Amazon.com: Makita BL4040 40V Max XGT 4.0 Ah Lithium Ion Battery (2 Pack) : Tools & Home Improvement
Amazon.com: Li ion Battery Charger for Makita, 10.8V-12V Lithium ion Batteries with LED Indicator for DC10WA TD090D P330DWE for CL104Z CL100DW Vacuum Cleaner, Power Supply Charger (US Plug) : Tools & Home