Cordless tools have transformed how professionals and DIYers work, and much of that progress has been driven by improvements in battery technology. Longer runtimes, faster charging and cooler operation are all part of the push to make cordless equipment a true alternative to corded or petrol-powered machines.
Makita’s recent release of the BL4040F battery brings a significant new development to the UK market. This 40VMax XGT 4.0Ah pack is the first in Makita’s line-up to use tabless cell technology. This design removes the bottlenecks of older batteries and promises a step forward in performance and reliability.
Why Traditional Tabbed Batteries Struggle
Lithium-ion batteries have traditionally used thin metal strips, or tabs, to connect the anode and cathode to the terminals. While this design has served well for years, it introduces a weakness when very high currents are required.
- The tabs create a narrow pathway that increases resistance.
- This resistance generates heat, especially under heavy loads.
- Heat slows down charging, reduces efficiency and can shorten battery lifespan.
- High-output tools such as demolition hammers and cordless chainsaws push these limits further.
As tools grow more demanding, the tabbed design struggles to keep pace.
How Tabless Battery Technology Works
The breakthrough in the BL4040F lies in the way each cell connects directly to the terminal, eliminating the thin strip connection. This broader contact area means current can flow more easily and evenly across the cell.
By removing the bottleneck, tabless batteries:
- Reduce resistance within each cell.
- Run cooler during operation.
- Charge faster after heavy use.
- Maintain higher power output for longer periods.
The end result is a battery that performs better in high-drain applications while lasting longer across its service life.
Performance Gains with the BL4040F
Makita’s BL4040F delivers up to 2.1kW of output, matching the larger 5.0Ah BL4050F. For users, this means the choice between a higher-capacity pack or a smaller, lighter option without losing output.
Independent reviews and early testing videos suggest the tabless pack outperforms the older BL4040 in areas such as runtime, charging speed and heat management. While long-term durability studies are not yet available, the controlled tests point to real improvements in demanding tasks such as grinding, cutting and pruning.
Compared with the BL4050F, the BL4040F is:
- 34% more compact.
- 28% lighter.
- Capable of delivering the same power output.
For tradespeople and landscapers, that balance of reduced weight and uncompromised output could be a strong reason to switch.
Real-World Applications
The BL4040F is designed for Makita’s XGT 40VMax system, which already includes breakers, saws, grinders, chainsaws and more. Tools that demand continuous high power will benefit the most.
Examples include:
- Cordless chainsaws – longer runtime and cooler operation help during sustained cutting.
- Demolition hammers – heavy loads require consistent high power delivery.
- Angle grinders and circular saws – high-drain tasks can push older batteries into overheating, where tabless designs shine.
For trades where downtime equals lost earnings, the ability to recharge immediately after heavy use, without waiting for batteries to cool, could be especially valuable.
The Role of Brushless Motors and Digital Communication
Makita has paired its tabless battery with familiar features from the XGT line. The BL4040F still communicates digitally with the tool, monitoring load, discharge levels and temperature. This helps prevent overload and overheating. Combined with brushless motor technology in many XGT tools, the battery is part of a wider ecosystem designed for efficiency and durability.
Impact resistance, dust protection and shock absorption are also built in, ensuring the pack withstands the challenges of real job sites.
The Bigger Picture for the UK Market
The release of the BL4040F is more than a product update. It signals Makita’s recognition of where the market is heading. UK professionals are demanding tools that match or exceed petrol performance without the downsides of fuel, emissions or noise. As regulations and user expectations shift towards cleaner and more efficient solutions, advances in battery design are crucial.
Other brands are exploring pouch cells and alternative chemistries, but Makita’s decision to embrace tabless cylindrical cells shows a different path. Whether this becomes a standard across their entire range remains to be seen, but the BL4040F demonstrates the potential.
What We Know and What Remains to Be Seen
At this stage, most of the information about the BL4040F comes from Makita’s own testing and early third-party demonstrations. We know:
- It claims up to 35% more power than the older BL4040.
- It runs up to 32% cooler under load.
- It can be charged fully in around 45 minutes.
- It matches the 2.1kW output of the 5.0Ah pack while being smaller and lighter.
What remains less clear is how the battery will perform after months or years of daily site use. Durability, cycle life and consistency under varied conditions are yet to be confirmed through independent long-term testing.
Looking Ahead
The BL4040F may be the first of several Makita tabless batteries. If the technology proves successful, it could expand to higher capacities, making the XGT system even more attractive to professionals who rely on consistent high power. For now, it offers a choice that combines output with reduced size and weight, a balance many tradespeople have been waiting for.
FAQ’s
Q1: What tools benefit most from the BL4040F battery?
A1: High-drain tools such as cordless chainsaws, demolition hammers, breakers and grinders gain the most from the improved output and cooler running design.
Q2: How does the BL4040F compare with the BL4050F?
A2: Both provide 2.1kW of maximum output, but the BL4040F is smaller and lighter, while the BL4050F offers a longer runtime due to its higher 5.0Ah capacity.
Q3: Can the BL4040F be charged straight after heavy use?
A3: Yes, Makita claims the tabless design allows immediate recharging without needing to cool down first.
Q4: Is the BL4040F compatible with all Makita XGT 40VMax tools?
A4: Yes, it works across the entire XGT system just like other XGT batteries.
Q5: Will Makita expand tabless technology to other batteries?
A5: Makita has not confirmed further models, but the introduction of the BL4040F suggests broader adoption is likely if performance matches expectations in the field.
