ROCKSOLAR High Voltage Battery | 40.96–61.44kWh LiFePO4 Battery (DC UL9540 Certified)

High voltage battery storage for solar energy and backup power

With five sizes from 40.96 to 61.44kWh and DC 409V to 614V, this modular lithium battery system suits businesses and larger solar projects that need more storage than a small backup battery can provide. The battery alone has DC UL 9540 certificate so you do not need to worry to pair with a particular model inverter to meet UL9540 requirements.

Built for daily use, with room for larger projects

• Plan for more storage as your needs grow: the manufacturer supports up to 32 systems connected in parallel for larger installations. ROCKSOLAR can help check the approved configuration and inverter requirements.
• Designed for easier installation and maintenance: standard 19-inch rack modules let installers work with individual battery modules within the system.
• Built for repeated charging: the datasheet states 6,500 cycles, backed by a manufacturer-stated 10-year warranty. Actual service life depends on operating conditions and the warranty terms.
• Protection working in the background: the built-in battery management system monitors charging, discharging, current and temperature to help protect the battery during use.
• Flexible ways to use stored energy: suitable system designs can support solar self-consumption, emergency backup, off-grid power, and commercial or industrial energy management.

What can this battery do for your property?

For solar energy storage: keep some of the electricity your panels generate instead of sending it all to the grid. Your system can then use stored energy later, depending on how your installer configures it.

For power outages: create a backup plan for the equipment you want to keep running. Backup operation requires a suitable inverter and the correct electrical installation; the battery alone does not provide power to your building.

For business energy management: schedule stored energy for times when demand or electricity rates are higher, where your electricity plan and system design make this worthwhile.

Battery sizes and basic specifications

All five configurations use LiFePO4 battery chemistry and have a rated capacity of 100Ah.

Capacity figures are nominal. The selected inverter's battery input must support the chosen configuration's operating voltage range. Confirm the exact supplied model's voltage limits before installation.

Why DC UL 9540 certification matters to you

You will have the freedom of choice to choose the most popular inverters when planning your system. 

Common questions

Will it work with my existing solar system?
Only if your system uses a compatible high-voltage battery inverter. Share your inverter's make and model with ROCKSOLAR before ordering. Standard 12V, 24V and 48V battery inverters are not compatible with this battery system.

Can I install it outdoors?
This is the indoor version. It needs a dry, protected installation location. It is not weatherproof.

How long will it power my equipment?
That depends on the battery size, the equipment's electricity use and the system settings. Send us your equipment list and desired backup time for help with sizing.

Are solar panels and an inverter included?
No. This listing is for battery storage. Solar panels, the inverter and installation are separately sold.

• Shipping: Orders are processed within 1–2 business days. Standard delivery takes 3–7 business days depending on your location.
• Returns: You may return or exchange products within 30 days of receiving your order. Items must be in original condition with proof of purchase.
• If your item is defective or damaged due to manufacturing issues, we’ll gladly replace it at no additional cost.