1. Project Background

The customer requires a portable power system for professional applications such as construction sites, emergency services, firefighting, military field operations, and event power supply. The system must deliver high continuous AC output, support demanding short-duration loads, operate reliably in harsh environments, and provide verifiable performance data, especially for peak power duration and overload capability.

Based on the available product specifications, the EP3600 / BP3600 portable power station platform is the most relevant solution for this requirement. It is built around a high-capacity LiFePO₄ battery system, a 3.6 kW pure sine wave inverter, fast AC charging, rugged battery protection, and multiple AC/DC output options for professional field use.

Proposed Solution: EP3600 / BP3600 Professional Portable Power Station

2. Recommended System Configuration

For this application, we recommend the following configuration:

Core Power Unit

EP3600iL Portable Power Station
or
BP3600 Portable Power Station

Both models provide:

• Battery capacity: 3,430 Wh LiFePO₄ battery
• Continuous AC output: 3,600 W / VA
• Peak AC output: 7,200 W / VA
• Output waveform: Pure sine wave, THD < 3%
• Output voltage: 220 / 230 / 240 V AC available
• Frequency: 50 / 60 Hz available
• Fast AC charging: up to 3,000 W, fully charged in approximately 1.2 hours on 220–240 V AC
• Discharge operating temperature: −20°C to +50°C
• Battery pack protection grade: IP66
• Professional monitoring: LCD panel and APP monitoring
• Battery chemistry: LiFePO₄ for long cycle life and safety

For applications requiring extended runtime, the EP3600iL can be expanded with EP3600B extra battery packs, with system capacity expandable up to 109 kWh according to the product documentation.

3. Requirement-by-Requirement Compliance Review

4. Key Technical Advantages

4.1 High-Capacity LiFePO₄ Battery System

The EP3600 / BP3600 platform uses a 3,430 Wh LiFePO₄ battery, which exceeds the customer’s minimum requirement of 2,100 Wh.

Compared with smaller portable power stations, this capacity provides longer runtime for professional tools, emergency devices, lighting systems, communication equipment, medical support equipment, and mobile workstations.

LiFePO₄ chemistry also offers key advantages for professional users:

• Higher thermal stability
• Longer cycle life
• Better safety profile than conventional lithium-ion systems
• Suitable for repeated field deployment
• Stable output under heavy load conditions

According to the available specification, the EP3600 battery supports 3,000 cycles to 80%+ capacity, while the BP3600 specification states 5,000 cycles to 80%+ capacity.

4.2 3.6 kW Continuous Pure Sine Wave AC Output

The system provides 3,600 W / VA continuous AC output, meeting the customer’s minimum continuous power requirement.

The output is:

• Pure sine wave
• THD < 3%
• Available in 220 / 230 / 240 V AC
• Available in 50 / 60 Hz

This makes the system suitable for powering sensitive electronics and professional equipment, including:

• Power tools
• Lighting towers
• Communication devices
• Measuring instruments
• Control systems
• Emergency support equipment
• Event AV equipment
• Small pumps and compressors within rated load limits

The pure sine wave output is particularly important for professional use because many tools and electronic control systems are sensitive to unstable or modified sine wave power.

4.3 Fast Charging for Operational Readiness

The EP3600 / BP3600 supports high-power AC charging from a wall outlet or AC generator.

At 220–240 V AC, the charging input reaches up to 3,000 W, allowing the unit to be fully charged in approximately 1.2 hours.

This significantly exceeds the customer’s requirement of a maximum 3-hour charging time and is highly valuable for field teams that need quick redeployment between operations.

Charging options include:

• AC wall outlet
• AC generator
• Solar input with MPPT
• Vehicle / driving charging options, depending on configuration
• DC charging options, depending on configuration
• Wind charging option for EP3600, depending on configuration

For emergency services, disaster relief, firefighting command posts, construction teams, and event operators, fast charging reduces downtime and improves fleet availability.

4.4 Rugged Field-Oriented Design

The EP3600 product introduction describes the unit as suitable for:

• Fieldwork
• Outdoor work
• Disaster relief
• Portable professional energy supply
• Off-grid energy use
• EV emergency charging
• Harsh operating environments

The EP3600 also includes patented thermal management and protection technologies, while the BP3600 provides a more compact vertical structure with optional wheels and telescopic handle.

For mobility, the EP3600 uses a patented four-wheel chassis and large-diameter rollers, allowing movement across different terrains. The BP3600 can also be configured with wheels and a telescopic handle.

This makes the platform suitable for professional users who need mobile power in demanding environments.

5. Application Scenarios

5.1 Construction Sites

The EP3600 / BP3600 can supply portable AC power for:

• Electric drills
• Cutting tools
• Work lights
• Measuring instruments
• Battery chargers
• Small pumps
• Temporary site offices
• Communication equipment

The 3.6 kW continuous output allows the system to support many common site tools, while the 7.2 kW peak output helps with short startup loads within the product’s rated surge capability.

For tools with very high inrush current, the load profile should be tested before deployment.

5.2 Emergency Services and Disaster Relief

For rescue teams and emergency services, the solution can support:

• Communication systems
• Portable lighting
• Command station electronics
• Medical support equipment
• Drone charging
• Laptops and radios
• Temporary shelters
• Field monitoring devices

The fast 1.2-hour AC charging time is valuable for emergency rotation cycles, and the LiFePO₄ battery chemistry improves safety during repeated field operation.

5.3 Firefighting Support

In firefighting and rescue operations, the system can be used for:

• Mobile lighting
• Communication repeaters
• Command post equipment
• Fans and auxiliary devices within rated power
• Thermal imaging and battery charging equipment
• Portable electronics and support systems

Because firefighting environments may involve heat, water, dust, and impact risk, the final deployment should include additional enclosure protection or a rugged transport case if a minimum unit-level IP54 / IP65 rating is mandatory.

5.4 Military and Tactical Field Use

For military and tactical field operations, the power station can support:

• Communications
• Mobile computing
• Surveillance systems
• Sensor equipment
• Field charging stations
• Lighting
• Portable maintenance tools

The EP3600 platform’s expandable capacity is useful for longer deployments, while the BP3600’s compact structure may be preferred where mobility and transport volume are critical.

However, if the customer requires a strict maximum system weight of 20 kg, the current EP3600 / BP3600 hardware exceeds that limit and would require a different mechanical platform or customized lower-capacity model.

5.5 Event Applications

For event and temporary installation use, the system can power:

• LED lighting
• Audio support devices
• Ticketing / POS systems
• Network equipment
• Control consoles
• Cameras and broadcasting equipment
• Backup power for critical devices

The pure sine wave output and fast charging are especially suitable for event operators who need clean power without generator noise or exhaust emissions.

6. Important Gap Analysis Against Customer Requirements

While the EP3600 / BP3600 is a strong match for many core requirements, there are several important gaps that should be communicated transparently.

6.1 Peak Power Requirement

The customer requires:

Peak output power: minimum 18,000 W for short-duration loads

The available EP3600 / BP3600 specification states:

Peak power: 7,200 W / VA

Therefore, the standard EP3600 / BP3600 configuration does not meet the 18,000 W peak output requirement.

If the customer’s 18,000 W peak requirement is mandatory, we recommend one of the following approaches:

1. Clarify the exact peak duration and load type
   For example: milliseconds, seconds, motor-starting surge, compressor startup, pump startup, or resistive overload.

2. Conduct application-specific load testing
   Some field loads may list very high theoretical starting current, but actual measured startup duration may be short enough to manage with lower surge capacity depending on inverter design and protection logic.

3. Evaluate a higher-power customized platform
   If 18,000 W surge is a strict pass/fail requirement, a larger inverter architecture or parallel high-power system would be required.

4. Use staged-start or soft-start accessories
   For motor loads, soft starters or VFD-based startup control may reduce peak surge demand.

6.2 Weight Requirement

The customer requires:

Total weight including battery and housing: maximum 20 kg

The available specifications state:

• EP3600iL: 45 kg
• BP3600: 42 kg without wheels / telescopic handle
• BP3600: 45 kg with wheels / telescopic handle

Therefore, the EP3600 / BP3600 platform does not meet the maximum 20 kg weight requirement.

This should be treated as a critical mechanical mismatch.

If 20 kg is mandatory, then a smaller-capacity or redesigned platform is needed. However, it is technically challenging to combine:

• 2,100 Wh minimum battery capacity
• 3,600 W continuous output
• Rugged housing
• Professional protection
• IP54 / IP65 protection
• Maximum 20 kg total system weight

A trade-off discussion is recommended. The customer may need to prioritize between weight, runtime, inverter power, and ruggedization.

6.3 Protection Rating

The customer requires:

Minimum IP54, preferably IP65

Available specifications show:

• EP3600 unit: IP43
• EP3600 battery pack: IP66
• BP3600 unit: IP53
• BP3600 battery pack: IP66

Therefore:

• The battery pack protection level is strong, reaching IP66.
• The main unit protection level does not fully meet IP54 / IP65 in the available specification.
• BP3600 at IP53 is close to IP54, but still below the stated minimum.
• EP3600 at IP43 is below the stated minimum.

For professional applications where IP54 or IP65 is mandatory, the recommended solution is:

1. Confirm whether the requirement applies to the full system or battery module only.
2. Offer a ruggedized housing or protective transport enclosure.
3. Evaluate a customized IP54 / IP65 enclosure design.
4. Provide dust and water ingress test reports once available.

6.4 Operating Temperature

The customer prefers:

−20°C to +60°C discharge operating temperature

Available specifications state:

Discharging temperature: −20°C to +50°C

The product meets the low-temperature requirement but does not fully reach the preferred +60°C upper limit.

For high-temperature use, we recommend:

• Confirming the actual ambient temperature profile
• Testing the product under the customer’s expected duty cycle
• Defining derating behavior at high ambient temperature
• Providing thermal protection and output derating data

6.5 Low-Noise / Fanless Requirement

The customer prefers:

Low-noise operation, preferably fanless

The available documents do not provide a verified acoustic noise level or fanless confirmation.

Therefore, this point requires additional confirmation from engineering testing.

Recommended evidence:

• Acoustic noise test in dB(A)
• Test distance and load condition
• Noise level at 25%, 50%, 75%, and 100% load
• Confirmation of fan operation logic
• Thermal derating curve if silent or low-noise mode is supported

7. Electrical Protection and Professional Safety Functions

The EP3600 / BP3600 platform is designed for professional power supply applications and includes a LiFePO₄ battery system, pure sine wave inverter, thermal management, and protective battery architecture.

For professional use, the final customer submission should include documented protection functions such as:

• Overload protection
• Short-circuit protection
• Over-temperature protection
• Over-voltage protection
• Under-voltage protection
• Over-current protection
• Battery management system protection
• Charging protection
• Discharging protection
• Inverter fault protection
• Thermal shutdown or derating logic

The provided documents mention patented protection technologies and professional power system capability, but they do not include a complete protection-function test report. Therefore, a formal test package should be prepared before final technical approval.

8. Required Test Evidence Package

Because the customer specifically requires verifiable test results, especially for peak power duration and overload capability, we recommend preparing a dedicated technical validation package.

8.1 Peak Power and Overload Test Report

This report should include:

• Rated continuous output test at 3,600 W
• Peak output test at 7,200 W
• Peak duration test under defined load conditions
• Overload curve, for example:
  • 110% load duration
  • 125% load duration
  • 150% load duration
  • 200% surge duration
• Test voltage and frequency
• Ambient temperature
• Battery SOC at test start
• Load type: resistive, inductive, motor, compressor, mixed load
• Shutdown behavior
• Recovery behavior after overload protection
• Waveform quality during overload
• THD measurement under load

This is especially important because the customer asks for detailed information regarding peak power duration and overload capability.

8.2 Environmental and Ruggedness Test Evidence

For construction, emergency, firefighting, military, and event applications, the following tests are recommended:

• IP protection test report
• Drop / vibration test, if available
• High-temperature discharge test
• Low-temperature discharge test
• Dust exposure test
• Water spray test
• Thermal cycling test
• Connector durability test
• Transport vibration test

8.3 Charging Performance Test

The product claims fast AC charging. The test report should include:

• AC charging from 220–240 V input
• Maximum charging power
• Full charging time
• 0–80% charging time
• Charging temperature conditions
• Thermal behavior during fast charging
• Charging power curve

The available specification supports 3,000 W AC input and approximately 1.2-hour full charging time, which is a strong advantage for the customer’s maximum 3-hour charging requirement.

9. Recommended Customer Response Positioning

The recommended positioning should be clear and professional:

The EP3600 / BP3600 is suitable as a high-capacity, high-output professional portable power station for field operations where runtime, fast charging, pure sine wave output, LiFePO₄ safety, and rugged mobile deployment are priorities.

However, based on the currently available standard specification, the system should be positioned as:

• A strong match for battery capacity
• A strong match for 3.6 kW continuous AC output
• A strong match for 230 V / 50 Hz pure sine wave output
• A strong match for fast charging under 3 hours
• A strong match for low-temperature discharge down to −20°C
• A partial match for IP rating
• A partial match for upper temperature range
• A mismatch for 20 kg maximum weight
• A mismatch for 18,000 W peak output

This honest technical positioning improves credibility and helps guide the customer toward either a standard product proposal or a customized development discussion.

Final Solution Statement

Based on the customer’s requirements, we recommend the EP3600 / BP3600 portable power station platform as a professional mobile energy solution for construction sites, emergency response, firefighting support, military field use, and event applications.

The system provides a 3,430 Wh LiFePO₄ battery, 3,600 W continuous pure sine wave AC output, 230 V / 50 Hz compatibility, and fast AC charging in approximately 1.2 hours, meeting several of the customer’s key performance requirements. Its rugged mobile design, professional monitoring interface, expandable battery architecture, and field-oriented application profile make it suitable for demanding professional power scenarios.

At the same time, several customer requirements require further technical discussion. The standard product peak output is 7,200 W / VA, which is below the requested 18,000 W peak output. The total system weight is also above the requested 20 kg maximum, and the main unit protection rating is below the requested IP54 / IP65 level, although the battery pack itself reaches IP66.

Therefore, we recommend presenting the EP3600 / BP3600 as a strong standard platform for professional field power supply, while clearly proposing an engineering review or customized solution for the customer’s strict peak power, weight, and IP-rating requirements. A dedicated test package should be prepared to verify continuous output, peak power duration, overload capability, thermal behavior, charging performance, ingress protection, and professional electrical protection functions.