Superpack 25 6v 50 ah victron energy battery

Battery technology: LiFePO4

Nominal battery voltage [V]: 25.6

Battery charging voltage [V]: 28.4 - 28.8

Maintenance charging voltage [V]: 27

Minimum discharge voltage [V]: 20

Peak discharge current (10 seconds) [A]: 100

Maximum charging current [A]: 50

Maximum continuous discharge current [A]: 50

Nominal battery capacity at 25 oC [Ah]: 50

Nominal battery capacity at 0 oC [Ah]: 40

Useful battery capacity [kWh]: 1.28

Weight [kg]: 14

Dimensions [mm]: 330 x 220 x 171

Lithium SuperPack, LiFePO4, lithium batteries are the safest lithium-ion batteries. The nominal cell voltage in LiFePO4 25.6 V is 3.2 V (lead-acid 2 V / cell) and the entire battery consists of 8 cells connected in series.

Built-in BMS system and safety switch Installing SuperPack batteries is extremely simple and does not require any additional components. An internal switch disconnects the battery in the event of a risk of excessive discharge, overcharging or overheating. Batteries can be connected in parallel. Serial connection is not allowed.

Performance

In some applications (off-grid systems or wind farms), energy efficiency may be crucial. This round-trip efficiency (discharging from 100% to 0% and charging from 0% to 100%) for an average lead-acid battery is 80%. The energy efficiency of LiFePO4 batteries in both directions is as much as 92%.

The charging process for lead-acid batteries becomes particularly inefficient after reaching 80% of the state of charge, resulting in an efficiency of 50% or even less, which may be a problem in the case of off-grid PV systems where an energy reserve of several days is required. If LiFePO4 batteries are used, they will still achieve 90% efficiency even under high discharge conditions.

They are very durable Lead-acid batteries fail prematurely due to sulfation if:

They are rarely or never fully charged

They are partially charged or, worse yet, completely discharged LiFePO4 batteries do not need to be fully charged to operate efficiently and for a long time. They do not lose their efficiency. Therefore, they work well in places where they are not constantly used, e.g. in caravans, campers on boats or in summer houses at different times of the year. Other advantages include a wide range of operating temperatures, high efficiency also in winter, excellent cyclic parameters, low internal resistance and high energy efficiency. LFP batteries are perfect for use in places with very demanding conditions.