The Growatt ARK battery system has a modular design. Extra batteries can be stacked on top of eachother. The ARK-2.5H-A1 is suited for high voltage systems. The lithium iron phosphate battery (LFP) is free of cobalt, for example resulting in a less costly battery. The battery has a cycle life of over 6000.

The battery has a protection rating of IP65 and can be attached to a wall as well as placed on the floor. Install on a floor requires a separate pedestal. The battery is 65cm wide, 26cm deep, 18cm high and weighs 30kgs.

Lithium iron phosphate battery

Some advantages of this type of battery compared to leadacid and other batteries are: a longer cycle life, little to no maintenance, extremely safe, relatively lightweight and an improved charge and discharge efficiency.