Fhybat Replacement M18 Battery Charger for Milwaukee 14.4v-18v Red Lithium ion Rapid Charge 48-11-2230 48-59-1812 This charger is compatible with milwaukee M18 14.4V-18V Lithium-Ion Batteries Charges all M18 batteries and Charges batteries up to 40% faster. Reduces time to manage charge cycles by sequentially charging the battery packs Charger communicates with the battery pack to ensure a full charge and battery protection Excellent service --- For 30 days after the date of purchase, return your undamaged Fhybat product and receive a refund for ANY reason.