Makita 40V Max XGT Brushless Cordless Rear Handle 7-1/4 in. Circular Saw Kit (4.0 Ah) with bonus 40V Max XGT 4.0Ah Battery GSR01M1-BL4040 - The Home Depot
Makita BL1041B 12V 4.0Ah Lithuim Ion Battery (CXT-Series) – vertexpowertools
MAKITA 18V LXT Lithium-Ion 4 Amp Battery w/FUEL GAUGE & RAPID Charger | USA Tools & MORE
Makita CXT 12 V 4 Ah Lithium-Ion Battery 1 pc - Ace Hardware