Product overview 16cell 18650 charging case that converts standard 18650 cells into a capacity power source with integrated features for portable and emergency use. Holds up to 16 x 18650 batteries (batteries not included). Key benefits Significantly increases runtime by combining multiple 18650 cells for larger capacity and longer use between charges. Builtin digital display shows remaining power status so you can monitor charge at a glance. Integrated camping light provides hands illumination for outdoor use or emergency situations. Simple, modular solution for hobbyists, DIYers, technicians, and home users who want to build custom powerbanks or backup power supplies. Durable construction designed for stable, longlasting performance in regular use. Compatibility and important safety notes Compatible only with 18650 lithiumion cells. Batteries are not included and must be purchased separately. Use only 18650 cells with a flat positive terminal. Do not use button cells. Pay close attention to battery polarity when installing — install each cell in the correct direction (positive/negative). After installing batteries, fully charge the pack to activate the cells before drawing output power. Function and performance Acts as both a charging case and a modular powerbank enclosure for multiple 18650 cells. Digital power readout helps you manage remaining capacity and plan recharges. Builtin camping light adds practical illumination without needing a separate flashlight. Designed for reliable, repeatable performance through regular charge/discharge cycles. Use scenarios Home emergency backup: Assemble a capacity backup power unit for lights, radios, and small appliances during outages. Camping and outdoor trips: Combine 18650 cells to create a longrunning power source for lights, phone charging, and small devices, with an onboard camping light for campsite use. DIY and professional projects: Use the case as the core component for building custom powerbanks, testing battery configurations, or supplying portable power for tools and field equipment. What's included / final reminders Charging case only; 18650 batteries must be bought separately. Confirm flat 18650 compatibility and correct polarity before use. Fully charge newly installed batteries to activate them before drawing power.