30,000mAh Rechargeable Battery for Race Clocks & LED Displays Power your race clock anywhere with our high-capacity 12V 30,000mAh rechargeable lithium battery pack. Designed for race directors, timing companies, schools and event organizers, this battery allows your RunningClocks.com race clock to operate for over 24 hours on a single charge. Whether you're timing a 5K, marathon, cross country meet, cycling race or triathlon, this battery eliminates the need for extension cords and nearby electrical outlets. Perfect For Running race clocks Finish line timers LED race clocks Marathon timing Cross country meets Track & field events Triathlons Cycling races Portable LED displays Outdoor sporting events What's Included 30,000mAh Lithium Polymer Battery Pack Waterproof protective carrying case 12.6V Smart Charger 9-foot extension cable Ready to use out of the box Features ✓ Powers most race events for over 24 hours ✓ Rechargeable lithium polymer technology ✓ Waterproof carrying case included ✓ Built-in overcharge protection ✓ Over-discharge protection ✓ Short-circuit protection ✓ Lightweight and portable ✓ Ideal for outdoor events ✓ No generator required Technical Specifications Battery Type Lithium Polymer Voltage 12V DC Capacity 30,000mAh Input Voltage 12.6V DC Output Voltage 12V DC Battery Dimensions 145 × 73 × 75 mm Weight 2.1 kg (4.6 lbs) Maximum Discharge Current 10A Maximum Charge Current 5A Charging Time Approximately 13–15 hours Cycle Life 500+ recharge cycles Operating Temperature -20°C to 60°C Charging Instructions Connect the supplied charger to a wall outlet. Plug the charger into the battery pack. The charger LED will glow red while charging. When charging is complete, the LED changes to green. A full charge typically takes 13–15 hours depending on battery level. Built-In Battery Protection The battery includes integrated electronic protection against: Overcharging Over-discharging Short circuits Overcurrent Storage Recommendations Store in a cool, dry location. Avoid temperatures above 35°C (95°F). If storing for several months, recharge periodically. Recycle at participating Lowe's or Home Depot locations. Safety Information Use only the included charger. Do not disassemble, puncture, crush or expose the battery to fire or excessive heat. Never immerse the battery in water. Always charge on a non-flammable surface while attended. Why Choose This Battery? Unlike small consumer battery packs, this high-capacity 12V lithium battery is designed for powering professional race clocks and LED timing displays throughout an entire day of competition. It gives race directors the freedom to set up anywhere without searching for electrical outlets or running long extension cords.
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