Portable battery solutions up to 5 kWh for the construction site | Professional LiFePO4 battery pack

Introduction

Construction sites present a challenging environment for contractors and construction companies. Gasoline and diesel generators have long been the standard for mobile power supply, but they present several problems: high noise levels, emissions of CO₂ and NOx, regular maintenance and ongoing fuel costs. In addition, there is increasing pressure to operate more sustainably and quietly, especially in urban renovation projects or indoor spaces where emissions are strictly regulated.

Portable battery packs of up to approximately 5 kWh offer a professional alternative that is both quiet and emission-free. These mobile energy storage solutions fit perfectly with Fimatec's vision: customer-oriented advice, customized solutions, quality over price, fast availability from ample stock and support from an in-house service team.

In this article, we focus on Renopower's models - BWC2500, BW3600 and BW5000 - and discuss their technical specifications, practical applications and a comparison with traditional gasoline and diesel generators. You'll gain insight into how these portable LiFePO4 battery packs can transform energy supply on the construction site.

Technical basis of portable battery packs

What is a battery pack or portable power station?

A battery pack or portable power station is a compact energy storage unit that stores electrical energy in batteries and converts it to usable voltage via built-in inverters. These units offer both AC (230 V) and DC outputs and range from small portable models to powerful units with multiple kWh capacity.

For contractors and construction companies, this means that machines such as drills, grinders, welding generators or charging hand-held power tools can be powered directly without relying on a diesel generator. The main difference from a traditional generator is that a battery pack operates quietly, produces no emissions and is virtually maintenance-free. These features make battery packs ideal for urban site projects, indoor spaces and renovation work where noise and emissions are a challenge.

Why LiFePO4 technology?

Lithium iron phosphate (LiFePO4) is the battery technology of choice for portable construction site solutions. While some contractors still think lithium batteries are risky, LiFePO4 stands out for its stability and durability.

- Safety: Low fire and explosion risk compared to traditional lithium-ion cells.
- Lifespan and cycles: 2,000+ charge cycles, which easily means a decade of operation under normal use.
- High energy efficiency and density: Lots of power in a compact and portable size.
- Low maintenance: No oil, filters or motor parts like diesel generators.

For the construction site, this translates into higher reliability, lower operating costs and a quiet, emission-free work environment. In addition, LiFePO4 batteries are more environmentally friendly thanks to their recyclable components and long service life.

Important technical specifications for construction application

When choosing a portable battery pack, several parameters are decisive for professional use:

-Continuous power (kW): determines how much power the battery can constantly deliver.
- Storage capacity (kWh): indicates how much energy can be stored and made available.
- Weight and transportability: essential for mobile applications on construction sites.
- IP class: protection against dust and water.
- Outputs and connections: 230 V AC, industrial plugs, USB, DC.

Examples from the Renopower series:
- BWC2500: 2.5 kWh capacity, suitable for lighter and compact construction site solutions.
- BW3600: 3,072 Wh capacity, 3.6 kW continuous power, IP65 water and dust resistant.
- BW5000: 5.04 kWh capacity, 5 kW continuous power, designed for heavier applications.

These specifications allow contractors to select exactly the right battery for their specific site conditions.

Practical applications on the construction site

Quiet site operation and compliance with noise standards

In urban environments or indoor spaces, noise standards are strict. Battery packs operate almost silently, allowing contractors to work smoothly without complaints from nearby residents or supervisors.

Emission-free energy for indoor and outdoor use.

No CO₂, NOx or particulate matter. Battery packs are the ideal solution for renovations, indoor works and locations where emission-free energy is mandatory.

Power supply of electric machines

With a continuous output of up to 5 kW, devices such as grinders, drills, welding generators or power tool charging stations can be easily powered. Thanks to the multi-output configuration, several devices can be connected simultaneously, depending on capacity.

Temporary or mobile use

Construction sites require flexibility in power supply. Battery packs can be quickly placed and moved for temporary lighting, emergency power, events or renovations without complex installation.

Hybrid integration with existing power sources

Portable battery packs can be combined with diesel generators or grid power, increasing energy security and autonomy on site.

Comparison with diesel generators

The difference is clear: LiFePO4 batteries provide quiet, emission-free, low-maintenance energy that is often even more cost-effective when used intensively, especially when you factor in total operating costs.

Choosing the right battery capacity

Renopower BWC2500 - compact construction site solutions

• Capacity: 2.5 kWh
• Continuous power: 2.5 kW
• Application: lighting, small power tools, laptops or tablets on site

Renopower BW3600 - medium power

• Capacity: 3.072 kWh
• Continuous power: 3.6 kW
• Application: standard yard machinery, grinding wheels, drills, welding aggregates

Renopower BW5000 - high-end applications

• Capacity: 5.04 kWh
• Continuous power: 5 kW
• Application: heavy and long-term applications or multiple machines simultaneously

Sizing tips:

1. Determine the average energy consumption in kW of the machines used.
2. Estimate the desired operating time in hours.
3. Take into account peak capacities when multiple machines are used simultaneously.

Maintenance, safety and sustainability

Safety

• Avoid extreme temperatures or mechanical damage during transport and storage.
• Always use proper plugs and connections according to technical guidelines.

Maintenance

• Minimal maintenance required: only follow up cycles and periodic charging.
• No oil, filters or motor parts required as with generators.

Optimizing service life

• Follow charging and discharging strategies: ideally stay between 20-80% capacity for maximum life.

Environmental impact

• No direct emissions during operation.
• Reusable and recyclable components reduce carbon footprint.

Fimatec's customization and service

At Fimatec, we offer tailor-made battery solutions for your construction site:

1. Readily available: large stock for fast delivery.
2. Customized advice: tailored to your machines and site needs.
3. Support: installation, maintenance and temporary rental for repairs or long-term projects.

Contact Fimatec at sales@fimatec.com or +32(0)56 61 67 01