Lithium-iron-phosphate (LiFePO4 or LFP) is the safest of the mainstream li-ion battery types. The nominal
voltage of an LFP cell is 3,2V (lead-acid: 2V/cell). A 12,8V LFP battery, therefore, consists of 4 cells connected in
series, and a 25,6V battery consists of 8 cells connected in series.
A lead-acid battery will fail prematurely due to sulfation:
? If it operates in deficit mode during long periods of time (i.e. if the battery is rarely, or never at all,
? If it is left partially charged or worse, fully discharged (yacht or mobile home during wintertime).
An LFP battery does not need to be fully charged. Service life even slightly improves in case of partial charge
instead of a full charge. This is a major advantage of LFP compared to lead-acid.
Other advantages are the wide operating temperature range, excellent cycling performance, low internal
resistance and high efficiency (see below).
LFP is, therefore, the chemistry of choice for very demanding applications.
In several applications (especially off-grid solar and/or wind), energy efficiency can be of crucial importance.
The round trip energy efficiency (discharge from 100% to 0% and back to 100% charged) of the average lead-acid battery is 80%. The round trip energy efficiency of an LFP battery is 92%. The charge process of lead-acid batteries becomes particularly inefficient when the 80% state of charge has been reached, resulting in efficiencies of 50% or even less in solar systems where several days of reserve energy is required (battery operating in 70% to 100% charged state). In contrast, an LFP battery will still achieve 90% efficiency under shallow discharge conditions.
Size and weight
Saves up to 70% in space
Saves up to 70% in weight
LFP batteries are expensive when compared to lead-acid. But in demanding applications, the high initial cost
will be more than compensated by longer service life, superior reliability, and excellent efficiency.
With Bluetooth cell voltages, temperature and alarm status can be monitored.
Very useful to localize a (potential) problem, such as cell imbalance.
Nominal voltage – 12.8V
Nominal capacity @ 25C – 200Ah
Nominal capacity @ 0C – 160Ah
Nominal capacity @ – 20C – 100Ah
Nominal energy @ 25C – 2560Wh
80% DoD – 2500 cycles
70% DoD – 3000 cycles
50% DoD – 5000 cycles
Max continuous discharge current – 400A
Recommended continuous discharge current – <200A
End of discharge voltage – 11V
Temperature – ( – 20 to + 50C)
Storage Temperature – ( – 45 to + 70C)
Max Humidity – 95%
Protection Class – IP22
Voltage – 14 – 14.4V, 14.2V recommended
Float voltage – 13.5V
Max charge current – 500A
Recommended charge current – <100A
Max storage time @ 25C – 1 year
BMS connection – Male + female cable with M8 circular connection, 50cm length
Power connection – M10
Dimensions ( h * w * d ) – 297 * 425 * 265 mm
Weight – 42.0kg