RELIABLE POWER - These 18650 batteries deliver a consistent 3.7V output, ensuring your devices operate smoothly and efficiently, providing peace of mind during critical tasks. EXTENDED RUNTIME - Boasting a 3500mAh capacity, these Lithium-Ion batteries offer long-lasting power, reducing the need for frequent replacements and keeping your devices running longer. VERSATILE CHARGING - The included CM-4 quad charger supports AC 100V-240V input, making it perfect for international use, ensuring your batteries are always ready no matter where you are. OPTIMIZED PERFORMANCE - Designed with a 12.95Wh capacity, these batteries provide an excellent balance of power and longevity, enhancing the performance of your compatible devices.