An inevitable shift in the energy storage industry
For more than 160 years, lead-acid batteries have represented the standard for backup applications, telecommunications, security systems, UPS units, and small electric mobility equipment. Their reliability, low initial cost, and global availability have made them an almost universal choice.
Today, however, the energy industry is undergoing one of the most significant transformations in recent decades. The evolution of LiFePO₄ (Lithium Iron Phosphate) technology, European regulatory pressure, and the maturation of production processes inspired by the electric vehicle industry are fundamentally changing how we approach energy storage.
In this context, DuraVolt emerges — a new generation of intelligent LiFePO₄ batteries developed by EBS Electric Group and marketed through the energy solutions portfolio Konnect Plus. Designed to directly replace traditional lead-acid batteries, the DuraVolt range delivers significantly higher performance, extended lifespan, and compliance with upcoming European battery regulations.
What is DuraVolt?
DuraVolt is a range of 12.8 V LiFePO₄ batteries designed for direct compatibility with most equipment currently using 12 V battery systems.
The portfolio includes three main models:
- DuraVolt 6 – 12.8 V, 6 Ah, 76.8 Wh
- DuraVolt 20 – 12.8 V, 20 Ah, 256 Wh
- DuraVolt 40 – 12.8 V, 40 Ah, 512 Wh
These batteries are designed for a wide range of applications, from UPS systems and telecommunications to residential solar systems, security systems, caravans, boats, electric carts, and recreational vehicles.
Why 12.8 V and not 12 V?
One of the first questions users ask relates to nominal voltage.
In LiFePO₄ batteries, each cell has a nominal voltage of approximately 3.2 V. Four cells connected in series result in a total of 12.8 V — the technically correct value.
The “12 V” designation originates from the lead-acid era and is more of a commercial convention than an exact value. In practice, DuraVolt batteries are fully compatible with all equipment designed for 12 V systems.
LiFePO₄ vs. lead-acid: the game-changing difference
When comparing the two technologies, the differences are substantial.
Up to 10× longer lifespan
A DuraVolt battery can reach approximately 5,000 charge/discharge cycles at 80% depth of discharge (DoD).
In comparison, a conventional lead-acid battery typically offers 200–300 cycles under similar conditions.
This means a single LiFePO₄ battery can replace several lead-acid batteries over its lifetime.
Significantly higher usable capacity
Most lead-acid batteries should not be discharged below 50% if lifespan is to be preserved.
In contrast, LiFePO₄ batteries allow 90–100% usable capacity without significant degradation.
This effectively doubles the usable energy compared to a lead-acid battery with the same nominal capacity.
Superior energy efficiency
DuraVolt batteries achieve over 95% efficiency in charge/discharge cycles.
Lead-acid batteries typically range between 75% and 85%.
This translates into lower energy losses, faster charging, and reduced operational costs.
Lower weight
For the same energy output, a LiFePO₄ battery can be 60–70% lighter than its lead-acid equivalent.
This is especially important in mobile applications such as caravans, boats, light EVs, and portable systems.
Maintenance-free and emission-free
Lead-acid batteries often require periodic maintenance and may emit hydrogen during charging.
DuraVolt eliminates these issues:
- no electrolyte refilling
- no gas emissions
- no acid leakage
- no periodic maintenance
Total Cost of Ownership: the real performance metric
Many users compare only purchase price.
However, this is misleading.
Although LiFePO₄ batteries have a higher initial cost, Total Cost of Ownership (TCO) analysis shows a different reality.
In daily cycling applications, a DuraVolt battery can replace 5–6 lead-acid batteries over a 10-year period.
In addition, it reduces:
- replacement costs
- maintenance interventions
- hazardous waste management costs
- energy losses
The result is a total operating cost up to 4–6 times lower than traditional technology.
Three engineering innovations behind DuraVolt
1. Cylindrical LiFePO₄ chemistry – maximum safety
Lithium iron phosphate is one of the safest lithium-ion chemistries.
Compared to NMC or LCO chemistries, LiFePO₄ offers:
- high thermal stability
- resistance to overheating
- minimal thermal runaway risk
- extended lifecycle
2. Intelligent BMS system
Unlike lead-acid batteries, DuraVolt integrates a smart Battery Management System (BMS) that continuously monitors each cell.
It provides protection against:
- overvoltage
- undervoltage
- overcurrent
- short circuit
- excessive temperature
- reverse polarity
It also performs automatic cell balancing to maximize performance and lifespan.
3. Ultrasonic Wire Bonding – EV-grade technology
One of the most advanced elements of DuraVolt is its cell interconnection method.
Instead of traditional spot welding, DuraVolt uses ultrasonic wire bonding — the same technology used by leading EV manufacturers such as Tesla and BMW.
Advantages include:
- no thermal stress on cells
- lower and uniform electrical resistance
- individual cell safety behavior
- higher long-term reliability
- full process traceability
Application areas
Due to direct compatibility with existing systems, DuraVolt can be used in a wide range of applications:
- UPS and backup systems
- telecommunications infrastructure
- residential photovoltaic systems
- security and access control systems
- caravans, marine and camping applications
- light electric vehicles and mobility systems
Impact of new European legislation
The EU Battery Regulation (EU) 2023/1542 introduces strict requirements regarding:
- carbon footprint
- recycled content
- traceability
- digital battery passport
- environmental compliance
While it does not explicitly ban lead-acid batteries, compliance costs are increasing significantly.
LiFePO₄ technology is already well positioned to meet future regulatory demands.
DuraVolt is designed from the ground up for full compliance with European requirements and future integration of the Digital Battery Passport.
Conclusion
The energy storage industry is undergoing a rapid transformation. The rise of LiFePO₄ technology, improved production efficiency, and stricter European regulations are accelerating the transition away from lead-acid batteries.
DuraVolt represents a direct response to this shift, combining safe LiFePO₄ chemistry, intelligent battery management systems, and EV-grade manufacturing technologies.
The result is a battery offering higher usable energy, up to 10× longer lifespan, lower operational costs, and full alignment with future European standards.
For companies, integrators, distributors, and end users, the transition to LiFePO₄ is no longer a future option — but a strategic decision delivering immediate operational and economic benefits.
