The Growatt ML33RTA is a 3.3kWh low-voltage lithium battery module built on safe, long-lasting LiFePO4 (lithium iron phosphate) technology. Compact and easy to install, it is designed for residential energy storage and can be expanded in parallel to build larger systems alongside Growatt's solar and storage inverters.
- 3.3kWh nominal energy (3kWh usable)
- Cobalt-free LiFePO4 chemistry for safety and longevity
- Nominal voltage 51.2V (operating range 48-57.6V)
The ML33RTA is a modular building block for Growatt's low-voltage residential storage systems, allowing capacity to be scaled simply by adding modules - up to six packs for a total of 19.8kWh. As an expandable module rather than a standalone unit, it is ideal for adding storage to a new system or growing an existing one for greater solar self-consumption and backup capability.
