Yes – I do it all the time — If you’re still using SLA batteries, Go with Lithium — If you have the capability ,build a battery pack — My grandkids have PowerWheels that run 18v and 24v – We also have Razor scooters the same way — I have one Razor 36V converted , does 28mph
What is the voltage of the Huffy and the size of the battery/ compartment
One of the easiest conversions is to use Tool Battery Packs – they sell the adapter plates
You have to do some Research – Look around Youtube first — I asked what voltage battery — If it has a controller or is it like a Power Wheels ( direct to motor )
Easiest – If 24v ---- 24 v drill / tool packs with the correct adapter plate to use them