HiQuick 2-slot 9V Battery Charger, Fast Charging Function, Type C and Micro USB Input, with 2 x 280mAh 9V NI-MH Rechargeable Batteries, Battery and Charger Set: Amazon.co.uk: Electronics & Photo
9V Rechargeable Battery 1200mAh 6F22 Micro USB 9v Li ion Lithium Batteries for Multimeter Microphone Toy Remote Control KTV|Rechargeable Batteries| - AliExpress
9V 6F22 Micro USB 1200mAh rechargeable lithium ion battery for smoke alarm wireless microphone Guitar EQ Intercom Multimeter|Replacement Batteries| - AliExpress
9 volt battery snap connector
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