<b>HERISKEER produces power tool batteries of the best quality and stability owing to our products are made with the highest quality materials, and all HERISKEER battery packs have been tested by the manufacturer before ship to our customers.<br><br> Compatible with Milwaukee M18 System (18-Volt) Lithium-ion Battery Cordlesss Power Tools:</b><br> For Milwaukee M-18 Circular Saw / Blower / Drill / Driver / Impact Wrench / Hedge Trimmer / Pipe Threader / Braking Grinder / Recip Saw / Band Saw / Hackzall / Chainsaw / Jig Saw / Nailer / Drywall Screw Gun / Rotary Hammer and so on...<br><br> <b>Replace for Milwaukee M-18 System 18V Lithium Battery P/N :</b><br> 48-11-1852 / 48-11-1850 / 48-11-1840 / 48-11-1890 / 48-11-1828 / 48-11-1820 / 48-11-1811 / 48-11-1815 / 48-11-1820 / 48-11-1822 / 48-11-1841 / 48-59-181 / 48-59-1850 / 4932352071 / 4932430063 / C18B / Li18 / M-18 / M-18B / M-18B2 / M-18B4 / M-18BX ...<br><br> <b>Package List:</b><br> 2 x 6.0Ah 18V Battery for Milwaukee M-18 18v Cordless Tools<br> 1 x Battery instruction manual book<br><br> <b>Battery Maintenance:</b><br> 1. Always remove battery pack form your tool when you are assembling parts,making adjustments,cleaning, or when not being used for an extended time.<br><br> 2. If you don't plan on using the Power Tool Battery for a month or more, store it in a clean, dry, cool place away from heat and metal objects. Ni-CD, Ni-MH and Li-ion batteries will self-discharge during storage. Remember to recharge the batteries before use.