Batteries with a capacity of 15–29.9 kWh are ideal energy storage solutions for medium and larger solar panel systems. These models are already capable of covering the energy needs of entire households, small businesses, or offices, especially when the goal is to achieve partial or complete energy independence. The 15–29.9 kWh range can cover a significant portion of daily energy consumption, making it an excellent choice for hybrid systems and as a backup power source.

The batteries in this category are based on lithium iron phosphate (LiFePO₄) cell technology, which offers a high cycle life, safe operation, and long service life. Every model features an integrated BMS (Battery Management System) unit, which monitors the condition of the cells and optimizes charging processes. Energy storage units with a capacity of 15–29.9 kWh are mostly modularly expandable, allowing them to be flexibly adapted to increasing energy demands in the future.