5V 9V 12V UPS 3*18650 Lithium Battery Soldering Free Kit Surveillance Camera Router Emergency Power Supply DIY Loose Part

Description:1. Solder-free design allows users to freely disassemble and replace batteries2. Features DC equalization UPS functionality for automatic charge/discharge management without manual intervention3. Supports common voltages of 5V, 9V, and 12V for devices like optical modems, routers, and surveillance cameras4. Rigorous quality control ensures long-term stable operation and extended service life5. Compact size for easy portability with stable performanceProduct Specifications:Capacity: Battery compartment capacity: 33.7V3400mAh = 37Wh (Batteries not included)Output Power: Without considering UPS input, independent output of 12V 3A, 9V 1A, USB 5V 2-3AVoltage Regulation: Unregulated; 3 batteries in series for direct output. Full charge at 12.6V, low voltage protection at 8V. Voltage fluctuates with remaining charge.Application Type: Specifically designed for MODEMs, routers, and surveillance camerasBattery Type: 3.7V cylindrical 18650 batteryUPS Input Voltage: Charges within 12-13V range; must not exceed 13V. Below 12.6V prevents full charge. Recommended: 12.7VUPS Input Power: Input adapter power must meet ≥ load power + internal battery charging power (6W); higher power ensures greater stabilityProtection circuit parameters:Overcharge protection: 4.25V3Undervoltage protection: 2.75V3Overcurrent detection voltage: 0.1V ± 0.025VOperating temperature range: -20~60℃DC interface standard: DC5.52.1mm (positive inner, negative outer)Important Notes:1. Connect the spring to the negative terminal and the copper plate to the positive terminal. Do not reverse polarity, as doing so will cause burnout!!!2. Use high-quality batteries and ensure strict pairing. Each individual cell in the battery pack must have as consistent parameters as possible.3. This product is only compatible with flat-top 18650 batteries. Pointed-top batteries longer than 2mm cannot be used.Package Contents:Solderless Battery Case1