Nitecore NL1836R USB-C rechargeable 18650 Li-ion battery, 3600 mAh | Advantageously shopping at Knivesandtools.co.uk
18650 Solar Light Rechargeable Battery Lithium-Ion 3.7V 2000mAh
24V DC 60W 72Wh 3000mah Rechargeable Lithium Ion, Li-ion Portable Battery Pack, Power Bank for CCTV Cameras, LED Strip Lights and more. With UK Plug Charger: Amazon.co.uk: Electronics & Photo