Package: 4 pack rechargeable 9V battery and a 9V li-ion battery charger (USB Input)
EBL9V batteries consist on quality items, top energy density, and stable exist of hydrogen for expanding the space of crystal lattice, greater than general batteries.
High Capacity Battery: 600mAh 9V rechargeable li-ion batteries, please note that the full charge voltage of all 9V lithium-ion (Li-ion) batteries is 8.4 volts.
Easy to read: Red light means charging, green light means fully charged.
Recommended for smoke alarms, professional audio and medical devices