Amazon.com: Synergy Digital Power Tool Battery, Compatible with DeWalt DW990K-2 Power Tool, (Li-ion, 14.4V, 3000mAh) Ultra High Capacity, Replacement for DeWalt DE9141 Battery : Tools & Home Improvement
Original Replacement Battery 14.4v 3000mah For Irobot Roomba 805 890 860 615 650 655 552 970 980 760 770 Vacuum Cleaner - Mobile Phone Batteries - AliExpress