EP Global
EFL503-HV-6
High Capacity Electric Counterbalanced Forklift 5.0T
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Explore the EFL503-HV-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
Compact and Mighty
EFL403-553 HV offer more compact sizes while delivering enhanced performance over low-voltage forklift models. Their single front wheel design allows maneuverability in tighter spaces, making them ideal for industries like steel manufacturing, automotive, and heavy machinery production where space can be limited. With high-voltage Li-ion batteries, EFL403-553 can endure operating hours up to 6 hours. The 20-25% gradeability enables them to handle rough terrain and ramps with ease, making them suitable for outdoor applications with ease.
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Specs
Core specifications for the EFL503-HV-6.
| Name | Value |
|---|---|
| Operator type | Seated |
| Load capacity | 5000 kg |
| Load centre distance | 600 mm |
| Load distance, centre of drive axle to fork | 555 mm |
| Wheelbase | 2000 mm |
| Service weight | 7600 kg |
| Axle loading, laden front/rear | 11195/1405 kg |
| Axle loading, unladen front/rear | 3308/4292 kg |
| Tyre type | Pneumatic |
| Tyre size, front | 300-15-20PR |
| Tyre size, rear | 7.00-12-14PR |
| Wheels, number front/rear (x=drive wheels) | 2x/2 |
| Tread width, front | 1176 mm |
| Tread width, rear | 1190 mm |
| Tilt of mast/fork carriage forward/backward | 6/12 ° |
| Retracted mast height | 2400 mm |
| Overall height | 4361 |
| Free lift | 160 mm |
| Lift height | 3000 mm |
| Max lift height | 7000 mm |
| Height, mast extended | 4361/3996 mm |
| Height of overhead guard (cabin) | 2400 mm |
| Seat height/standing height | 1290 mm |
| Height of tiller handle in drive position min./max. | 1290 |
| Tow coupling height | 640 mm |
| Loading height, unladen | 2400 |
| Lowered height | 2400 |
| Overall length | 4370 mm |
| Length to face of forks | 3150 mm |
| Overall width | 1495 mm |
| Fork dimensions | 60×150×1220 mm |
| A,B Fork carriage class/type A, B | 4A |
| Fork carriage width | 1380（1424） mm |
| Distance between fork-arms | 1380 |
| Ground clearance, laden, below mast | 150 mm |
| Ground clearance, centre of wheelbase | 180 mm |
| Aisle width for pallets 1000×1200 crossways | 4705 Ast |
| Aisle width for pallets 800×1200 lengthways | 4705 Ast |
| Turning radius | 2730 Wa |
| Travel speed, laden/unladen | 24/25 km/h |
| Lifting speed, laden/unladen | 0.38/0.48 m/s |
| Lowering speed, laden/unladen | 0.41/0.42 m/s |
| Max. gradeability, laden/unladen | 23/25 % |
| Service brake | Hydraulic |
| Parking brake | Mechanical |
| Drive motor rating S2 60 min | 30 kW |
| Lift motor rating at S3 15% | 27.8 kW |
| Battery nominal capacity | 173 Ah |
| Battery voltage | 309 V |
| Battery type | Li-Ion |
| Battery weight | 473 kg |
| Type of drive control | PMSM |
| Steering design | Hydraulic |
About the EFL503-HV-6
The EFL403–553HV Series marks a breakthrough in heavy-duty electric forklift technology, bringing together EP’s high-voltage Li-ion system and advanced PMSM (Permanent Magnet Synchronous Motor) for unmatched efficiency and performance.
The high-voltage battery (309V/173Ah LFP) delivers up to 6 hours of continuous operation and supports 1C charging, achieving a full charge in just one hour. Its intelligent thermal management system integrates dual water cooling (for motor and battery) and oil cooling (for hydraulics), maintaining optimal component temperature and ensuring long-term reliability even under intense workloads.
Operators benefit from a spacious, ergonomic cabin with fingertip controls, adjustable suspension seating, and excellent visibility. Optional add-ons include radar and camera systems, air conditioning, LED lighting packages, and a full or half-cabin for harsh climates. With zero emissions, low maintenance, and up to 15% energy savings compared to traditional AC systems, the EFL403–553HV Series sets a new benchmark for sustainable heavy-duty material handling.
FAQs
Common questions people ask about the EFL503-HV-6.
What are the load capacities of the EFL403–553HV Series?
The series includes models with load capacities of 4.0, 5.0, and 5.5 tons, making it suitable for heavy-duty operations in logistics, manufacturing, and industrial environments that require high lifting power and endurance.
What type of battery powers the EFL403–553HV forklifts?
Each model is equipped with EP’s high-voltage LFP Li-ion battery (309V/173Ah) that delivers strong torque, long runtime, and supports rapid 1C charging — achieving a full charge in just one hour.
Can the EFL403–553HV operate in harsh or outdoor environments?
Yes. With an IPX4-rated chassis and IP67 protection for high-voltage components, along with dual water and oil cooling systems, the forklift ensures reliable performance even in wet, dusty, or high-temperature conditions.
What are the key advantages of the high-voltage Li-ion system?
The HV system provides 15% higher energy efficiency, smoother acceleration, and greater power output compared to traditional AC systems. It also reduces overall maintenance costs while offering zero emissions and consistent performance over time.
What options and ergonomic features are available for operators?
The EFL403–553HV Series includes fingertip controls, OPS safety system, LED lighting, and a comfortable suspension seat. Optional add-ons include radar or camera systems, telematics, air conditioning, and fully enclosed cabins for all-weather operation.