Each ARK 2.5L-A1 consists of 50Ah cells which form 51.2V voltage battery modules and sixteen serial connections (1P16S). Two to ten ARK 2.5L-A1 can be connected in parallel and extend the capacity and power of energy storage system. The same type of cell and the same software version of the PACK can be used in parallel. Specifically, the ARK battery system powers the loads through PCS at nighttime without solar; when solar becomes available during daytime, solar energy powers the loads as a priority and stores residual solar power into the ARK battery system.

ARK-2.5L-A1 consists of a battery module (including cell and mechanical parts), a battery management system (BMS) as well as power and communication terminals.


  • Flexible capacity options, 2.56kWh to 25.6kWh
  • Excellent safety of cobalt-free LiFePO4 battery
  • Easy installation with a modular and stacked design
  • Long lifespan, 10 years warranty
  • Remote firmware upgrade
  • Cobalt Free Lithium Iron Phosphate Battery

Easy Installation

  • One-person installation
  • Modular and stacked design
  • Module automatic recognition
  • IP65 rating for outdoor installation

Safety and Reliability

  • Cobalt-free LFP / LiFePO4 battery
  • High cycle stability and long lifespan
  • -10°C ~ 50°C Ambient operating temperature
  • Soft start to defend the system from surges
  • 10 Year Warranty

Battery Dimnensions and Connections

Location Port Function
1 Communication interface PCS CAN communication
2 Communication interface LINK-IN CAN communication
3 Communication interface LINK-OUT CAN communication
4 Safety vent Balance air pressure
5 Negative terminal Stands for PACK anode output
6 GND terminal Terminal connect to ground
7 Positive terminal Stands for PACK cathode output
8 USB interface USB interface for system upgrade
9 Lamp panel SOC and status display panel
10 Power button Starting up


Battery Module ARK 2.5L-A1
Nominal Capacity/Energy 50Ah/2.56kWh
Rated Capacity/Energy 45Ah/2.3 kWh
Rated Voltage 51.2V
Operating Voltage 47.2 - 56.8V
Rated Charging/discharging current 25A
Max Charging/discharging current 48A
Over current protection 49A
Rated Charging/discharging power 1.28kW
Max Charging/discharging power 2.45kW
Battery Type Cobalt Free Lithium Iron Phosphate (LFP)
Operative temperature range -10~50℃
Recommended operating temperature 15℃~30℃
Storage conditions Temperature: - 20°C ~50°C / 7 days
- 20°C ~40°C / 6 months Humidity:5%~95%RH
Within six months after initial charge
Cooling Natural cooling
Dimension (W/D/H) 650/260/185mm
Weight 28kg
Installation Wall-mounted installation/floor standing installation
Ingress protection IP 65
Cell safety certification IEC62619/UL1642
PACK safety certification IEC62619/IEC62040/CE/Rohs/RCM/CEC
UN transportation test standard UN38.3
Communication port CAN/RS485(Optional)
Battery designation IFpP/41/150/102/ [1P16S]M/-10+50/ 90
Model # ARK2.5L-A1
Brand Growatt
Shipping Weight 28.0000kg
Shipping Width 0.650m
Shipping Height 0.185m
Shipping Length 0.260m
Shipping Cubic 0.031265000m3

Be The First To Review This Product!

Help other Outback Marine Australia Pty Ltd users shop smarter by writing reviews for products you have purchased.

Write a product review