EcoFlow EF BD-B-S1
EcoFlow PowerOcean EF BD-B-S1 is the battery base of the PowerOcean residential stack.
- 3 kW to 6 kW single-phase (EF HD-P1) and 6 kW to 12 kW three-phase (EF HD-P3) inverters cover residential through small-commercial loads on the same PowerOcean platform.
- Battery capacity builds in 5.1 kWh EF BD-5.1-S1 packs: up to 15.3 kWh on a single HD-P1 inverter (cascadable to about 45 kWh across three HD-P1 units), or up to 45.9 kWh directly on a single HD-P3 three-phase inverter.
- IP65-rated inverters and battery stacks are specified for -20 to 50 degrees C, so they can sit outdoors or in an unheated plant room.
- Built-in RS485, CAN, Wi-Fi, Bluetooth and 4G give direct EcoFlow app monitoring without extra gateway hardware.
- Manufacturer
- EcoFlow
- Model code
- PowerOcean LFP Battery Base
- Item no.
- DLK-ECOFLOW-EFBDBS1
- Delivery
- Delivery to Germany · EUR 14.90 at checkout
Plan with PowerOcean LFP Battery Base
New system, extension or replacement? Linker Advisor starts from this article and asks only for what is still open — existing model, quantity, postcode, installation date.
Figures transcribed from the manufacturer datasheet on file. Confirm your grid code and configuration with our engineers before ordering.
- GoodWe · SAJ · Pylontech · EcoFlow · Chint paired from the maker’s own lists
- Datasheets on file for every item
- Within 24 h engineering response
- MOQ 1 unit · EU delivery
- Engineering-checked configurations
Size it to the load. Grow it later.
Modular stacks scale with the project instead of forcing a day-one guess.
Role
One EF BD-B-S1 per PowerOcean battery stack, regardless of how many packs sit on it.
Inspect it before you spec it.
Official renders, installation photos and system panels for this model line.
Manufacturer imagery from EcoFlow's official documentation.
EcoFlow PowerOcean LFP battery pack, official render
EcoFlow PowerOcean system at a residence, official EcoFlow brochure render
Installer photograph, eye-gated 2026-07-11.
Specifications
Every value exactly as published in the official PowerOcean LFP Battery Base documentation.
Documents
Complete the system
Balance-of-system and accessories paired with this model. Every pairing follows the manufacturer's official compatibility list.
EF BD-5.1-S1 5.1 kWh LFP battery pack
EF BD-B-S1 battery stack base unit
EF BD-JC-S1 junction pack
- [1]EF BD-5.1-S1 5.1 kWh LFP battery pack
- [2]EF BD-B-S1 battery stack base unit
- [3]EF BD-JC-S1 junction pack
What this unit is approved to run with.
Every pairing below traces to a manufacturer compatibility list, by document version and date. A pairing only one maker lists is marked; we quote it, an engineer confirms it.
EcoFlow EF HD-P1-3.68K-S1
Item no. DLK-ECOFLOW-EFHDP1368KS1 On EcoFlow's compatibility list
EcoFlow EF HD-P1-3K-S1
Item no. DLK-ECOFLOW-EFHDP13KS1 On EcoFlow's compatibility list
EcoFlow EF HD-P1-4.6K-S1
Item no. DLK-ECOFLOW-EFHDP146KS1 On EcoFlow's compatibility list
EcoFlow EF HD-P1-5K-S1
Item no. DLK-ECOFLOW-EFHDP15KS1 On EcoFlow's compatibility list
EcoFlow EF HD-P1-6K-S1
Item no. DLK-ECOFLOW-EFHDP16KS1 On EcoFlow's compatibility list
EcoFlow EF HD-P3-10K-S1
Item no. DLK-ECOFLOW-EFHDP310KS1 On EcoFlow's compatibility list
EcoFlow EF HD-P3-12K-S1
Item no. DLK-ECOFLOW-EFHDP312KS1 On EcoFlow's compatibility list
EcoFlow EF HD-P3-6K0-S1
Item no. DLK-ECOFLOW-EFHDP36K0S1 On EcoFlow's compatibility list
Pick the rating
EcoFlow PowerOcean family. Same engineering, different size.
Every figure comes straight from the manufacturer's official datasheet.
Configuration 2
One per stack, whatever the pack count.
- Stack table: EcoFlow lists EF BD-B-S1 x 1 in every single-phase configuration: 1, 2 or 3 EF BD-5.1-S1 packs give 5.1, 10.2 or 15.3 kWh nominal on one base.
- Multiple stacks: each additional stack needs its own base, so order bases 1:1 with stacks, not with packs.
- Three-phase systems: HD-P3 stacks use this same base and add one EF BD-JC-S1 junction box per stack.
Yes. The base count does not change with pack count, so a stack started with one pack keeps its base when packs two and three are added.
- Growth path: 5.1 to 10.2 to 15.3 kWh nominal on the same base, in 5.1 kWh pack steps.
- Clearance: the assembled stack grows from 452 mm to 849 mm to 1245 mm high, so verify space above the stack before planning an extension.
- Beyond three packs: more capacity means a further stack, and each new stack needs its own base.
Availability & compliance 1
Ordered separately. The EF BD-5.1-S1 battery pack does not include the base; every stack needs one EF BD-B-S1 on the bill of materials.
- BOM rule: packs x 1 to 3 plus base x 1 per stack; add one EF BD-JC-S1 junction box per stack only on three-phase HD-P3 systems.
- Rating: the assembled stack carries IP65 and -20 to 50 C, so the base does not restrict siting.
- Quoting: state pack count and phase configuration with your inquiry so base and junction hardware land on the quote in the right quantities.
Installation & wiring 1
The base sets the stack footprint at 680 x 183 mm; height and weight grow with pack count.
- 1 pack: 680 x 183 x 452 mm, 59.2 kg.
- 2 packs: 680 x 183 x 849 mm, 114.7 kg.
- 3 packs: 680 x 183 x 1245 mm, 170.2 kg.
- Siting: floor stand or wall mounting, IP65 rating and -20 to 50 C operating range; check floor loading for a full three-pack stack.
Send the project. Hear from an engineer within 24 hours.
Loads, tariff, site constraints - our engineers reply with a compatibility check and a sizing recommendation.
Contact project supportOr write to linker01@de-linker.com — attach your load profile if you have one.