Magicshine Monteer 6500S Zeus Light Battery: 4*5000mAh with USB-C fast charging and can also be used as a power bank Max Lumens: 6000 Runtime: 2:00 to 40:00 Waterproof: IPX5 Weight: 142g (exclude battery pack) I've only used this light twice and it's way more than I need, since I only ride in the daytime and only use flashing mode. Note that I live in the Parksville area.