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
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Makita 18V LXT Lithium-Ion Brushless Cordless Hammer Drill and Impact Driver Combo Kit (2-Tool) w/ (2) 2Ah Batteries, Bag XT269R - The Home Depot
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High Capacity Rechargeable Li-lon Battery for Makita Power Tools 6Ah 4Ah 2Ah | eBay