Description
Heavy structural stability for multi-brick vertical columns.
EcoFlow EF BD-B-S1 is the heavy-duty floor pedestal base and leveling stand that provides the structural foundation and moisture isolation for 1 to 3 stacked EcoFlow PowerOcean 5.1 kWh battery packs.
Engineered Foundation for Up to 3 Battery Packs
Safely supports vertical stacking of up to 3 EF BD-5.1-S1 modules (over 180 kg) in a single compact floor column.
Adjustable Precision Leveling Feet
Compensates for uneven basement, utility room, or garage concrete flooring to ensure perfect vertical stack alignment.
Moisture & Flood Elevation
Raises the bottom battery module safely off ground level to protect against floor condensation and standing water.
Integrated Seismic & Wall-Lock Bracing
Heavy-duty mechanical anchor points provide solid structural stabilization against domestic vibration or ground movement.
More product details
Vertical battery towers concentrate heavy loads on a small footprint. The EF BD-B-S1 features heavy-gauge steel construction and adjustable corner leveling feet.
- Four independent leveling feet compensate for uneven concrete floors up to 25 mm variance.
- Ensures vertical busbars mate with perfect alignment and zero pin shear stress.
- Heavy-duty steel brackets anchor the base securely to the floor.
EcoFlow PowerOcean
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Isolating lithium cells from ground moisture and standing water.
Placing battery modules directly on damp basement floors accelerates corrosion and risks electrical shorts during minor water leaks. Elevates the bottom battery pack 80 mm above the floor slab, avoiding moisture transfer. Weatherproof sealed design matches the IP65 rating of PowerOcean battery modules. Powder-coated finish resists salt spray, oil spills, and domestic cleaning chemicals (-25 to +60 °C).
Keeps one base per stack
Pack count changes. The tray does not. A second stack needs a second EF BD-B-S1.
Fits a 680 mm face
Width and depth stay 680 x 183 mm at one, two or three packs. Height is the only number that moves.
Pairs with the three-phase junction
HD-P3 stacks add one EF BD-JC-S1 on top of this same base. HD-P1 stacks skip that box.
Technical data
Providing structural stability, precision leveling, and ground moisture protection for high-voltage storage.
Engineered floor-mounting base and leveling pedestal for PowerOcean battery stacks.
Providing the stable structural foundation for EcoFlow PowerOcean high-voltage battery stacks, the EF BD-B-S1 base isolates battery modules from floor moisture and uneven surfaces. It supports vertical columns of 1 to 3 battery bricks (up to 15.3 kWh and 180+ kg) with adjustable leveling feet and full IP65 environmental sealing.
- Max. Load Capacity
- 180+ kg
- Precision Alignment
- Leveling Feet
- Elevated Stand
- Moisture Isolation
- All-Weather Build
- IP65
Battery / Storage
- 1 pack
- EF BD-5.1-S1 x 1 + EF BD-B-S1 x 1 -> 5.1 kWh nominal
- 2 packs
- EF BD-5.1-S1 x 2 + EF BD-B-S1 x 1 -> 10.2 kWh nominal
- 3 packs
- EF BD-5.1-S1 x 3 + EF BD-B-S1 x 1 -> 15.3 kWh nominal
- 1 pack, W x D x H (mm)
- 680 x 183 x 452 (+/-1)
- 1 pack, weight (kg)
- 59.2
- 2 packs, W x D x H (mm)
- 680 x 183 x 849 (+/-1)
- 2 packs, weight (kg)
- 114.7
- 3 packs, W x D x H (mm)
- 680 x 183 x 1245 (+/-1)
- 3 packs, weight (kg)
- 170.2
Physical & Environmental
- 1 pack, W x D x H (mm)
- 680 x 183 x 452 (+/-1)
- 1 pack, weight (kg)
- 59.2
- 2 packs, W x D x H (mm)
- 680 x 183 x 849 (+/-1)
- 2 packs, weight (kg)
- 114.7
- 3 packs, W x D x H (mm)
- 680 x 183 x 1245 (+/-1)
- 3 packs, weight (kg)
- 170.2
- Installation
- Floor stand / wall mounting
- Protection level
- IP65
- Operating temperature (C)
- -20 to 50
Project fit
Where this model fits.
Scenarios that show which projects the EcoFlow EF BD-B-S1 belongs in, what to verify before quoting, and when another model is the better pick.
Mandatory Base for Any EcoFlow PowerOcean G1 Battery Column (5.1–15.3 kWh)
Mandatory foundation unit whenever configuring a new PowerOcean battery column with 1, 2, or 3 battery modules.
One EF BD-B-S1 base is required per vertical battery tower.
- Confirm this model against the adjacent rating in the same family
Documents
EcoFlow PowerOcean Single-phase datasheet (EU, EN)Product questions
Can a single base support more than 3 battery modules?
No. Maximum 3 modules (15.3 kWh) per single tower. For structural balance and seismic safety, each PowerOcean column is limited to 3 battery modules (15.3 kWh) on a single base. To expand capacity to 30.6 kWh or 45.9 kWh, install a second or third base and connect the towers using the EF-BD-JC-S1 Junction Box.
System components
Recommended components
EF BD-5.1-S1 5.1 kWh LFP battery pack
Item number: DLK-ECOFLOW-EFBD51S1
The building-block pack for every PowerOcean stack, single- or three-phase; both HD-P1 and HD-P3 systems scale storage in 5.1 kWh steps of this same pack.
EF BD-B-S1 battery stack base unit
Item number: DLK-ECOFLOW-EFBDBS1
EcoFlow's own stack table lists EF BD-B-S1 x1 in every single-phase configuration (with EF HD-P1), the base unit any HD-P1 battery stack is built on.
EF BD-JC-S1 junction pack
Item number: DLK-ECOFLOW-EFBDJCS1
EcoFlow's own stack table lists EF BD-JC-S1 x1 in every three-phase configuration (with EF HD-P3), the junction pack any HD-P3 battery stack is built on.
Approved pairings
EcoFlow EF HD-P1-3.68K-S1Item number DLK-ECOFLOW-EFHDP1368KS1Single-phase: EF BD-5.1-S1 x N plus one EF BD-B-S1 base. Three-phase: the same, plus one EF BD-JC-S1 junction pack, which the single-phase system does not use. Order the JC pack with every three-phase system. Max 45 kWh single-phase, 45.9 kWh three-phase.
EcoFlow EF HD-P1-3K-S1Item number DLK-ECOFLOW-EFHDP13KS1Single-phase: EF BD-5.1-S1 x N plus one EF BD-B-S1 base. Three-phase: the same, plus one EF BD-JC-S1 junction pack, which the single-phase system does not use. Order the JC pack with every three-phase system. Max 45 kWh single-phase, 45.9 kWh three-phase.
EcoFlow EF HD-P1-4.6K-S1Item number DLK-ECOFLOW-EFHDP146KS1Single-phase: EF BD-5.1-S1 x N plus one EF BD-B-S1 base. Three-phase: the same, plus one EF BD-JC-S1 junction pack, which the single-phase system does not use. Order the JC pack with every three-phase system. Max 45 kWh single-phase, 45.9 kWh three-phase.
EcoFlow EF HD-P1-5K-S1Item number DLK-ECOFLOW-EFHDP15KS1Single-phase: EF BD-5.1-S1 x N plus one EF BD-B-S1 base. Three-phase: the same, plus one EF BD-JC-S1 junction pack, which the single-phase system does not use. Order the JC pack with every three-phase system. Max 45 kWh single-phase, 45.9 kWh three-phase.
EcoFlow EF HD-P1-6K-S1Item number DLK-ECOFLOW-EFHDP16KS1Single-phase: EF BD-5.1-S1 x N plus one EF BD-B-S1 base. Three-phase: the same, plus one EF BD-JC-S1 junction pack, which the single-phase system does not use. Order the JC pack with every three-phase system. Max 45 kWh single-phase, 45.9 kWh three-phase.
EcoFlow EF HD-P3-10K-S1Item number DLK-ECOFLOW-EFHDP310KS1Single-phase: EF BD-5.1-S1 x N plus one EF BD-B-S1 base. Three-phase: the same, plus one EF BD-JC-S1 junction pack, which the single-phase system does not use. Order the JC pack with every three-phase system. Max 45 kWh single-phase, 45.9 kWh three-phase.
EcoFlow EF HD-P3-12K-S1Item number DLK-ECOFLOW-EFHDP312KS1Single-phase: EF BD-5.1-S1 x N plus one EF BD-B-S1 base. Three-phase: the same, plus one EF BD-JC-S1 junction pack, which the single-phase system does not use. Order the JC pack with every three-phase system. Max 45 kWh single-phase, 45.9 kWh three-phase.
EcoFlow EF HD-P3-6K0-S1Item number DLK-ECOFLOW-EFHDP36K0S1Single-phase: EF BD-5.1-S1 x N plus one EF BD-B-S1 base. Three-phase: the same, plus one EF BD-JC-S1 junction pack, which the single-phase system does not use. Order the JC pack with every three-phase system. Max 45 kWh single-phase, 45.9 kWh three-phase.
EcoFlow EF HD-P3-8K0-S1Item number DLK-ECOFLOW-EFHDP38K0S1Single-phase: EF BD-5.1-S1 x N plus one EF BD-B-S1 base. Three-phase: the same, plus one EF BD-JC-S1 junction pack, which the single-phase system does not use. Order the JC pack with every three-phase system. Max 45 kWh single-phase, 45.9 kWh three-phase.