Vifly WhoopStor 3

Vifly WhoopStor is an advanced charger for up to 6 1S batteries that shouldn't be missing from any enthusiastic whooper. In addition to charging, WhoopStore can also use storage mode to store batteries. So you can choose whether you want to fully charge the battery or get it into storage. In addition to charging to storage, WhoopStore can also discharge fully charged batteries to storage. The charger has 6 channels. Each channel has both a BT2.0 and PH2.0 connector (don't plug batteries into both at the same time). 

Another big advantage is the small LED display. The display shows the voltage of each battery, the input voltage of the power supply, and the target battery voltage. The target voltage can be changed between 4.2V for standard Lipo batteries and 4.35V for HV batteries. Storage voltage is 3.85V. In addition to the target voltage, the current is also adjustable and ranges from 0.2-1.3A. 

Power supply to the charger is possible in several ways. You can use the coaxial DC connector or XT60 to connect a larger battery or power supply in the 7-25V range (2-6S). Another option is to use the USB-C connector and a power supply with QuickCharge or PD charging support (9/12V). 

WhoopStor in the third version received a number of improvements. Of note are a higher charging current of up to 1.3A (previously only 0.9A), a fan and larger heat sink for better heat dissipation, and a new cover that protects the components inside. Also pleasing is the addition of a beeper that sounds when charging is complete and a new, better display.