Autonomous photovoltaic system for refrigerator 12V / 65watt - 75 watts
Autonomous photovoltaic kit / package for small refrigerator 65-75 watt / 12V or 220V by adding inverter
Victron LiFePO4 battery 12,8V/160Ah closed type, with a large number of charge and discharge cycles for very long discharge depths.
Available on backorder
The Victron LiFePO4O Lithium Iron Phosphate (LiFePO4 or LFP) Battery is the safest of the main types of lithium ion batteries. The nominal voltage of an LFP cell is 3,2V (lead-acid batteries: 2V/cell). Therefore, a battery LFP 12,8 V consists of 4 elements connected in series. and a 25,6V battery consists of 8 cells connected in series.
The Victron LFP battery does not need to be fully charged. Lifetime is even slightly improved on a partial charge instead of a full charge. This is a major advantage of LFP compared to lead-acid. Other advantages are wide operating temperature range, excellent cycling performance, low internal resistance and high efficiency.
Efficiency
In many applications (especially off-grid solar and/or wind), energy efficiency can be critical. The round trip energy efficiency of an LFP battery is 92%. The charging process of lead-acid batteries becomes particularly inefficient when the 80% state of charge is reached, resulting in 50% efficiency or even less in solar systems where several days of backup power are required (battery operating at 70% to 100% charged state ). In contrast, an LFP battery will still achieve 90% efficiency under shallow discharge conditions.
Cell balancing and monitoring
LFP batteries have built-in balancing and cell monitoring. Up to 5 batteries can be paralleled and up to four 12V batteries or two 24V batteries can be connected in series so that a 48V battery pack of up to 1500Ah can be assembled. Cell balancing/monitoring cables can and must be connected to a battery management system (BMS).
Bluetooth app available to monitor cell voltage and temperature.
Battery Management System (BMS)
The BMS:
1.It generates an alarm whenever the voltage of a battery cell drops below 3,1V (2,85-3,15V adjustable).
2. Disconnects or turns off the load whenever the voltage of a battery drops below 2,8V (adjustable 2,6V-2,8V).
3. Stops the charging process whenever the voltage of a battery cell rises to more than 4,2V.
4. Shuts down the system whenever the temperature of a cell exceeds 50°C.
Requires one of these BMS:
Battery specifications | ||||||||
VOLTAGE AND CAPACITY |
LFP-
Smart 12,8/50 |
LFP-
Smart 12,8/60 |
LFP-
Smart 12,8/100 |
LFP-
Smart 12,8/160 |
LFP-
Smart 12,8/200 |
LFP-
Smart 12,8/300 |
LFP-
Smart 25,6/200 |
|
Nominal voltage | 12,8V | 12,8V | 12,8V | 12,8V | 12,8V | 12,8V | 25,6V | |
Nominal capacity @ 25°C* | 50Ah | 60Ah | 100Ah | 160Ah | 200Ah | 300Ah | 200Ah | |
Nominal capacity @ 0°C* | 40Ah | 48Ah | 80Ah | 130Ah | 160Ah | 240Ah | 160Ah | |
Nominal capacity @ -20°C* | 25Ah | 30Ah | 50Ah | 80Ah | 100Ah | 150Ah | 100Ah | |
Nominal energy @ 25°C* | 640Wh | 768Wh | 1280Wh | 2048Wh | 2560Wh | 3840Wh | 5120Wh | |
*Discharge current ≤1C | ||||||||
CYCLE LIFE (capacity ≥ 80% of nominal) | ||||||||
80% DoD | 2500 cycles | |||||||
70% DoD | 3000 cycles | |||||||
50% DoD | 5000 cycles | |||||||
DISCHARGE | ||||||||
Maximum continuous
discharge current |
100A | 120A | 200A | 320A | 400A | 600A | 400A | |
Recommended continuous
discharge current |
≤50A | ≤60A | ≤100A | ≤160A | ≤200A | ≤300A | ≤200A | |
End of discharge voltage | 11,2V | 11,2V | 11,2V | 11,2V | 11,2V | 11,2V | 22,4V | |
OPERATING CONDITIONS | ||||||||
Operating temperature | Discharge: -20°C to +50°C | Charge: +5°C to +50°C | ||||||
Storage temperature | -45 ° C to + 70 ° C | |||||||
Humidity (non-condensing) | Max. 95% | |||||||
Protection class | IP 22 | |||||||
CHARGED | ||||||||
Charge voltage | Between 14V/28V and 14,4V/28,8V (14,2V/28,4V recommended) | |||||||
Float voltage | 13,5V / 27V | |||||||
Maximum charge current | 100A | 120A | 200A | 320A | 400A | 600A | 400A | |
Recommended charge
current |
≤30A | ≤30A | ≤50A | ≤80A | ≤100A | ≤150A | ≤100A | |
OTHER | ||||||||
Max storage time @ 25°C* | 1 year | |||||||
BMS connection | Male + female cable with M8 circular connector, length 50cm | |||||||
Power connection (threaded
inserts) |
M8 | M8 | M8 | M8 | M8 | M10 | M8 | |
Dimensions (hxwxd) mm | 199 x 188 x 147 | 239 x 286 x132 | 197 x 321 x 152 | 237 x 321 x 152 | 237 x 321 x 152 | 347 x 425 x 274 | 317 x 631 x 208 | |
Weight | 7kg | 12kg | 15kg | 20kg | 22kg | 51kg | 56kg | |
*When fully charged |
Weight | 3 kg |
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