36Wh Compact Rechargeable Battery 9600mAh (3.7V) skin the battery poles are located

the battery poles are located on the same end - this allows you to flip the battery to eliminate the possibility of switching on the lamp unintentionally in your bag or luggage

For those who go farther

and a whistle or a first aid kit

This makes the Bright As Day 1300s a very popular choice for ultra runners and other athletes needing a powerful but light headlamp for short to medium duration activities

If you want to go superlight

36Wh Compact Rechargeable Battery 9600mAh (3.7V) skin the battery poles are locatedThe biggest of our Compact Collection, this USB C rechargeable battery is compatible with our Bright As Day 800, 1300 and 2000. If you are ordering this for an older Bright As Day 700, 1200 or 1800, please specify upon ordering. We will provide a short extension cable. Not compatible with Noctia Noctia Max Not compatible with Bright As Day 3000 4000 Tech Specs Type Rechargeable lithium ion battery Capacity and voltage 9600 mAh 3. 7 V (36 WH) Cell(s) 2