SAJ EK90 BU5-9.0-TV battery pack (9 kWh, 314 Ah LFP)
Stackable 9 kWh high-voltage LFP battery pack for the SAJ EK90 HS5 generation: 314 Ah cells, 100% depth of discharge and a built-in DC-DC optimizer per pack, joining the stack blind-mate with no inter-module cabling.
- 9 kWh total = 9 kWh usable (100% DoD) on 314 Ah LFP cells
- Built-in DC-DC optimizer: independent charge/discharge per pack, 4600 W max per pack
- Blind-mate stacking — up to 6 packs (6–54 kWh) per EK90 HS5 system, single- or three-phase
- 9 kWh
- Usable energy
- Manufacturer
- SAJ
- Model code
- EK90 BU5-9.0-TV
- Item no.
- DLK-SAJ-EK90-BU5-9-0-TV
- Delivery
- Germany delivery estimate: EUR 85–205 · The final delivery charge is included in your Proforma.
Plan with EK90 BU5-9.0-TV
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.
9 kWh / 9 kWh (100% depth of discharge) per stack today; add modules when the load grows instead of guessing on day one.
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 EK90 BU5-9.0-TV documentation.
Configuration 3
Yes, within the EK90 BU5 family: because every pack has its own DC-DC optimizer with fully independent charge/discharge, SAJ's design explicitly supports seamless capacity expansion without the stack degrading to the weakest module — the published system ladder (6 to 54 kWh in steps like 12/13/15/16 kWh etc.) is built from combinations of the 6/7/9 kWh packs. Verify the exact combination against SAJ's battery-combination datasheet before ordering, and note these are EK90-generation packs — they do not retrofit older SAJ HS2/HS3/B2 systems.
Up to 6 packs per EK90 HS5 system, stacked blind-mate on a BE5-TV battery base (or wall-mounted via the BT5-TV bracket) with no inter-module cabling — the electrical and communication connections mate automatically as the pack seats. That takes a capacity extension from a wiring job to a lifting job; observe the pack weight when planning the lift.
Usable equals total — 100% depth of discharge per SAJ's manual. This pack stores 9 kWh and can charge/discharge at up to 4600 W (11.8 A) on its own optimizer; a stack's total power scales with the number of packs, capped by the inverter's battery interface. Cycle life is rated 10,000 cycles in the manual (12,000 in SAJ's lab-condition marketing figure).
Availability & compliance 1
SAJ headlines UL 9540A & UL 9540B battery-safety testing for the EK90 system and lists the 5-layer pack protection: V2 flame-retardant material, full-coverage temperature sensing, thermal insulation board, thermal aerosol fire suppression and a decompression valve. The batteries pass UN38.3 for transport as dangerous goods — use a qualified carrier and keep the original packaging for any return shipment.
Operation & warranty 1
SAJ's EK90 documents state 'refer to the warranty policy' — no capacity-retention percentage is published for this model, and SAJ's HS5 marketing carries a 15-year warranty headline at system level. Request the current SAJ warranty document with your quote and quote its exact terms; note the warranty position of packs added later to an existing stack should be confirmed with SAJ at the time of expansion.
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