New LITJET traction batteries for scrubbing machines: a detailed overview of the updated line!

The modern professional cleaning market places increasingly stringent requirements on the autonomy and reliability of cleaning equipment. In response to these challenges, LITJET has made a strategic decision to expand its range of lithium iron phosphate (LiFePO4) traction batteries designed for intensive use in scrubbing machines. The updated GREEN series includes three flagship models for 24 and 36 V with a capacity from 100 to 150 Ah, which are already ready to replace outdated lead-acid analogues in the equipment of most popular global brands.

In this article, we take a detailed look at the design changes made to the batteries, who these new products are primarily intended for, and what you should pay close attention to when choosing a power source for your floor scrubber.

Updated GREEN Series: New Horizons of Autonomy

The lineup of traction batteries has been expanded with three high-tech models at once, each meeting a specific market need — from compact walk-behind scrubbers for small premises to heavy ride-on scrubbers for airports and logistics hubs:

• LITJET GREEN LiFePO4 36 V 150 Ah — the absolute flagship of the series, designed for large floor scrubbers requiring maximum runtime to allow full-shift cleaning without stopping for recharging;
• LITJET GREEN 24 V 100 Ah — a medium-capacity model considered the "sweet spot" for most walk-behind scrubbers with a 24 V electrical system, providing an ideal balance between dimensions and operating range;
• LITJET GREEN LiFePO4 24 V 150 Ah — an increased-capacity version for 24-volt systems, built specifically for long work shifts and heavy-duty operating conditions where every minute of uninterrupted operation is critical.

All three batteries are housed in a compact and rugged metal case that not only protects internal components but also serves as an effective heat sink. In addition, each model features a built-in Bluetooth module for remote monitoring, an advanced BMS board with enhanced cell balancing, and top-mounted M8 terminals for fast and convenient connection with equipment power cables. Company engineers adapted the design specifically for typical cleaning conditions — intense vibrations, high humidity, and frequent deep discharges, which are the norm for this class of equipment.

Why Professional Floor Scrubbers Require Traction LiFePO4 Batteries Specifically

A floor scrubbing machine is a specialized piece of equipment that cannot be compared to a car or an uninterruptible power supply (UPS). Its battery operates under extreme conditions that can significantly reduce the lifespan of conventional batteries within just a few months. To understand the importance of choosing the right chemistry, it is worth highlighting the key operating features of cleaning equipment:

• Deep discharge-charge cycles — during a single work shift, a scrubber's battery may be discharged to 80% or deeper multiple times, which is critical for many battery types;
• Continuous heavy loads — brush motors and powerful vacuum turbines consume high, constant current for several hours continuously, placing a serious strain on the electrochemical system;
• High inrush currents — brief peak loads occur when electric motors start up, which can damage weak BMS boards;
• Constant exposure to vibration and moisture — the machine body is subjected to impacts when moving over uneven surfaces, as well as constant contact with cleaning solution splashes and water;
• Inclined operation and space constraints — the battery compartment is not always strictly horizontal, placing special requirements on leak tightness.

Under such aggressive conditions, lead-acid batteries (AGM, GEL, or flooded) rapidly lose their nominal capacity and require full replacement after just 12–18 months of active use. Lithium Iron Phosphate (LiFePO4) chemistry represents a completely different class of solutions engineered specifically for demanding traction scenarios. It guarantees up to 3,000–5,000 cycles at 80% depth of discharge (compared to lead-acid counterparts that barely reach 500 cycles), delivers stable voltage-current characteristics under load (the machine does not lose power toward the end of a shift), has no memory effect, weighs 2.5–3 times less at comparable capacity, and comes equipped with a smart BMS board for total protection against abnormal conditions.

Key Changes and Engineering Solutions in the New LITJET GREEN Series

When developing the updated GREEN series, LITJET engineers reviewed virtually every aspect of manufacturing, emphasizing reliability and durability tailored to daily industrial use. Let us examine the most significant improvements in detail.

Advanced Potting and Environmental Protection

One of the most important technological solutions was fully potting the internal housing space with a special two-component compound. This procedure fundamentally changes the approach to electronic and cell protection, fulfilling several strategic objectives at once:

• Reliably isolates the control board and power elements from moisture ingress, water splashes, and aggressive condensation formed during temperature fluctuations;
• Effectively dampens mechanical vibrations and shock loads transmitted from the machine's chassis and working components to internal parts;
• Completely eliminates the risk of oxidation on contact pads, ribbon cables, and conductive PCB traces, which is a common cause of failure in unpotted alternatives;
• Improves overall heat distribution and enables faster dissipation of excess heat from cells during peak load periods.

For floor scrubbers operated daily in wet environments with harsh chemicals, this level of protection is critical. Field experience shows that in standard non-potted batteries, solder joints and terminal connections are the first components to fail.

New Casing: Transition from Plastic to High-Strength Metal

In the GREEN series, engineers made the deliberate decision to abandon traditional plastic enclosures in favor of an all-welded metal structure. This upgrade delivers several key operational advantages:

• High mechanical rigidity ensures internal components remain intact even under severe vibration and accidental impacts, preventing cell deformation;
• Improved heat dissipation is achieved because the metal walls act as a radiator, rapidly transferring excess heat to the environment;
• Chemical resistance allows the use of alkaline or chlorine-containing detergents that frequently splash onto the casing without degrading the material;
• High repairability — unlike non-dismantlable molded plastic boxes, the metal casing can be carefully opened by qualified technicians at a service center for diagnostics or maintenance.

It is important to note that the dimensions of the new metal casings are precisely engineered to fit standard battery compartments of popular floor scrubbers, including models from Kärcher, Tennant, Nilfisk, Comac, Cleanfix, Fimap, Columbus, Taski, IPC, Hako, and others. This means replacing an old stock battery with a LITJET GREEN battery requires no structural modifications to the compartment or mountings.

Top-Mounted M8 Power Terminals for Service Convenience

To simplify the connection process and improve maintenance safety, the power terminals are now located on the top panel of the enclosure. All models feature standard M8 threaded connections. Thanks to this layout, power cables connect conveniently without pressing against compartment walls or kinking during routing. Furthermore, heat-shrink insulation and cable lugs are no longer subjected to mechanical stress, reducing the risk of wire breakage during operation.

BMS Board Upgrade: Intelligence Safeguarding Performance

One of the most significant upgrades is a complete overhaul of the Battery Management System (BMS) hardware platform. Models with capacities of 24 V 50 Ah and 24 V 75 Ah, previously part of the Black series, received new firmware and expanded functionality, promoting them to the premium GREEN lineup. Engineers adapted the BMS algorithms specifically for professional cleaning tasks:

• Increased maximum allowable discharge current to ensure stable operation of high-power vacuum turbines and brush motors;
• Optimized voltage protection thresholds to accommodate the inrush current characteristics of scrubber electric motors;
• Enhanced active cell balancing system, ensuring even charge distribution across all cells and extending overall battery pack lifespan;
• Added built-in reverse polarity protection to prevent electronic failure in the event of accidental improper wire connection.

Built-In Bluetooth Module for Remote Monitoring

Every battery in the updated GREEN series comes equipped with an integrated Bluetooth module supporting modern communication protocols. Using a proprietary mobile app, a service engineer or operator can view comprehensive real-time battery status data: current voltage, exact remaining capacity percentage, charge/discharge currents, internal temperature, total cycle count, and a full log of BMS warnings and errors.

Support for External LCD07 Display

The updated models support direct connection to an optional detachable LCD07 display. This compact device can be mounted directly on the floor scrubber's control panel in front of the operator. The display mirrors key battery parameters, eliminating the need for staff to pull out a smartphone to check remaining runtime.

GREEN Model Range: Choosing the Right Battery for Your Needs

Each of the three GREEN series models targets specific classes of floor scrubbers. Understanding these nuances will help you make the right choice and maximize your investment return.

LITJET GREEN LiFePO4 36 V 150 Ah (5,760 Wh)

This is the most powerful and energy-dense battery in the lineup, featuring an energy reserve of 5,760 Wh. It is designed for demanding multi-shift applications across large areas.

Recommended for:

• Large ride-on scrubbers with a 36 V electrical system, such as Kärcher B150, B200, and B250 series, as well as Tennant T16 and S16 models;
• Class A and B logistics hubs, large warehouse terminals, airports, and major shopping centers with vast floor areas;
• Machines with multiple disc or cylindrical brushes and high-performance vacuum units that draw substantial current.

Result: complete a full work shift without intermediate recharges, with zero drop in power or brush speed near the end of the shift.

LITJET GREEN 24 V 100 Ah (2,560 Wh)

A versatile, well-balanced 24 V model offering an optimal ratio of size, weight, and performance across a wide range of tasks.

Recommended for:

• Popular walk-behind scrubbers and compact ride-on models, including Kärcher BD 43/25, BD 50/50, BD 70/75 W, Tennant T3, T5, T7, GADLEE GT50, GT55, GT85, as well as IPC CT90, BT70, CT70, and CT160 models;
• Daily maintenance cleaning in supermarkets, office centers, and retail galleries up to 1,500–2,000 m²;
• Cleaning companies managing a standardized fleet of 24 V equipment.

Result: a stable 4–6 hours of continuous operation in mixed mode, significant weight reduction compared to lead-acid, and seamless integration into standard battery compartments.

LITJET GREEN LiFePO4 24 V 150 Ah (3,840 Wh)

A high-capacity model for 24-volt systems that significantly increases operating autonomy without requiring a transition to a higher voltage platform.

Recommended for:

• Heavy-duty floor scrubbers with a 24 V electrical system and larger battery boxes, such as Kärcher BD 70, BD 75/120 R, BD 90/160 R, Tennant T5, T7, IPC CT90, BT70, CT70, and CT160;
• Facilities where cleaning is performed across multiple consecutive shifts without long charging breaks;
• Direct replacement for older dual 12 V heavy lead-acid battery packs rated at 150–200 Ah, keeping existing operational routines unchanged.

Result: extended energy capacity for longer duty cycles, plus complete remote monitoring via the integrated Bluetooth BMS.

Practical Tips for Choosing a Floor Scrubber Battery

Before making a purchase and committing to Lithium Iron Phosphate batteries, we strongly recommend double-checking several key parameters of your equipment:

1. Electrical system voltage — must strictly match 24 V or 36 V. This specification is listed in your scrubber's manual or on the factory nameplate of the original battery.
2. Internal battery compartment dimensions — measure length, width, and available height. When choosing a LITJET GREEN model, allow a clearance margin of at least 10–15 mm on each side for easy installation and power cable ventilation.
3. Cable lug type — because the new batteries feature top-mounted M8 bolt terminals, verify the length and terminal type of your existing wiring. Replace cable lugs or use adapter fittings if necessary.
4. Charger specifications — note that older chargers designed for GEL or flooded lead-acid batteries must never be used with lithium. LiFePO4 requires a dedicated charger using a CC/CV profile with precise cutoff voltages: 29.2 V for 24 V systems and 43.8 V for 36 V systems. Compatible chargers can be sourced directly from the manufacturer.
5. Operating temperature — while lithium batteries can operate in slight sub-zero conditions (down to -10°C), charging must strictly occur in a heated room above 0°C to preserve cell life.
6. Onboard indicator compatibility — ensure the machine's built-in discharge indicator accurately reads LiFePO4 discharge curves (which differ from lead-acid). Otherwise, using the external LCD07 display is strongly recommended for precise capacity tracking.

Economic Rationale for Switching to LiFePO4

Although initial capital expenditure for lithium iron phosphate batteries is higher than for lead-acid alternatives, calculating the Total Cost of Ownership (TCO) over several years demonstrates undeniable financial benefits.

Over a typical 5-year operating lifecycle of a floor scrubber, you would need to purchase and dispose of 2 to 3 sets of heavy lead-acid traction batteries, spending ongoing time on maintenance, fluid checks, and topping off distilled water. A single LITJET GREEN battery covers power needs for the machine's entire service life, eliminating downtime and maintenance costs. In practice, reduced electricity expenses, lower service costs, and avoided battery replacements yield full ROI within 1.5–2 years of intensive operation.

Conclusion

The updated GREEN LiFePO4 series represents a well-conceived step forward in LITJET's product evolution. Full compound potting, a durable metal enclosure, a smart BMS board with cleaning-optimized firmware, plus integrated Bluetooth monitoring and external display support make these batteries a benchmark solution for professional cleaning equipment. They deliver maximum service life, high safety, and predictable performance — critical advantages for businesses that value time and reputation.

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