Fortress Power eBoost 16kWh LFP Battery

The Fortress Power eBoost 16 kWh is a high-capacity, weatherproof LFP battery module for residential and light-commercial ESS.

It delivers 16 kWh usable energy per unit, scales to large systems with parallel stacking, and integrates cleanly with the Fortress Envy series via the eWay wireway (built-in 750 A busbar). Internal heating, IP65 construction, and lockable wheels make the eBoost ready for harsh climates and fast installs.

You will need one eBoost eWay for each initial eBoost and an eBoost eWay Lite for each unit added in parallel. 

What is the difference between an eWay and eWay Lite? 

eWay: Three terminal 750A busbar. Used for paralleling multiple batteries. Includes Din rail bracket to mount the Guardian* (optional).

eWay Lite: One 250A Battery Terminal. Does not include din rail bracket to mount the Guardian*. (optional)

Key Benefits

Large Usable Capacity:

16 kWh per cabinet for high-load homes or space-constrained installs.

Scalable Architecture:

Parallel up to 16 units; 32 kWh variant available for bigger builds (up to 512 kWh per site).

All-Weather Ready:

IP65 enclosure with internal heating elements for reliable cold-climate performance.

Clean BOS Integration:

eWay wireway with built-in 750 A busbar, conduit ports, and LED indicators streamlines wiring.

Service & Safety:

Lockable wheels for positioning and an integrated emergency shutoff for safe maintenance.

Special Technology

Tier-1 LFP Pack:

Prismatic 16-cell LFP chemistry with long cycle life and robust thermal stability.

Closed-Loop Control:

CAN/RS485 communications enable coordinated charge/discharge with Envy inverters.

High Surge Output:

Up to 18 kW discharge for 10 seconds to start demanding loads.

Warranty

10-Year Manufacturer Warranty

(up to 15 years when paired with Fortress inverter/platform).

Best Uses

Whole-Home Backup & TOU Shifting:

Seamless PV + storage operation with Envy Duo 21 or Envy 8/10/12 kW.

Scalable Microgrids:

Stack multiple cabinets for large residences, small businesses, or estates