Battery operated pump, extra battery

• Lithium Battery: These are modern, lightweight, high-energy-density rechargeable batteries
• 12V (Voltage): This is the electrical potential of the battery. The pump motor is designed specifically to run on 12 volts DC.
• 2500mah (Capacity): mAh stands for milliampere-hour. It measures the energy storage capacity. A 2500mAh battery can theoretically provide 2500 milliamps (or 2.5 amps) of current for one hour, or 1.25 amps for two hours, depending on the pump's power draw.
• Recharging connector 12.6V, 1A: This refers to the charger/adapter specs.
  • 12.6V: The charger needs to put out 12.6V to fully charge a 12V lithium pack.
  • 1A (1 Ampere): The charging speed. A 2500mAh battery charged at 1A will take approximately 2.5 to 3 hours to fully charge (2500mAh / 1000mA = 2.5 hours + charging efficiency time)