ExpertPower EXP12120 12V 12Ah AGM Battery - Sealed Lead Acid 12V Battery Pack, Rechargeable SLA with F2 Terminals, UPS Replacement, Wheelchair, Mobility Device, 12 Volt 12 Ah / 20HR

First thing I do is get rid of the propietrary plugs for the battery and crimp on spade connections. Use your Milwaukee batteries to test if it even works. If all works I'd get a 12v 12ah SLA from Amazon for 27$ https://a.co/d/0fDK7WuM and a 12v 3amp charger for 25$ https://a.co/d/0ad6hhKX And just let It be a good consist ride on that they get used to using before jumping any voltage. You can also add your own LED lights and radio and basically any other 12v accessory you can think of. This looks like you're ride on https://www.bestbuy.com/product/winado-12v-kids-ride-on-car-toys-licensed-porsche-cayenne-powered-electric-car-for-kids-with-parent-remote-control-led-light-white/J25L37RK5V/sku/11949892?ref=212&loc=Marketplace_22974659265&gclsrc=aw.ds&gad_source=1&gad_campaignid=22980885536&gclid=Cj0KCQjwzqXQBhD2ARIsAKrIeU8xdXlTbgchuerWUXRrKWxjIMgVT5i14bSiE8gh01614vPSID3K8KUaAiZAEALw_wcB

Whoa people, this is for a 2 year old. Clean it up, paint it cool colors, maybe use some spray in bedliner from Harborfreight on the flooring. You can add basically any 12v accessory led's, headlights, radio, etc.. Best thing you can do is get a 12v 12ah battery and a decent charger. The speed and reliability should last you until she is abou 4-5 then jump to the drill batteries for the increased speed and torque. amazon.com/ExpertPower-EXP12120-Volt-Rechargeable-battery/dp/B00A82A2ZS/ref=sr_1_8?crid=210NTOVL81E0U&dib=eyJ2IjoiMSJ9.OHDG-V0TU6NNui-OAy74_Lh51YsTmOPPU3z33NtEN2UbaaCj7itwR9N5IVdfbBP8PF1l04CJGsw1SXMycooszCgKdXaDd8f7ZtOn9UQQiPNPugiRV3-w5Wcbw6NXTOIaZx9ANVsU7lndFXIYMwdKPLNGfNjzjwMPsr36VxlH9BZnuvbocBXSAnzMY0WxIQ-lP5J_PosV5-4PxM_vZr2L12ZkbPNVaSHUZL684YXmdYhyWRzLS6i07C5NWTWKTVRuczDtHjCFxIUtF2JpGWC8WrmRlhxzAioha7igrHACDe8.iuqQIrkQ-rp8t4-pi857aMPrb35TrYXR4iEoziMChp0&dib_tag=se&keywords=12v+12ah&qid=1777661555&sprefix=12v+12ah%2Caps%2C311&sr=8-8 https://www.amazon.com/Pack-AMP-Battery-Charger-Automotive/dp/B0DCDWXG6N/ref=sr_1_4?crid=3DZA0OB920E1A&dib=eyJ2IjoiMSJ9.NIOQY6L0827L4MEPU4MZtw4at6-cWOQj5D_ne1sTjYdTETtiCdy8EQwB0Ji7Og2AXCnNdcK6KQSoTC5eW4vQBsU948XqCMJnfK_IH9sVlJYsENQ3-SSKgi3RcCFKIGeLIBK1TsODfhHKIg7sHO5sjxONEX8TP3eCWFwQs5C65JTkx501ZWq9IoRr5tJGMWS6R4ec5DZIadkBjX3A39uCZ9FAGSAnrtS0KCfQXZm4svE.COZVoO6PcM8u95V4h9b61X_XrriOhgMshrBkHICq-u4&dib_tag=se&keywords=12v%2B3amp%2Bcharger&qid=1777661578&sprefix=12v%2B3amp%2Bcharg%2Caps%2C437&sr=8-4&th=1