EcoFlow OCEAN 2 Battery 8.0 kWh (EF BD-8-S2)
The larger 8 kWh module of the OCEAN 2 LFP battery platform — same tower format and stack rules as the 5 kWh pack, reaching 48 kWh per 6-module tower.
- 8 kWh per module — higher capacity per stacking step than the 5 kWh pack (48 kWh per 6-module tower)
- Same official stack rules: 6 per floor stack, 3 wall-mounted, up to 12 modules per OCEAN 2 inverter
- OCEAN 2 LFP platform: 10,000+ cell cycles claim, 15-year warranty per EcoFlow warranty policy
- New 2026 module — availability, lead time and datasheet revision confirmed with your quote
- LFP
- Cell chemistry
- Manufacturer
- EcoFlow
- Model code
- EF BD-8-S2
- Item no.
- DLK-ECOFLOW-EFBD8S2
- Delivery
- Delivery included in your Proforma
Plan with EF BD-8-S2
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
Modules that scale with the project
5 and 8 kWh LFP packs stack to 60 kWh per inverter; cross-compatible with gen-1 PowerOcean packs.
Official 8 kWh member of the OCEAN 2 battery platform
EcoFlow's Battery Stack Bridge installation guide (June 2026) formally lists the 'EcoFlow OCEAN 2 LFP Battery 8kWh (EF BD-8-S2)' alongside the 5 kWh BD-5-S2 and the gen-1 PowerOcean pack — same base, same stacking hardware, same bridge brackets for dual-tower installs.
Inspect it before you spec it.
Official renders, installation photos and system panels for this model line.
Official manufacturer product render
Specifications
Every value exactly as published in the official EF BD-8-S2 documentation.
Complete the system
Balance-of-system and accessories paired with this model. Every pairing follows the manufacturer's official compatibility list.
EcoFlow OCEAN 2 hybrid inverter (e.g. HD-P3-10K0-S2)
EcoFlow OCEAN 2 LFP Battery Base
- [1]EcoFlow OCEAN 2 hybrid inverter (e.g. HD-P3-10K0-S2)
- [2]EcoFlow OCEAN 2 LFP Battery Base
EcoFlow Battery Stack Bridge
- [1]EcoFlow Battery Stack Bridge
EcoFlow Battery Junction Box
EcoFlow PowerOcean LFP Battery 5.1 kWh (BD-5.1-S1, gen 1)
- [1]EcoFlow Battery Junction Box
- [2]EcoFlow PowerOcean LFP Battery 5.1 kWh (BD-5.1-S1, gen 1)
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 OCEAN 2 HD-P1-10K0-S2 (10 kW single-phase hybrid, 2026 flagship)
Item no. DLK-ECOFLOW-EFHDP110K0S2 On EcoFlow's compatibility list | 1-12 modules
EcoFlow OCEAN 2 HD-P1-12K0-S2 (12 kW single-phase hybrid, 2026 flagship)
Item no. DLK-ECOFLOW-EFHDP112K0S2 On EcoFlow's compatibility list | 1-12 modules
EcoFlow OCEAN 2 HD-P1-6K0-S2 (6 kW single-phase hybrid, 2026 flagship)
Item no. DLK-ECOFLOW-EFHDP16K0S2 On EcoFlow's compatibility list | 1-12 modules
EcoFlow OCEAN 2 HD-P1-8K0-S2 (8 kW single-phase hybrid, 2026 flagship)
Item no. DLK-ECOFLOW-EFHDP18K0S2 On EcoFlow's compatibility list | 1-12 modules
EcoFlow OCEAN 2 HD-P3-10K0-S2 (10 kW three-phase hybrid, 2026 flagship)
Item no. DLK-ECOFLOW-EFHDP310K0S2 On EcoFlow's compatibility list | 1-12 modules
EcoFlow OCEAN 2 HD-P3-12K0-S2 (12 kW three-phase hybrid, 2026 flagship)
Item no. DLK-ECOFLOW-EFHDP312K0S2 On EcoFlow's compatibility list | 1-12 modules
EcoFlow OCEAN 2 HD-P3-6K0-S2 (6 kW three-phase hybrid, 2026 flagship)
Item no. DLK-ECOFLOW-EFHDP36K0S2 On EcoFlow's compatibility list | 1-12 modules
EcoFlow OCEAN 2 HD-P3-8K0-S2 (8 kW three-phase hybrid, 2026 flagship)
Item no. DLK-ECOFLOW-EFHDP38K0S2 On EcoFlow's compatibility list | 1-12 modules
Pick the rating
EcoFlow OCEAN 2 (LFP Battery) family. Same engineering, different size.
Every figure comes straight from the manufacturer's official datasheet.
Availability & compliance 2
The EF BD-8-S2 is officially part of the OCEAN 2 line, EcoFlow’s Battery Stack Bridge installation guide (June 2026) and the July 2026 battery/inverter compatibility matrix both list “OCEAN 2 LFP Battery 8kWh (EF BD-8-S2)” with full stack rules (6 per floor stack, 12 per OCEAN 2 three-phase inverter).
A standalone public datasheet with capacity/power/weight details had not been published at the time of writing, so we quote detailed electrical figures per project against the then-current EcoFlow documentation. Request a quote and we confirm availability, lead time and the datasheet revision for your filing.
- Battery safety: IEC/EN 62619 (safety of industrial lithium cells/batteries), IEC/EN 62040-1, IEC/EN 62477-1, ISO 13849-1 and VDE-AR-E 2510-50 (the German application rule for stationary lithium storage)
- Other: CE-marked, ships under UN 38.3 and meets EMC series EN 61000-6-1/-2/-3/-4
Grid-code compliance (VDE-AR-N 4105 / EN 50549 in Germany) sits with the OCEAN 2 hybrid inverter the battery operates behind, the battery itself must only be operated with EcoFlow hybrid inverters per the manual. EcoFlow also states its products meet the German BattG battery-law requirements for disposal/return.
Configuration 2
Same tower format and stack rules, bigger step per module.
- 8 kWh modules: a 6-module tower reaches 48 kWh nominal
- 5 kWh modules: top out at 30.12 kWh for the same tower
- Full system: the 12-module limit on an OCEAN 2 three-phase inverter goes materially beyond the 60 kWh the 5 kWh line is marketed at
Fewer modules, less stacking height per kWh, for heat-pump households, larger roofs, or C&I-adjacent residential projects, the 8 kWh module reduces part count. Both module sizes must not be mixed within one bridged pair (bridged units must be identical models); confirm mixed-size stack rules with EcoFlow documentation per project.
Modules stack wire-free via click-on terminals on the OCEAN 2 battery base.
- Single tower: up to 6 per floor-standing tower (3 wall-mounted)
- Multiple towers: parallel via junction boxes, up to 3 in parallel, connect cascaded stacks
- Inverter limit: up to 12 modules on one OCEAN 2 three-phase or OCEAN 2 Plus inverter
- Hybrid stacking: officially supported with previous-generation PowerOcean LFP packs, capped at 4 modules per stack in mixed use, so existing gen-1 installs can be expanded rather than replaced
EcoFlow’s caveat: for more than 4 packs in one stack, verify local regulations and that the installed firmware supports 6-pack stacks. Failed modules are isolated automatically so the rest of the stack keeps operating.
Operation & warranty 1
Warranty
EcoFlow grants 15 years on the battery (pv magazine Deutschland; capacity-retention terms follow EcoFlow’s warranty policy, request the document for exact figures).
Storage and handling
- Storage: -25 °C to +60 °C, 0-35 °C recommended, in original packaging
- Long-term storage: keep at ~60% state of charge and cycle 30%→60% every three months
- Transport: never rail- or air-freight the modules
- Commissioning: power the system on promptly after installation to avoid capacity loss
Charge/discharge power derates above 40 °C ambient and below 0 °C; a built-in heater conditions the pack in cold weather.
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