Mobile Warming® exclusively utilizes high-quality lithium-ion batteries to ensure durable power and longevity. Our batteries are engineered to power your Mobile Warming product for hours, ensuring you stay warm and comfortable. The premium 3.7-volt Bluetooth battery is exclusive to our heated socks. It requires the MW-Connect® app for operation.

Features:

• Two batteries included
• Voltage: 3.7 volts, 2,200 mAh
• Input: Micro USB 5V at 0.8A
• Charging time: 5 to 6 hours
• Size in inches: 2.8 inches x 1.8 inches x 0.5 inches
• Size in metric: 73 mm x 47 mm x 13.5 mm