Integrated & Split Gasoline EV Range Extender | 48V/60V/72V-SADG-1/2

1. Integrated Range Extender-SADG-1
Optimized for compact installation, long-distance travel and unattended operation, the 4th-generation integrated range extender effectively solves electric vehicles’ common pain points of insufficient power, cumbersome installation and high fuel consumption. Its core practical advantages are summarized below:
- Integrated All-in-One Structure, Simplified Installation: The integrated engine and generator assembly eliminates complicated assembly and scattered wiring. It saves vehicle installation space, prevents loose connection faults during long-term driving, and is ideal for EVs with limited installation space and standardized modification needs.
- Full Voltage & Dual Battery Compatibility, Wide Application: It supports 48V/60V/72V universal vehicle voltage, 4KW/5KW optional power output, and is compatible with both lead-acid and lithium batteries. It precisely matches daily commuter vehicles and heavy-load electric vehicles, adapting to power demands of flat-road driving and climbing operations.
- Intelligent Automatic Fuel Control, Energy-Saving & Labor-Saving: The built-in automatic fuel control system dynamically adjusts fuel supply based on real-time battery power and power consumption. It avoids unnecessary fuel waste under high-load operation, eliminates frequent manual adjustment during long-distance travel, and realizes unattended efficient and fuel-saving operation.
- Upgraded Engine, Low Fuel Consumption & Stable Power: Equipped with a 170F rotor engine, it runs stably at 3600–4000 rpm. With 212ml displacement and an 8:5:1 compression ratio, it achieves ultra-low fuel consumption of ≤340g/kW·h. It maintains stable power output without attenuation during long-hour continuous and high-load operation, cutting daily operating costs significantly.
- Compact & Standardized Design, Export-Friendly: Weighing only 19.5kg with a 51×38×44cm package size, it balances structural stability and portability, bringing no extra vehicle load burden. The standardized packaging supports convenient transportation, individual replacement and dealer bulk export.
- All-in-One Integrated Structure, Easy & Neat Installation: Adopting an integrated design of engine and generator assembly, the unit requires no complicated assembly and scattered wiring. It saves vehicle installation space and avoids loose parts or wiring faults during long-term driving. Perfect for electric vehicles with limited reserved space and users pursuing tidy and standard modification.
- Full Voltage & Dual Battery Compatibility, Wide Matching Range: Compatible with 48V, 60V and 72V electric vehicle systems, and supports both lead-acid and lithium batteries. With optional 4KW and 5KW power output, it can precisely match small daily commuter vehicles and large load-carrying electric vehicles, meeting different power supply demands of flat road driving and climbing operation.
- Automatic Fuel Control, Intelligent & Fuel-Saving: Equipped with an intelligent automatic fuel adjustment system, it actively adjusts fuel supply according to real-time battery power and power consumption. It effectively avoids excessive fuel waste caused by continuous high-load operation and solves the trouble of frequent manual adjustment during long-distance travel, realizing unattended energy-saving operation.
- Upgraded Engine Performance, Lower Fuel Consumption & Stable Output: Built with a 170F rotor engine, running stably at 3600–4000 rpm. With 212ml displacement and 8:5:1 compression ratio, it keeps ultra-low fuel consumption at ≤340g/kW·h. Even during all-day continuous power generation and high-load operation, it maintains stable power output without power attenuation, greatly reducing daily usage costs.
- Moderate Weight & Standard Packaging, Convenient for Replacement & Export: Weighing 19.5kg with package size of 51×38×44cm, the unit balances structural stability and portability. It is not easy to cause vehicle load increase, and supports standardized transportation and batch export, suitable for individual replacement and dealer bulk stocking.

2. Split Range Extender SADG-2
Designed with lightweight split structure and dual control modes, the split range extender perfectly fits conventional EV modification, daily commuting and cost-effective bulk matching, solving the defects of heavy weight, single operation mode and difficult installation of traditional range extenders. Its core practical advantages are as follows:
- Lightweight Split Structure, Flexible Narrow-Space Installation: The separated design weighs merely 17kg, lighter and more flexible than integrated models. It supports scattered installation in vehicle narrow gaps, solving the installation difficulties of small electric vehicles and tricycles with limited bottom space.
- Multi-Voltage & Multi-Power Matching, High Compatibility: It covers mainstream 48V/60V/72V voltage and offers 3KW/5KW optional power, specially optimized for lead-acid battery electric vehicles. It fully meets the power demands of daily commuting, load carrying and medium-short distance travel with high market universality.
- Dual Manual & Automatic Control, Scenario-Adaptive: It supports switchable manual and automatic fuel control modes. Manual mode suits intermittent short-distance use for fuel saving, while automatic mode adapts to long-distance continuous driving, reducing frequent operation and fitting diverse driving habits and road conditions.
- Mature Engine, Stable & Low Failure Rate: Adopting a reliable 170F rotor engine with 3300rpm rated speed, 212ml displacement and 8:5:1 compression ratio, it stabilizes fuel consumption at ≤395g/kW·h. The mature and durable structure withstands frequent start-stop and cyclic daily use, lowering after-sales maintenance pressure.
- Compact Packaging & High Cost Performance, Ideal for Bulk Procurement: With a 39×39×40cm compact package size, it saves transportation space and reduces logistics costs. Featuring simple structure, easy installation and high cost performance, it is the preferred choice for modification factories, fleet supporting and foreign trade bulk orders.
- Lightweight Split Design, Flexible for Narrow Space Installation: Adopting a split separate structure, the overall weight is only 17kg, lighter and more flexible than integrated models. It can be installed in scattered narrow gaps of vehicles, solving the installation difficulty of small-size electric cars and electric tricycles with limited bottom space.
- Multi-Voltage & Multi-Power Options, Suitable for Lead-Acid Battery Vehicles: It covers full 48V/60V/72V mainstream voltage and provides 3KW and 5KW power selection. Optimized and adapted for lead-acid battery electric vehicles, it perfectly matches the power demand of daily commuting, load carrying and short-to-medium distance travel, with high market universality.
- Dual Manual & Automatic Control, Adapt to Diverse Usage Habits: Supporting both manual fuel control and automatic intelligent operation. Users can switch modes freely according to different scenarios: manual control for short-distance intermittent use to save fuel, and automatic mode for long-distance continuous driving to avoid frequent operation, adapting to different driving habits and road conditions.
- Mature Engine Operation, Stable & Reliable for Daily Use: Equipped with a stable 170F rotor engine, with rated speed of 3300 rpm, 212ml displacement and standard 8:5:1 compression ratio. The fuel consumption is stably controlled at ≤395g/kW·h. With mature and stable performance, it is not prone to failure during frequent start-stop and daily cyclic operation, lowering after-sales maintenance pressure.
- Compact Packaging & Low Cost, Ideal for Bulk Matching Projects: With a compact package size of 39×39×40cm, it occupies less transportation space and reduces logistics cost. Featuring simple structure, easy installation and high cost performance, it is the preferred choice for mass refitting factories, fleet supporting and foreign trade bulk procurement.

1. Full Voltage & Power Compatibility
Both integrated and split models support mainstream 48V, 60V and 72V vehicle voltage systems, covering most low-speed electric vehicles, electric tricycles and modified electric vehicles on the market. With optional 3KW, 4KW and 5KW power grades, it can be accurately matched according to vehicle load, battery capacity and daily mileage, avoiding power shortage or power waste.
2. Low Fuel Consumption & High Energy Efficiency
Optimized engine combustion structure greatly improves fuel utilization rate. The upgraded integrated version achieves lower fuel consumption, while the split version maintains stable economical performance. Intelligent fuel control automatically adjusts engine operating status according to battery power, effectively reducing idle fuel consumption and solving the problem of high energy consumption during long-distance driving and load climbing.
3. Stable Rotor Engine Power System
Adopting mature 170F built-in rotor engine, the unit features strong power reserve, anti-decay performance and stable continuous operation. It effectively copes with long-hour driving, climbing load and frequent start-stop working conditions. The standard 0.6L engine oil capacity ensures sufficient lubrication during long-term operation, reducing wear and extending engine service life.
4. Flexible Control & Strong Adaptability
The integrated version supports full automatic fuel control for unattended intelligent power generation. The split version provides dual manual/automatic modes for flexible switching. Compatible with both lithium and lead-acid batteries (integrated type) and lead-acid batteries (split type), it adapts to various vehicle modification standards and regional market demands, with extremely high universality.
5. Lightweight & Easy Installation
Compact body design and standardized packaging make both models lightweight and space-saving. The integrated structure is neat and highly integrated, while the split structure is flexible for scattered installation in narrow vehicle spaces. Light weight reduces vehicle load, and the simple assembly structure lowers installation and after-sales maintenance difficulty, suitable for individual refitting and large-scale batch supporting.

1.Electric Vehicle Daily Commuting: Effectively solve mileage anxiety and extend driving range for low-speed electric vehicles and electric tricycles.
2. Long-Distance & Load Driving: Provide continuous stable power supply during long-distance travel and climbing load operation to avoid sudden power failure.
3.Vehicle Modification & Upgrade: Perfect for electric vehicle refitting projects, supporting flexible power and configuration matching.
4. Commercial Fleet Matching: Stable performance, low failure rate and easy maintenance, ideal for bulk procurement and commercial vehicle supporting projects.