Makita 2BL1850 18 V 5.0 A Li-Ion LXT Battery - Black (Pack of 2) : Amazon.co.uk: DIY & Tools
Amazon.com: Amityke Battery Adapter,Power Wheels Adapter for Makita 18V/14.4V Battery BL1820, BL1830, BL1840, BL1850 with 14 awg Wires Power Convertor for DIY Ride On Truck, Robotics, RC Toys and Work Lights :