9V Li-ion Ni-MH Rechargeable battery Charger-- CE listed
Amazon.co.jp: ENEGON 9V Rechargeable Battery(650mAh 4PCS) +2 in 1 Micro USB Charging Cable, 006P Battery for USB Input, Compatible with Microphone, Smoke Detector, Electronic Toy, Walkie Talkie and More Devices No Charger
9 Volt Lithium Ion Rechargeable Batteries 5400mWh Li-ion USB Charging Port 9V | eBay