14.4 volt battery and 14.8 volt lithium ion battery pack 4S polymer - CMX
Amazon.co.jp: Makita BL1460 14.4 V Battery, 6.0 Ah Compatible Battery, Set of 2, LED Remaining Indication, High Dosage, Compatible with BL1430, BL1440, BL1450, BL1460B, Lithium Ion Battery for Electric Tools : DIY,