Milwaukee 48-11-1822 Dual M18 Genuine OEM 3 Amp Hour 18V Lithium Ion XC Extended Capacity Battery with Redlink Intelligence and Extreme Weather Performance (2 Pack of 48-11-1828) N/A Imported EXTREME WEATHER PERFORMANCE: These batteries can function in temperatures as low as 0 degrees Fahrenheit (-18 degrees Celsius), letting you use your tools year-round ONBOARD FUEL GAUGE: You can see how much fuel the batteries have charged up with the LED panel on their sides, keeping you aware of when you need to recharge FADE-FREE POWER: These will power your tools up to full strength, even when the batterys charge is low REDLINK INTELLIGENCE: These batteries will communicate with the M18 tools theyre plugged into, keeping them from overheating, resulting in a more efficient workflow VERSATILITY: Over 40 tools in Milwaukees M18 line can be powered with these batteries, giving you power from the jobsite to the campsite