EP Global
EFL503-HVD-6
High Capacity Electric Counterbalanced Forklift 5.0T
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Explore the EFL503-HVD-6
This groundbreaking development adopts world-leading high-voltage Lithium-ion power combined with advanced PMSM (Permanent Magnet Synchronous Motor) technology. These high-capacity forklifts ensure triple guarantees of high performance, long running time and safety while aligning with the current trend of green and sustainable development.
High-voltage Li-ion batteries enable more power delivery to motors, improving acceleration and travel speeds for high-capacity trucks. PMSMs complement this with rapid response times, swiftly reaching required speeds and torques. This combination of PMSM and high voltage can provide stable and strong power output, which further gives high-capacity trucks excellent climbing capabilities ensuring that the forklift can cope with various applications with ease.
The high-voltage model offers a 1.5-2 times performance improvement over the low-voltage model. Taking the 10-ton model as an example:
100% improvement in travel speed for high voltage models in laden and unladen conditions.
The high-voltage model demonstrates a 45% faster lifting speed.
100% improvement in gradeability when unladen, 45% improvement when laden for high voltage models.
High Performance: High speed and high gradeability
High-voltage Li-ion batteries have high energy density and can store more electrical energy within a compact volume. High-voltage systems consume less energy and provide longer battery running time comparing low-voltage systems. Notably, these high-voltage Li-ion batteries boast an impressive cycle life of up to 4000 cycles, ensuring long-term durability and minimizing the need for battery replacements.
The PMSMs incorporate advanced control technology to optimize motor efficiency. Unlike traditional AC motors, PMSMs have higher energy conversion efficiency and reduce energy waste. This means that high-capacity trucks can work continuously for prolonged hours at lower costs.
Equipped with fast charging capabilities, high-capacity trucks offer a remarkable charging experience. The high-voltage models are compatible with vehicle-grade charging stations and support 1C charging rating, allowing them to be fully charged in as fast as 1-1.2 hours. This minimizes downtime and maximizes productivity, making it ideal for multi-shift operations
Lithium batteries present considerably lower charging costs than fuel expenses. The integration of high-voltage and PMSM technology achieves up to 15% greater electricity savings versus traditional lithium and AC technology configurations. This significantly reduces long-term energy consumption costs.
Energy Efficiency: extended runtime and fast charging
Both high-voltage lithium batteries and PMSM employ multiple protective measures to ensure safe operations including overcharge protection, over-temperature monitoring, short-circuit protection, etc. minimizing the risk of potential hazards and maximizing operational safety.
The central controlling module- VCU (Vehicle Control Unit) extends the safety of the high-voltage forklifts. VCU provides precise control and real-time monitoring of critical parameters to ensure the truck operates within safe limits.
It also features turn speed control, which adjusts the forklift's speed based on the turning angle, ensuring stability during turns. An over-speed alarm alerts the operator if the forklift exceeds the safe speed limit.*
The high-capacity forklift mast is equipped with a hydraulic buffering system that ensures smooth lifting and lowering of loads. With controlled deceleration, the fork movement is smooth with no abrupt stops that could damage the load or cause operator discomfort. This feature enhances operational safety and prolongs the lifespan of the mast components.
Safety Assured: Battery, motor protection, monitoring and mast buffering
Operating at a higher voltage allows the battery to be designed with fewer individual cells. With fewer components and a simpler design, the risk of battery failure is lowered.
Thanks to advanced BMS (Battery Management System) which helps to regulate and monitor high-voltage battery, these batteries tend to have a longer life than low-voltage lithium batteries, reducing the need of battery replacement.
The brushless, simple rotor design of PMSM eliminates mechanical wear from brushes and commutators. This durable, low-friction construction requires minimal periodic maintenance, reducing associated labor costs and downtime.
Low maintenance: Longer battery life span
Experience uninterrupted productivity through rain, puddles, and damp conditions with the overall IPX4 rating. Plus an exceptional IP67 rating for high-voltage components. Engineered to withstand harsh temperature, high-capacity trucks offer an ambient temperature range of -20℃~40℃ allowing them to perform no matter climate.
Battery heating when charging comes as a standard function for high capacity models, which is activated when the surrounding temperature is below zero to always offer an optimal temperature range for efficient and safe charging even in cold weather conditions.
The dual front wheels is a standard configuration on several models offering a wider base of support, which greatly improves the forklift's stability. Considering the capacity loads of the high-capacity trucks, the weight of the load is more evenly distributed across a larger surface area. The increased ground contact area provided by the dual wheels enhances traction. This is particularly beneficial in environments where the floor may be slippery or uneven while operating outdoors, ensuring that the forklift can maintain a firm grip and operate safely. This not only helps in maintaining balance but also minimizes the stress on individual tires, extending the lifespan of the tires.
Strong adaptability adaptable to harsh outdoor weather conditions
Application
The EFL503–703HV Series is purpose-built for industries that demand strength, reliability, and safety in extreme working conditions — such as steel production, construction materials, ports, and heavy logistics. Its dual-wheel front axle enhances traction and balance when transporting bulky materials on uneven or slippery ground. With its fast 1C charging capability and long battery life (up to 4000 cycles), it is the ideal solution for multi-shift operations that require continuous power and minimal downtime.
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Specs
Core specifications for the EFL503-HVD-6.
| Name | Value |
|---|---|
| Operator type | Seated |
| Load centre distance | 600 mm |
| Load distance, centre of drive axle to fork | 603.5 mm |
| Wheelbase | 2300 mm |
| Service weight | 8550 kg |
| Axle loading, laden front/rear | 12260/1290 kg |
| Axle loading, unladen front/rear | 4650/3900 kg |
| Tyre type | Pneumatic |
| Tyre size, front | 8.25-15-14PR |
| Tyre size, rear | 8.25-15-14PR |
| Wheels, number front/rear (x=drive wheels) | 4x/2 |
| Tread width, front | 1498 mm |
| Tread width, rear | 1718 mm |
| Tilt of mast/fork carriage forward/backward | 6/12 ° |
| Retracted mast height | 2480 mm |
| Overall height | 4470 |
| Free lift | 160 mm |
| Max lift height | 7000 mm |
| Height, mast extended | 4470/3965 mm |
| Initial lift | 160mm |
| Height of overhead guard (cabin) | 2590 mm |
| Seat height/standing height | 1490 mm |
| Tow coupling height | 600 mm |
| Lowered height | 2480 |
| Length of loading surface | 3500 |
| Overhang | 160 |
| Overall length | 4720 mm |
| Length to face of forks | 3500 mm |
| Overall width | 2028 mm |
| Fork dimensions | 60×150×1220 mm |
| A,B Fork carriage class/type A, B | 4A |
| Fork carriage width | 1845（1995） mm |
| Distance between wheel arms/loading surfaces | 600 |
| Ground clearance, laden, below mast | 160 mm |
| Ground clearance, centre of wheelbase | 265 mm |
| Aisle width for pallets 1000×1200 crossways | 5260 Ast |
| Aisle width for pallets 800×1200 lengthways | 5260 Ast |
| Turning radius | 3235 Wa |
| Internal turning radius | 3235 |
| Travel speed, laden/unladen | 25/26 km/h |
| Lifting speed, laden/unladen | 0.51/0.53 m/s |
| Lowering speed, laden/unladen | 0.48/0.42 m/s |
| Max. gradeability, laden/unladen | 30/34 % |
| Service brake | Hydraulic |
| Parking brake | Mechanical |
| Drive motor rating S2 60 min | 60 kW |
| Lift motor rating at S3 15% | 2x27.8 kW |
| Battery nominal capacity | 228 Ah |
| Battery voltage | 309 V |
| Battery type | Li-Ion |
| Battery weight | 693 kg |
| Charger output current | / |
| Type of drive control | PMSM |
| Steering design | Hydraulic |
| Sound pressure level at the drivers ear | / dB(A) |
About the EFL503-HVD-6
The EFL503–703HV Series embodies EP’s innovation in sustainable heavy lifting. Powered by a 309 V high-voltage LFP battery, it provides up to 15% energy savings compared with traditional AC systems, while maintaining strong torque and rapid acceleration. Its high-voltage PMSM drive (60 kW + 2× 27.8 kW lift motors) ensures consistent performance and smoother control across long operating cycles.
A triple cooling system — dual water cooling (for battery and motor) and oil cooling (for hydraulics) — keeps all systems within optimal temperature range, ensuring reliability even under –20 °C to +40 °C conditions. Advanced VCU control enables precise speed and turning management, mast buffering, and comprehensive safety monitoring.
Operators enjoy maximum comfort and safety with an ergonomic cabin, OPS safety system, fingertip control option, LED lighting, suspension seat, and optional A/C cabins. With zero emissions, low noise, and rugged build quality, the EFL503–703HV Series is a robust and eco-efficient choice for modern heavy-duty logistics.
FAQs
Common questions people ask about the EFL503-HVD-6.
What is the load capacity range of the EFL503–703HV Series?
The EFL503–703HV Series covers models from 5.0 tons up to 7.0 tons, making it suitable for handling heavy-duty materials such as metal coils, construction components, and industrial equipment in demanding operations.
What type of battery system powers the EFL503–703HV forklifts?
These models are powered by EP’s 309 V/228 Ah high-voltage LFP Li-ion battery, providing consistent high torque and long endurance. The system supports 1C rapid charging, allowing a full charge in approximately one hour for maximum uptime.
Can the EFL503–703HV operate in outdoor or harsh conditions?
Yes. The truck’s IPX4-rated chassis and IP67-protected electrical system ensure safe operation in wet, dusty, or extreme environments. Its dual water and oil cooling systems maintain stable performance across temperatures ranging from –20 °C to +40 °C.
How does the EFL503–703HV improve stability and traction during heavy loads?
The dual front-wheel structure distributes weight evenly, improving traction and balance when lifting or transporting heavy materials. Combined with a wide chassis and high ground clearance, it guarantees stability even on ramps or uneven surfaces.
What operator comfort and safety features are available?
The EFL503–703HV includes an ergonomic cabin with OPS safety system, suspension seat, and LED lighting. Optional upgrades include fingertip control, rear camera, radar systems, and an air-conditioned full cabin for superior comfort and safety.