SAJ BU3-5.0-TV2-PRO
SAJ BU3-5.0-TV2-PRO is the 5 kWh stackable battery module of the HS3 system.
- 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 kWh
- Nominal energy
- 450 V
- Nominal voltage
- LiFePO4
- Cell chemistry
- Manufacturer
- SAJ
- Model code
- BU3-5.0-TV2-PRO
- Item no.
- DLK-SAJ-BU350TV2PRO
- Delivery
- Germany delivery estimate: EUR 85–205 · The final delivery charge is included in your Proforma.
Plan with BU3-5.0-TV2-PRO
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.
HS3 building block
Up to 8 modules per HS3 system per the datasheet scalability row - 5 to 40 kWh in 5 kWh steps.
Inspect it before you spec it.
Official renders, installation photos and system panels for this model line.
Official manufacturer render.
SAJ HS3 inverter with BU3 battery stack, official render from the SAJ datasheet
Specifications
Every value exactly as published in the official BU3-5.0-TV2-PRO 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 AS3-6K-S (6 kW single-phase AI 6-in-1 all-in-one)
Item no. DLK-SAJ-AS3-6K On SAJ's compatibility list | 1-8 modules
SAJ HS3-10K-T2-W-P
Item no. DLK-SAJ-HS310KT2WP On SAJ's compatibility list | 1-8 modules
SAJ HS3-12K-T2-W-P
Item no. DLK-SAJ-HS312KT2WP On SAJ's compatibility list | 1-8 modules
SAJ HS3-5K-T2-W-P
Item no. DLK-SAJ-HS35KT2WP On SAJ's compatibility list | 1-8 modules
SAJ HS3-6K-T2-W-P
Item no. DLK-SAJ-HS36KT2WP On SAJ's compatibility list | 1-8 modules
SAJ HS3-8K-T2-W-P
Item no. DLK-SAJ-HS38KT2WP On SAJ's compatibility list | 1-8 modules
Pick the rating
SAJ family. Same engineering, different size.
Every figure comes straight from the manufacturer's official datasheet.
Configuration 2
One BC2-HV1 control module plus one to five BU2-5.0-HV battery modules per stack. That gives 5.0 to 25.0 kWh nominal, matching the B2-5.0 through B2-25.0 system labels.
- Control module: exactly one BC2-HV1 per stack, whatever the module count; the SAJ B2 datasheet prints it in both the HV1 and HV5 tables.
- Arithmetic: capacity is module count times 5.0 kWh, so 5 x 5.0 kWh = 25.0 kWh at full height.
- Usable energy: SAJ rates 96 percent depth of discharge on every B2/BU2 module size.
The BU2-5.0-HV modules serve the SAJ H2 and HS2 hybrid inverters. The BU3-5.0-TV2-PRO is the HS3 stack module and pairs only with the HS3 three-phase hybrids (HS3-5K to HS3-12K-T2-W/G-PX); the two module types are not interchangeable.
- HS3 scaling: up to 8 BU3 modules per system per the HS3 datasheet, 8 x 5.0 kWh = 40 kWh maximum.
- H2/HS2 scaling: up to 5 BU2 modules behind one BC2-HV1, 25.0 kWh maximum.
- System voltage: the BU3-based HS3 stack runs 380 to 500 V with up to 30 A charge and discharge, model dependent.
Installation & wiring 1
Both module families carry an IP65 ingress rating. SAJ lists the B2 system as wall-mounted (optional) or ground-mounted, with defined climate limits.
- Temperature: for the B2 system, SAJ permits charging from 0 to 50 C and discharging from -10 to 50 C, at 0 to 95 percent non-condensing humidity.
- Handling: the BC2-HV1 head unit is 220 x 626 x 365 mm at 11 kg; each BU3 module is 420 x 695 x 170 mm at 53.0 kg, so plan the lift accordingly.
- Communication: the stack reports to the host inverter over CAN.
Operation & warranty 1
LiFePO4 cells with 96 percent depth of discharge on every B2/BU2 module size, per SAJ's datasheet.
- Thermal design: natural convection cooling, so there is no fan or active thermal management to maintain.
- Protection: the BC2-HV1 control module is rated for 100 A maximum fault current per the datasheet control-module rows.
- Cold-weather note: charging is specified from 0 C upward; below that the pack may discharge (down to -10 C) but not charge, per the stated ranges.
Availability & compliance 2
SAJ lists IEC 62619 for cell and pack, EN 62477-1, EN 61000-6-1/2/3/4 and UN38.3 for the B2 high-voltage battery system.
- Transport: UN38.3 is included in the listed set, relevant for freight planning on lithium batteries.
- Documents: the SAJ B2 HV1 / HV5 series high-voltage battery datasheet (AU, EN) is on file.
- Market specifics: for any further country-specific certificate requirements, confirm the certificate set with the quote.
Order the module as SAJ prints it: BU3-5.0-TV2-PRO. The -BASE-1 and -BASE-2 suffixes are third-party shelf labels for the with-base and without-base carton configurations, not separate SAJ models.
- What to do: state your base requirement on the quote and we confirm the carton configuration with SAJ before dispatch.
- Datasheet note: SAJ's B2 datasheet does not specify a base item, so the base is a carton-level option to settle at order time rather than a spec difference.
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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.