The Cigarette Lighter to OBD2 16-Pin Male Power Cable is a versatile power adapter that converts your vehicle’s standard 12V-24V cigarette lighter socket into a convenient OBD2 power source . This cable allows you to power OBD2 diagnostic tools, memory savers, GPS trackers, HUD displays, and other OBD2-powered devices directly from the vehicle's 12V power outlet .
One of the most common applications is as an ECU Memory Saver when replacing a vehicle battery. Modern vehicles store critical settings in the ECU—including fault codes, radio presets, clock settings, seat positions, and keyless entry systems. Disconnecting the battery can erase these settings, requiring time-consuming reprogramming. This cable provides alternative 12V power to the OBD2 port during battery replacement, preserving all memory settings .
Key Features
Cigarette Lighter to OBD2 Power Conversion
The cable features a standard 12V cigarette lighter plug on one end and a 16-pin OBD2 male connector on the other. This enables you to draw power from the vehicle's 12V/24V electrical system and supply it to OBD2 devices without using the vehicle's OBD diagnostic port . This is particularly useful when the OBD port is occupied by another device or when you want to keep the OBD port free for other uses.
OBD2 Memory Saver Function
When used as a memory saver, this cable provides backup power to the vehicle's ECU during battery replacement . By connecting the cigarette lighter to another vehicle's 12V power outlet or a portable jump starter, you maintain continuous power to the OBD2 port, preserving:
- Engine fault codes and readiness monitors
- Radio presets and infotainment settings
- Clock and date settings
- Seat and mirror memory positions
- Keyless entry and alarm system configurations
12V-24V Wide Voltage Compatibility
Designed for standard automotive electrical systems, this cable works reliably on 12V passenger vehicles and 24V light commercial vehicles . Always verify that your device's voltage requirements match the output to prevent damage .
Durable Construction
Manufactured with high-quality PVC insulation, copper conductors, and molded connectors with integrated strain relief . The materials are resistant to heat, corrosion, and common workshop chemicals. The plug features grip treads for easy insertion and removal .
Plug-and-Play Operation
No drivers, software, or installation required. Simply insert the cigarette lighter plug into the 12V power outlet of the donor vehicle and connect the OBD2 male connector to the OBD2 port of the vehicle requiring power.
Safety Note
This cable is designed for one-way power transmission—from the cigarette lighter source to the OBD2 device. It typically cannot be used in reverse to power devices from the OBD2 port . Some models feature built-in reverse polarity protection and overload protection .
Technical Specifications
Compatible Applications
- ECU Memory Saver – Preserve vehicle settings during battery replacement
- OBD2 Diagnostic Tools – Power code readers, scan tools, and ELM327 interfaces
- OBD2 Accessories – Power GPS trackers, HUD displays, telematics devices
- Development & Testing – Supply power to OBD2-based development tools
- Emergency Power – Provide backup power to ECU when the main battery is disconnected
Important Notes
- This cable provides one-way power transmission from the cigarette lighter to the OBD2 connector; the OBD2 end is male (plug) and is designed to receive power, not supply it .
- Confirm your OBD2 device's voltage requirements before use.
- To use as a memory saver, connect the cigarette lighter to a separate 12V power source (another vehicle's outlet or a jump starter), not the vehicle whose battery is being replaced .
- Ensure the ignition is off and all lights/accessories are switched off before connecting .
- Check that the cigarette lighter socket is active with the ignition off (some vehicles only power the socket when the ignition is on).
- This is a passive power cable – it does not convert communication protocols.
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