Amazon.com: TURPOW 2 Packs 6.5 Ah Replace for Makita 18V Battery & Double Rapid Charger Combo, Compatible with BL1815 BL1830 BL1840 BL1850 BL1860 for Makita 18Volt Batteries LXT Lithium ion Cordless Tools :
Makita 18v 6.0 8.0ah Rechargeable Battery For Makita Power Tools With Led Li-ion Replacement Lxt Bl1860 1850 Volt 6000mah - Rechargeable Batteries - AliExpress