Lithium Smart battery 12,8V
- With integrated cell balancing
- Can be parallel and series connected
- Bluetooth app available to monitor cell voltage and temperature
- VE.Bus BMS – recommended for systems with our inverter/chargers.
- miniBMS – recommend for use in small systems.
- Battery Management System BMS 12/200 – recommend for use in Automotive and Marine systems having DC-loads and Alternators.
- Smart BMS CL 12/100 – recommended for use in Automotive and Marine systems having DC-loads and Alternators.
Lithium-iron-phosphate (LiFePO4 or LFP) is the safest of the mainstream li-ion battery types. The nominal voltage of a 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, fully charged). • If it is left partially charged or worse, fully discharged (yacht or mobile home during wintertime). A 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 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 leadacid battery is 80%. The round-trip energy efficiency of a 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, a 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. Cycle life 2500 cycles at 80% DOD, 5000 cycles at 50% DOD.
With Bluetooth cell voltages, temperature and alarm status can be monitored. Very useful to localize a (potential) problem, such as cell imbalance
100Ah – nominal voltage 12.8V, nominal energy 1280Wh, max. Charge current 200A, max continuous discharge current 200A, recommended max discharge current <100A, end of discharge voltage 11.2V, dimensions 321 x 197 x 152mm, weight 15kg