qc4+ combo just makes the charger go into a bootloop. So I HAD to use a qc3.0 cable to get it working in 12v instead of 20v that I would normally get in order to charge my batteries at 5A if needed.

2. Don't bother looking for a firmware upgrade since ToolkitRC doesn't support any firmware upgrades for the M4 Pocket.

3. The cables of a small mAh battery probably won't reach between the main and the balancing port. It happened in my FC650s 1600mAh stock battery.

4. You need a converter if you wish to charge t plug batteries like I did.

works perfect so useful and perfect for charging when traveling small and powerful 😁