Compatible With 48-11-1815, 48-11-1820, 48-11-1828, And 18-Volt Cordless Power Product Details The M18 battery is suitable for Milwaukee 18V cordless power tools and is compatible with all Milwaukee 18V lithium-ion batteries such as models 48-11-1850, 48-11-1812, 48-11-1828, 48-11-1820, 48-11-1860, 48-11-1840, and 48-11-1815 Capacity and Fast charging: These M18 batteries are a replacement for Milwaukee M18 batteries. They have been upgraded to have a capacity of 5000mAh, using ten high-performance lithium batteries. The rapid charger has an AC input of 100V-240V and an output of 12V-18V, capable of charging 2.0Ah batteries fully in 30 minutes and 5.0Ah batteries The built-in protection safeguards against potential damage from overcharging, ensuring a safe, stable, and reliable performance. It delivers consistent power even in tough jobsite conditions, and the battery and charger chips prevent overcharging and prolong the battery life. It offers long-lasting performance and durability. Please avoid charging the M12 and M18 batteries simultaneously. It is recommended to store them in a clean, dry, and cool location, away from any heat sources and metal items. It is advisable to use the batteries within a temperature range of -10? to 45?. The shell of the batteries is constructed from durable plastic and has successfully passed a drop test from a height of 1.5 meters. Additionally, the batteries have obtained certifications such as FCC, CE, and RoH. We offer a 90-day money-back guarantee and a 12-month warranty. If you have any inquiries regarding the Milwaukee 18-volt batteries and charger, feel free to contact us anytime using your order ID. We provide prompt customer support services 24 hours a day, 7 days a week. Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.