Do you have a bug-out bag or an emergency kit? The NITECORE 21700 Intelligent Battery System is a perfect 3-in-1 flashlight lantern, battery and charger solution, as an EDC item or a part of a survival kit. It comes with a 5000mAh NL2150HPi rechargeable 21700 battery, a magnetic high CRI flashlight lantern ML21, which snaps onto the battery and provides 80 lumen of light great for outdoor activities like camping, reading, or signaling for up to 19 hours. A thumb size dual-function mini magnetic charger MBP21 can snap onto the battery to charge the battery, or phones, or any electronic devices. All of these items are neatly packed in a hardshell case, perfect for safe storage and everyday carry.