Hitech Rechargeable Li-Ion 9V Batteries let you save money. Compared to lithium, alkaline, or heavy-duty 9V batteries, the Hitech Li-ion 9V battery is cost-saving and more enviromentally friendly. You may recharge the battery up to 500 cycles, and Li-ion batteries are free of memory effect. Battery is 7.4V-8.6V after full recharge. A full recharge cycle takes about 2-3 hours.
9V are used in various toys, two-way radios, testers, smoke alarms or gas detectors, RC controllers, electric instrument effect pedals and active pickups, electric clock backups, wireless microphones, high-power mini fans, etc.