LIFEPO4 VICTRON Energijos baterijos
  • LIFEPO4 VICTRON Energijos baterijos

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Gamintojas: Victron energy

LIFEPO4 VICTRON Energijos baterijos

LiFePO4 batteries Victron Energy

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.

Rugged
A lead-acid battery will fail prematurely due to sulfation if:
  • If it operates in deficit mode during long periods of time (i. e. if the battery is rarely, or never atall, fully charged).
  • If it is left partially charged or worse, fully discharged (yacht or mobile home during winter time).

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 temperaturerange, excellent cycling performance, low internal resistance and high efficiency (see below).
LFP is therefore the chemistry of choice for very demanding applications.
Efficient
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 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

 

These batteries have integrated Cell Balancing, Temperature and Voltage control (BTV). Up to ten batteries can be paralleled and up to four batteries can be series connected (BTV’s are simply daisy-chained) so that a 48V battery bank of up to 2000Ah can be assembled. The daisy-chained BTV’s must be connected to a batterymanagement system (BMS).


 

LFP-BMS 12,8/60

LFP-BMS 12,8/90

LFP-BMS 12,8/160

LFP-BMS 12,8/200

Rated voltage [V] 12,8
Capacity @ 25°C [Ah] 60 90 160 200
Capacity @ 0°C[Ah] 48 72 130 160
Capacity @ -20°C [Ah] 30 45 80 100
Energia w 25°C [Wh] 768 1152 2048 2560
Cycle life 2000 @80%DoD, 3000@70%DoD, 5000@50%DoD
Maximum continuous
discharge current [A]
180 270 400 500
Recommended continuous
discharge current [A]
≤60 ≤90 ≤160 ≤200
Maximum 10 s pulse current
[A]
600 900 1200 1500
End of discharge voltage [V] 11
Operating temperature -20°C +50°C (do not charge when battery temperature<0°C)
Storage temperature -45°C +70°C
Humidity (non condensing) 95%
Protection class IP54
Charge voltage [V] 14 - 15
Float voltage [V] 13,6
Maximum charge current [A] 180 270 400 500
Recommended charge current [A] ≤30 ≤45 ≤80 ≤100
Dimensions (hxwxd) mm 235/293/139 249/293/168 320/338/233 295/425/274
Weight [kg] 12 16 33 42

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