SAJ B2-5.0-HV1
SAJ B2-5.0-HV1 is the 5 kWh high-voltage module of the B2 Series: 4.8 kWh usable LiFePO4 capacity, stackable to 25 kWh per tower.
- 96% depth of discharge on every B2/BU2 module size, 5.0 to 25.0 kWh nominal per stack.
- Stack 1 to 5 BU2 modules behind one BC2-HV1 control unit for up to 25.0 kWh on H2/HS2, or up to 8 BU3 modules for up to 40 kWh on HS3.
- IP65-rated enclosure for wall- or ground-mounted outdoor installation.
- CAN communication to the host inverter, natural convection cooling — no active thermal management to maintain.
- 4.8 kWh
- Usable energy
- 5.0 kWh
- Nominal energy
- 102.4 V
- Nominal voltage
- 30 A
- Max. charge current
- Manufacturer
- SAJ
- Model code
- B2-5.0-HV1
- Item no.
- DLK-SAJ-B250HV1
- Delivery
- Germany delivery estimate: EUR 85–205 · The final delivery charge is included in your Proforma.
Plan with B2-5.0-HV1
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.
Capacity building block
5.0 kWh per unit. Sizing scales with the bank, not with a bigger box.
Inspect it before you spec it.
Official renders, installation photos and system panels for this model line.
SAJ B2-5.0-HV1 front view
SAJ B2-5.0-HV1 angle view
SAJ B2-5.0-HV1 on a commissioned system
SAJ B2-5.0-HV1 in a real installation context
Specifications
Every value exactly as published in the official B2-5.0-HV1 documentation.
Documents
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.
SAJ CH3-100K-T8
Item no. DLK-SAJ-CH3100KT8 On SAJ's compatibility list
SAJ CH3-110K-T8
Item no. DLK-SAJ-CH3110KT8 On SAJ's compatibility list
SAJ CH3-125K-T8
Item no. DLK-SAJ-CH3125KT8 On SAJ's compatibility list
SAJ CH3-75K-T6
Item no. DLK-SAJ-CH375KT6 On SAJ's compatibility list
SAJ CH3-80K-T6
Item no. DLK-SAJ-CH380KT6 On SAJ's compatibility list
SAJ CH3-99.9K-T8
Item no. DLK-SAJ-CH3999KT8 On SAJ's compatibility list
SAJ H2-15K-T3
Item no. DLK-SAJ-H215KT3 On SAJ's compatibility list
SAJ H2-20K-T3
Item no. DLK-SAJ-H220KT3 On SAJ's compatibility list
Pick the rating
SAJ family. Same engineering, different size.
Every figure comes straight from the manufacturer's official datasheet.
Configuration 3
Every tier is built from the same two blocks: BU2-5.0-HV1 battery modules (32S1P, 102.4 V / 50 Ah, LiFePO4) stacked with one BC2-HV1 control module. The model number states the rated energy.
- B2-5.0-HV1: 1 module, 5.0 kWh rated, 4.8 kWh usable.
- B2-10.0-HV1: 2 modules, 10.0 kWh rated, 9.6 kWh usable, 6144 W rated power.
- B2-15.0-HV1: 3 modules, 15.0 kWh rated, 14.4 kWh usable, 9216 W.
- B2-20.0-HV1: 4 modules, 20.0 kWh rated, 19.2 kWh usable, 12288 W.
- B2-25.0-HV1: 5 modules, 25.0 kWh rated, 24.0 kWh usable, 15360 W.
Yes. The stack design runs from one to five BU2-5.0-HV1 modules behind the same BC2-HV1 control unit, so a 5.0 kWh install can grow to 25.0 kWh rated.
- Voltage rises with count: nominal voltage goes from 204.8 V at 2 modules to 512 V at 5, so re-check the host inverter's battery voltage window after every expansion step.
- Power rises too: per SAJ's table, rated power climbs from 6144 W at 2 modules to 15360 W at 5.
- Same footprint: the tower grows only in height, from 522 mm at 2 modules to 1305 mm at 5, on the same 626 x 365 mm base.
SAJ positions the B2 HV platform as the battery for its H2 and HS2 hybrid inverters, connected over CAN.
- Voltage match: the operating window spans 89.6 to 115.2 V with one module up to 448 to 576.0 V with five; confirm it sits inside the inverter's battery input range before final sizing.
- HS3 exception: the BU3-5.0-TV2-PRO module carried in this family uses the same LiFePO4 chemistry but pairs only with HS3, not with H2 or HS2.
- HV5 sibling: SAJ's datasheet also lists B2 HV5 tiers on the BU2-5.0-HV5 module at identical energy ratings; confirm availability before planning around HV5.
Installation & wiring 1
Yes. The enclosure is IP65-rated, protection class I, for wall-mounted or ground-mounted installation.
- Weight planning: the module stack weighs 101 kg at 2 modules up to 252.5 kg at 5, plus 11 kg for the control module; plan lifting and anchoring accordingly.
- Cooling: natural convection, so there are no fans to wire or maintain.
- Communication: a single CAN link to the host inverter.
- Ambient: 0 to 95% non-condensing humidity.
Operation & warranty 1
SAJ rates every tier at 30 A maximum charge and discharge current with 96% usable depth of discharge.
- Temperature: charging is specified from 0 to 50 C, discharging from -10 to 50 C.
- Usable energy: 96% of rated on every tier, for example 24.0 of 25.0 kWh on the five-module stack.
- Firmware: remote upgrade is supported.
- Warranty: SAJ's datasheet refers to the warranty card rather than printing a term, so ask for the current warranty document with your quote.
Availability & compliance 1
SAJ's datasheet lists battery safety, EMC and transport standards for the series.
- Safety: IEC 62619 (cell and pack) and EN 62477-1.
- EMC: EN 61000-6-1/2/3/4.
- Transport: UN38.3.
- Registration paperwork: the battery datasheet does not carry a grid-code certificate list of its own, so confirm the exact certificate set your network operator needs together with the quote.
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