【Diesel heater 12v Power Supply】: 250W big power , much safer to have lots of power available than to try and push a low power unit beyond its ability.Capable of delivering up to 20 amps of DC power for running 12V car devices at home hotel or camping ,not limit using in car now 【Safe and Reliable Operation】: Built-in safety features including over-voltage protection, over-current protection, and short-circuit protection safeguard both your devices and your household electrical system during charging.Built-in a smart silent cooling fan. When the current reaches 30A or higher, the fan will rotate to dissipate heat. This will effectively guarantee continuous working in silence, avoid running overheat and greatly extend its service life. 【Wall plug to cigar socket ac dc adapter 】: Simple plug-and-play operation requires no complicated setup or installation, making it user-friendly for anyone to use right out of the box.Small size it is portable easy to carry and store; Built-in cooling fan avoids overheat, makes it reliable to continue working all the time. 【9.85‘ length cable 】With 9.85' length cable .it can be used in most sites. Whole body with both ac/dc cords ,never worry about disconectting 【Universal Compatibility 】Compatible with a wide range of 12V automotive devices, In Spring/Autumn ,you can take it out while camping ,you can use 12V electric cooker ,car fridge ,connect them with portable battery power ,take a pinice with your families and friends In Summer /Winter you can use it for 12V car fans ,diesel heater etc 【12V car device using Convenience】: Transform your household outlets into a convenient power supply for 12V automotive accessories, allowing you to power up your car gadgets right at home.Heavy-duty 360W rated power and 400W max power are available to power almost all of the common vehicle electronics, such as Electric car jack air compressor, car tire inflator, car diffuser, car oxygen bar, automotive radio ,car TV, car cleaner, automotive razor and vehicle power amplifier etc This AC to DC converter is a powerful 20 amp unit designed for running 12V car devices It converts standard AC power from a wall outlet to a regulated 12V DC output, making it ideal for safely and efficiently charging a wide range of12V car devicers. With a built-in LED light for easy visibility, this converter features robust construction and overload protection to ensure reliable performance. Perfect for automotive, marine, or off-grid applications, it delivers the steady DC power needed to keep your lithium-ion batteries topped up and ready for use. Compact and lightweight (approximately 1.5 lbs or 0.68 kg), it's also highly portable for charging on the go. Whether you're maintaining batteries for power tools, electric vehicles, or backup systems, this 20 amp AC to DC converter is an essential accessory.