Uploaded February 2021 | Updated September 2026, 7 hours ago
My friend picked up a kids 6V BMW Z4 electric car that someone had thrown out. She wanted to get it running for your grandkids. The car had several broken wires and a dead lead-acid battery. I got things working and designed an adapter for a Ryobi 18V One+ battery to use with a 6V Step-down DC-DC converter.
The 3D Print files:
* prusaprinters.org/prints/54822-ryobi-18v-battery-kid-electric-car-adapter
Parts Used:
* 12/24V to 6V DC-DC Converter ( amzn.to/3amiBQV )
* 9Ah Ryobi 18V One+ Battery ( amzn.to/36wUHRU )
* BMW Z4 Kids 6V Electric car ( nitrorcx.com/28c-81800-bmw-z4-white.html )
* Sealed Lead-Acid 6V Battery ( amzn.to/2NUj45x )
* Ryobi replace terminals ( partswarehouse.com/Ryobi-Contact-Plate-Holder-Assembly-RY-300001044-p/hm-300001044.htm )
FTC Disclaimer:
We may earn commissions for purchases made through the links below.
As Amazon Associates we earn from qualifying purchases.
My friend picked up a kids 6V BMW Z4 electric car that someone had thrown out. She wanted to get it running for your grandkids. The car had several broken wires and a dead lead-acid battery. I got things working and designed an adapter for a Ryobi 18V One+ battery to use with a 6V Step-down DC-DC converter.
The 3D Print files:
* prusaprinters.org/prints/54822-ryobi-18v-battery-kid-electric-car-adapter
Parts Used:
* 12/24V to 6V DC-DC Converter ( amzn.to/3amiBQV )
* 9Ah Ryobi 18V One+ Battery ( amzn.to/36wUHRU )
* BMW Z4 Kids 6V Electric car ( nitrorcx.com/28c-81800-bmw-z4-white.html )
* Sealed Lead-Acid 6V Battery ( amzn.to/2NUj45x )
* Ryobi replace terminals ( partswarehouse.com/Ryobi-Contact-Plate-Holder-Assembly-RY-300001044-p/hm-300001044.htm )
FTC Disclaimer:
We may earn commissions for purchases made through the links below.
As Amazon Associates we earn from qualifying purchases.










