BONAI 9 V Block Battery Charger 2 Slot LED Battery Charger Quick Battery Charger 9 Volt Battery Charger for 9 V Li-Ion / NI-MH / NI-CD Rechargeable Batteries: Amazon.de: Electronics & Photo
VARTA Rechargeable Ready2Use Pre-Charged 9V Block Battery (9V, 200 mAh), rechargeable without memory effect - ready for immediate use, Pack of 1: Amazon.co.uk: Electronics & Photo
GP Lithium 9 volt block batteries, 9 V e-block, 10 year battery long life (5 block batteries), ideal for e.g. smoke detectors, fire detectors, microphones etc.: Amazon.co.uk: DIY & Tools
edi-tronic 9V Forte ER9V Lithium Block Battery Smoke Detector 1200 mAh Fire Detector E Block Battery Durable: Amazon.de: Electronics & Photo
9 V Block Batteries, Keenstone Pack of 3 PP3 Li-Ion 800 mAh Rechargeable Battery with 3 Slots Charger, USB Charging Cable for Keyboard Microphone Smoke Detector: Amazon.de: Electronics & Photo