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Lithium Batteries

Sunsynk have produced a perfect storage solution. The module consists of Lithium-ion rechargeable batteries with 5.12kwh capacity rated at 51.2V 100Ah with a built-in battery management system.

The battery can be expected to remain serviceable for more than 10 years and this takes into consideration that it is changed and discharged once at room temperature (25°C).
Olivine Lithium-ion phosphate batteries provide excellent thermal stability and storage. The module also incorporates a self-monitoring function for the detection of any abnormalities in power storage.

Lithium Battery.png
  • Cell Type - Lithium Ferro Phosphate (LifePO4 or LFP)

  • Nominal Operating Voltage - 51.2V

  • Nominal Capacity - 100Ah / 5.12kWh

  • Depth of Discharge (DoD) - 100%

  • Usable Capacity - 5.12kWh

  • Packing - 1P16S

  • IP Rating - IP40

  • Minimum Operating Voltage - 44.8V

  • Maximum Operating Voltage - 57.6V

  • Standard Charging Current - 50A

  • Max. Continuous Charging Current - 50A

  • Standard Discharging Current - 50A

  • Max. Continuous Discharging Current - 100A (1C, 25°C ± 2°C)

  • Max. Pulse Discharging Current - 200A (2C, 30S, 25°C ± 2°C SOC≥40%)

  • Standard Charging Method - 0.5C CC to 57.6V, CV at 57.6V till current is 0.05C

  • Min. Operating Temperature (no derating) - Charging: 0°C / Discharging: -20°C

  • Max. Operating Temperature (no derating) - Charging: 50°C / Discharging: 55°C

  • Operating ROH - 20% ~ 80%

  • Storage Temperature - -20 ~ 50°C

  • Self-discharging rate - ≤5% (25°C 50% SoC)

  • SoC @ end of product line - 40%

  • Insulation Resistance - >100MΩ

  • Voltage Difference in each module - ≤20mV

  • Inner Resistance of single Cell - 0.34 ± 0.05mΩ (fresh cell 30 ~ 40% SoC)

  • Altitude Below - 2000m

  • Weight - 48kg

  • Dimensions - 440 x 530 x 132mm (not include connector, MSD and other parts)

  • Expected Life @ 25°C - Greater than 10 years if used as per warranty terms

Trouble Shooting

When SoC drops 0% and the communication could not be established automatically.

Why sometimes the SoC will not achieve 100% or 0% at the end of charing or discharging.

Beeping at the end of charging stage (99%-100% SoC).

Why the master pack suffered seriously under-voltage.

How to wake up battery.

Helpful Documents

DIP Switch Setting

Software Upgrading

BMS SoC and SoH Estimation

BMS Functional Description with Communication Protocol