Instructables
Picture of Supercharged Remote Control Battery Hack
2011-09-10 13.04.48.jpg
This instructables shows how to convert your remote control car to use one rechargable and long lasting battery. This less expensive retail store bought model uses 6 AA batteries that require constant replacement. This instructable can be applied to any remote control car the only variation being the voltage, addressed in another step.
 
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Step 1: Disassemble

Disassemble vehicle and expose control board or internal battery terminals.  The main internal battery terminals are below the circuit board on the back of the battery holder.

Step 3: Reassemble and Choose Battery

Reassemble body and drill hole for battery wires.  Solder battery connector that matches the connection type of the new battery.

Rechargeable batteries vary in voltage, current, type and size.

This particular RC truck used 6 AA batteries which means that they control board has voltage regulation and circuitry engineered for 9V.  The servo and motors are also designed for 9V.  AA batteries are 1.5V.  1.5V x 6 = 9V.  A 8V NiMH was chosen for this application.

Step 4: Attach Body

Picture of Attach Body
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Secure the battery and reattach the body.
DualPhase (author) 1 year ago
This "off the shelf" walmart car isn't really designed to receive upgraded components. That being said it is not possible on this car since it has an integrated speed controller and receiver on one PCB board. There is probably a way if you purchased an ESC (Electronic Speed Controller) and bypassed the circuit board completely. This would be an extensive hack and not worth it since you would have most of the components anyway and could buy a normal RC chassis.
abhimanroy1 year ago
Hi Bro,

I have ordered a 2,4 Ghz RX/TX for the same car to increase the range of control. Could you please be kind enough to guide me to replace the receiver with the 27Mhz stock one?

Thanks: Abhiman.
makya2 years ago
another part to remember is the rechargeable packs are 1.2 volts each battery vs. alkaline which are 1.5 volts each. so 6 AA alkalines are 9.0 volts, and 8 NiCd or NiMh rechargeables are 9.6 volts.

we use the 9.6 volt packs wired in parallel with the AA's in the battery tray and get about a 45 minute run time with the rock crawler like the one pictured.
Is that the rock crawler truck available at wal-mart? I forget the brand. Maybe nikko?
yehh the brand is maisto
RCdriver2 years ago
I basically did this same thing on the same type of RC, a maisto rock crawler. However, I used a rechargeable 9.6v nicd battery to power mine. that thing could powerhouse over almost anything i threw at it. Highly recommend doing this mod for the maisto rock crawler. (Or most other toy grade rc cars that take AA's)
hi97922 years ago
your rechargable battery must be the same voltage as the combined battery power otherwise your control board or your motor which was not designed to handle the much voltage will burn out although a hot fix if you want to be a friend i don't recomend it otherwise you could add a boost mode
DualPhase (author)  hi97922 years ago
This is kind of what I was thinking. This particular RC truck used 6 AA batteries which means that they control board has voltage regulation and circuitry engineered for 9V. The servo and motors are also designed for 9V. AA batteries are 1.5V. 1.5V x 6 = 9V. A 8V NiMH was chosen for this application.