XTAR VC4S QC 3.0 LCD 4 Bay Li-ion, Ni-MH USB Battery Charger

It works very stable.

Only a USB cable, but it needs at least 2A or 3A to do a good charging job. USB 1, 2, and 3 will be anemic and unsatisfying, only USB 3.1 Superspeed will have the power to charge this from your computer. Would appreciate it if they bundle it with a strong enough wall wart for the U.S. market.