Power Your Hot Wheels Booster Without D Batteries

Hot wheels boosters are a blast, but constantly replacing D batteries can be costly, wasteful, and boring! Here are some creative alternatives to power your slot car booster without D batteries.

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Disclaimer: I am not an electrician. Test and supervise if you're using these with kids. Thanks for using the affiliate links in this post.

 

1. Rechargeable D Batteries

 

The simplest option is to switch to rechargeable D batteries. These provide the same voltage (typically 1.2V to 1.5V per cell) as disposable D batteries, but they can be reused hundreds of times, saving both money and the environment. Just make sure your charger is compatible with the battery type (usually NiMH or Li-ion).

 

Supplies:

• Wowpower Rechargeable Lithium D Cell Batteries

 

2. USB Battery with Alligator Clips

 

Another option is using a USB power source with alligator clips to connect directly to the battery terminals in the booster. USB outputs 5V, which is slightly more than the 3V typically supplied by two D batteries (1.5V each). While some boosters may tolerate the extra voltage, it’s a good idea to test cautiously to avoid overheating or damaging the motor.

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Supplies:

• 22 PCS Metal Alligator Clips

• Old USB cable to cut up

• Wire Cutter and Stripper

 

3. USB with Alligator Clips and a Step-Down Voltage Regulator

 

For a safer and more controlled option, you can use a USB power source paired with a step-down voltage regulator. This device allows you to adjust the 5V from the USB down to 3V, matching the original power supply of the D batteries. Turn the voltage down to make sure that the booster runs smoothly without overloading the motor. Or turn it up and shoot those cars like missiles!

 

Supplies:

• 22 PCS Metal Alligator Clips

• Old USB cable to cut up

• HiLetgo 2pcs LM2596 Adjustable DC-DC Step Down Buck Power Convert Module 4.0-40V Input to 1.25-37V Output with LED Voltmeter Display

  OR

• BOJACK Low Voltage DC Motor Speed Controller PWM 1.8v 3v 5v 6v 12v 2A 30W Adjustable Driver Switch 1803BK 1803B

• Wire Cutter and Stripper

 

Key Considerations:

 

• Voltage: Ensure you provide around 3V to the booster. Too little won't spin the wheels fast enough, and too much could overheat your motor.

• Safety: Always test new setups for heat and performance to avoid damaging your booster or risking injury.

 

By using these alternative power methods, you can extend playtime while minimizing waste and saving on replacement batteries. Whether you prefer USB setups or rechargeable batteries, your Hot Wheels booster can keep racing with a bit of DIY ingenuity!