Best Ride On Car 12v 18v 24v upgrades
Pink Jeep Realtree 2x4 with Bluetooth Dash Leds.
Objective to keep her running and happy.
Originally 12v rs550 12k rpm motors JR1922RXS.
RX30 is a 24v replacement. JRS1932RXS is 24v replacement
1st modification (bad battery) replaced with 2 @ 12v in parallel to provide longer run time. Great. Except new batteries turned out to be junk, which had sent me down rabbit hole trying to figure out.
2nd modification. Replaced with 2 @ 18v Ryobi. I chose ryobi because of built in protection for low voltage. Discovered jeep hood actually opens and mounted batteries under there. Route wires. Mounting the ryobi was a challenge.
3rd .modification. 12v rs550 40k motors. 18v Over-volting with high speed motors. She ran the wheels off. Problem it would get get hot and shut down. Super fast and had to keep the speed on medium mode, too fast. Unstable setup. Melted wires. Melted boards. It was awesome, and she loved it. Lol. Btw the dash electronics handled 18v no problem. It reads 20v at full charge.
Bought PWM to control speed. Nope. Might work for different setups. But not as step down to control board. Several failed attempts to stabilize current heat.
4th modification. Upgrade to 24v system. Rx30 24v controller, 24v rs555 40k motors. 12v dash blue tooth leds. Keep. 12v steering motor. Not addressed yet. Attempted 36v to 24v converter. Discovered ryobi built in protection will not allow batteries in series.
Ordered booster converter for 18v to 24v. 18v on 24v system is dog slow.
SOLVED: rx30 24v controller with 12v dash led. RELAY. Cut wiring harness pin7 (pink) and pin6 (red). Pin7 (vbat supply 24v) loop through relay to Pin6 (vdd input signal) turn ON/OFF controller.
Harness wire pink (previously connected to pin7) now connected directly to 12v battery or step-down. Hot side of relay This provides 12v rail on dash and leds.
Harness wire red (previously connected to pin6) is the return from dash ON/OFF switch supply 12v to relay. Ground side of relay use common ground.
When switched on (12v) return wire to relay engaged and 24v applied to pin6 controller turns on.
When switched off (0v) return wire to relay disabled and 0v applied to pin6 controller turns off.
Pin 7 vbat 24v output to harness. Pin 6 vdd 24v input signal to engage controller. Pin 5 unused (previously rocking horse). Pin 4 ground. Pin 3 backward ground trigger. Pin 2 forward ground trigger. Pin 1 high/low speed ground trigger or remote.
A toggle switch between Pin6 and Pin7 bypass dash. I have not received my boost converter yet.
My concern is 24v "not" over volted won't be fast enough for this 5 yr old wild child.