Running a Makita 18V 2Ah (also tried a 9Ah) battery to a voltage reducer on my sons Peg Perego ground force tractor. Everything besides 2nd gear works. When I remove the reducer
18V 9AH BL1890B replacement battery for Makita with LED 10-piece/compatible with Makita 18V BL1830B BL1860B BL1820 LXT-400 – Dasbatteries
18V 9AH BL1890B replacement battery for Makita with LED/compatible with Makita 18V BL1830B BL1860B BL1820 LXT-400
BL1830 18V 5Ah 6Ah 9Ah Li-ion Battery for Makita Battery BL1860 1850 LED Charger | eBay
18V 9AH BL1890B replacement battery for Makita with LED 6 pieces/compatible with Makita 18V BL1830B BL1860B BL1820 LXT-400 – Dasbatteries