LE300 – Lithium Extension Battery. This lithium battery can be combined with any lead acid system and improves the system performance and lifetime immediately.


BOS LE300. LITHIUM EXTENSION.

EXTEND ANY LEAD ACID BATTERY SYSTEM WITH LiFePO4 HYBRID TECHNOLOGY


THE LE300 LITHIUM BATTERIES ARE A FULLY SCALABLE SOLUTION TO ENHANCE PERFORMANCE AND ADD CAPACITY TO LEAD ACID BATTERIES IN SOLAR AND ANY OTHER KIND OF ENERGY STORAGE SYSTEMS. THEY CAN BE USED WITH NEW OR EXISTING 12V LEAD ACID BATTERIES. JUST STACK THEM IN PARALLEL TO MEET YOUR SPECIFIC SYSTEM SPECS.

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Like in all BOS AG Hybrid battery systems the lithium battery takes most of the charging cycles while the lead acid battery provides inexpensive backup capacity. The lead acid battery is charged with higher priority,the lithium battery takes all surplus energy. This helps to increase the lead acid battery life.
The system recognizes the lead acid battery voltage and automatically starts to support the lead acid battery witha maximum current of 12.5A per unit. Bigger loads get supplied by the lead acid and the lithium battery in parallel, resulting in smaller currents for each battery.

 


LITHIUM PERFORMANCE AT LEAD ACID COSTS

In pure lead acid systems, batteries often fail within 1 to 3 years, as batteries get damaged by continuous operation at low states of charge. Pure lithium systems perform way better and show longer lifetimes, but are very expensive. Initial investment costs for hybrid systems are close to the costs of pure lead acid systems and approx. 50% lower than pure lithium systems. As costs per stored kWh are around 60% lower in hybrid systems than in lead acid systems, the hybrid system becomes the most cost effective option already in the first 3 years.


CORE BENEFITS

Flexible capacities by simply connecting several packs

• State of the art LiFePO4 batteries

• Retrofitting & extension of already installed systems without change in wiring or other components

• No additional controller needed, simply connect directly to the lead acid batteries

• Lead acid battery is charged with higher priority, lithium battery is discharged first

• Lithium performance and lead acid cost advantages are combined

• Plug & Play > simply connect two cables

• Robust aluminium housing with variable fixing possibilitiesway.

 


LITHIUM FOR CYCLING, LEAD ACID FOR BASIC LOAD

BOS hybrid systems combine the advantages of both battery technologies. During the day the lead acid battery is charged with higher priority, resulting in long hours at full state of charge. Surplus energy is stored in the lithium battery, which is used for small cycles and operated in its perfect operation mode by taking advantage of its DOD >90% and its high cycle life. The lead acid battery is only used to power loads once the lithium battery is flat, offering additional power and high backup capacities, whilst staying in a high state of charge at most times.


LONGER BATTERY LIFETIME

The lead acid battery is not strained by deep charging cycles, as the lithium battery is used for running daily cycles. During its long hours at full state of charge the lead acid battery is floated. Compared to pure lead acid systems both effects positively impact the lead acid battery lifetime. By preventing harmful sulphation the lifetime can be increased to more than 10 years. This lowers energy storage costs significantly and has a positive impact on the environment. The lithium battery offers enough charging cycles for more than 10 years of daily use. The lithium battery furthermore recharges the lead acid battery in case that it didn't get fully charged during the day, a case whoch frequently happens in solar applications.


EASY UPGRADE OF LEAD ACID SYSTEMS

In existing lead acid systems the battery capacity can be increased by adding the LE lithium extension battery (whilst it is technically not recommended to mix old and new lead acid batteries). The LE300 simply needs to be connected with + and -  straight to the lead acid battery (or the lead acid battery ocnnectors at the charge controllers). This improves system performance and decreases power costs immediately. The LE300 works with any standard lead acid battery charge controller that runs on 12V; any 12V lead acid battery component can be used. In existing systems the electrical installation can stay the same, hence efforts and additional costs are minimized.


LE300 SYSTEM KEY TECHNICAL SPECIFICATIONS

LE300 Technical Data Table ver01

 

 

 

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