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Voltage Inverter -12V to 12V DC (5 Amp & 10 Amp Models)

If you have a classic or vintage vehicle running a positive ground chassis system and need to run modern equipment requiring a normal negative ground chassis, then you will need one of these. Operate modern 12 Volt negative ground accessories from positive ground 12 Volt electrical systems smoothly and safely.

These power inverters are compact, lightweight, quiet, and extremely efficient. Because the unit uses a common ground architecture, external ground isolation is unnecessary. Built with high-efficiency switch-mode components, power conversion efficiency exceeds 95%, ensuring current draw remains negligible when no output load is active.

Current draw is negligible when no load is applied, making them ideal for memory maintenance, clocks, or alarm systems that must be left on for long periods of time without discharging the vehicle battery. Housed in a robust enclosure, this inverter provides long-term stability and reliable operation in demanding environments.

Which Version Do You Need? (5A vs 10A Guidance)

Selecting the right inverter depends on the total continuous current draw (amperage) or power consumption (wattage) of the 12V accessories you plan to run:

5A Version (Up to 60W Continuous / 120W Max): Ideal for low-power accessories such as basic digital or vintage-look car radios without large external amplifiers, UHF / CB radios, dash cams, GPS navigation only units, small LED instruments, clocks, and memory maintenance lines.
10A Version (Up to 120W Continuous / 288W Max): Recommended for standard or modern high-power car stereos (especially units with built-in 4-channel high-power amplifiers), multi-speaker audio setups, larger LED lighting arrays, auxiliary power sockets, and electronic accessories with higher startup current demands.

Tip: For standard car stereo installations, the 10A version is generally recommended. Head units often draw higher peak current during high-volume transients or bass hits, and having the additional overhead prevents potential audio distortion or thermal shutdown.

Key Features & Specifications:

Input Voltage Range: -9V to -18V DC (nominal positive ground input)
Output Voltage: 12V DC nominal
Output Current (5A Model): 5A continuous / 6A max (120W max power)
Output Current (10A Model): 10A continuous / 12A max (288W max power)
Conversion Efficiency: Greater than 95%
Output Ripple: ≤40mV
Operating Temperature Range: -40°C to +85°C (industrial grade)
Dimensions: 74 x 74 x 30 mm (approx., excluding cables / net weight 0.3 kg)
Integrated Protection: Input transient high-voltage protection, output over-current protection, and internal thermal / overheating shutdown

Common Applications (Vehicles & Electronics):

Classic and vintage car stereo systems, head units, and hidden amplifiers
UHF and CB radios, Bluetooth receivers, and communication equipment
Dash cams, GPS navigation, tracking units, and vehicle security alarms
Automotive LED lighting, auxiliary spotlights, and display screens
Memory maintenance, monitoring systems, solar setups, hobbyist projects, and general industrial DC equipment

Wiring Lead Connections:

Input (Positive Ground Supply): Chassis / Positive Supply - Red wire; Battery Negative / Minus - Black wire
Output (12V Equipment): Positive - Yellow wire; Negative / Ground - Black wire

Note: Please ensure the voltages are measured to be correct before connecting to the device that is to be supplied the power. It is strongly recommended to install appropriate inline fuses on both the input and output positive lines to protect the module and connected accessories against external circuit faults. Fuses are not supplied. The output is limited to the rated current, so a motor may not start if its start-up current is higher. Professional installation is recommended. An instruction manual is included with the product.