SAJ B2 Series Home Battery
The SAJ B2 Series is a home battery that stores the energy your solar panels generate and makes it available when you need it most during the evening, overnight or through a power outage. Built on LiFePO4 cells, it is a dependable solution for residential energy storage that keeps your home running on clean solar power around the clock.
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Home Energy Storage with LiFePO4 Technology
The SAJ B2 Series runs on cobalt-free LiFePO4 cells, which are known for being safe, stable and long-lasting. This makes it a solid option for residential solar installations looking for a battery that performs consistently over time. It carries an IP65 rating, so it handles outdoor conditions without any issues, and remote firmware upgrades mean the system can be updated effortlessly.
Start Small, Expand When You're Ready
Not every home needs the same amount of battery storage. The SAJ B2 Series lets you start with what you need today and add more capacity later as your energy usage grows. There is no need to replace anything you simply add another module to the existing setup when the time is right.
Module
Per stack
Stack
Depth of discharge
Built for Everyday Home Use
The SAJ B2 Series is built to fit into your home and work quietly in the background charging during the day from your solar panels and powering your home when the sun goes down. It is a straightforward solution that takes care of your energy needs without any complicated setup or ongoing management.
- Safe & reliable LiFePO4 batteries
- Remote firmware upgrade
- Modular design scalable up to 25.0 kWh
- IP65 outdoor design
- 90% depth of discharge
- Wall-mounted or ground-mounted
SAJ B2 Series 5 kWh Battery
Per battery module (B2-5.0-HV1). Stack figures scale with the number of modules, up to 25 kWh; a control module (BC2-HV1) is included with each stack.
Power
Usable storage capacity
Total storage
Max charging / discharging current
Dimensions (WHD) & weight
50.5 kg
Key features
Safe & reliable
Cobalt-free LiFePO4 battery cells.
Scalable up to 25 kWh
Modular design add 5 kWh modules to one stack.
IP65 outdoor design
Wall-mounted or ground-mounted, indoors or out.
Remote firmware upgrade
Stays current with over-the-air updates without an effort.
SAJ B2 5kWh HOME BATTERY (1 MODULE)
| Model | BU2-5.0-HV1 |
|---|---|
| Feed-in type | Single phase |
| Rated energy | 5 kWh |
| Usable energy | 4.5 kWh |
| Rated power | 3072 W |
| Dimensions (W × H × D) | 626 mm × 261 mm × 365 mm |
| Weight | 50.5 Kg |
| Nominal voltage | 102.4 V |
| Operating voltage | 89.6 – 115.2 V |
| Max. charge current | 30 A |
| Max. discharge current | 30 A |
CONTROL MODULE
| Max. fault current | 100 A |
| Dimensions (W × H × D) | 626 mm × 220 mm × 365 mm |
| Weight | 11 kg |
GENERAL PARAMETERS
| Ingress protection | IP65 |
| Mounting | Wall-mounting (optional) / Ground-mounted |
| Operating temperature range | Charging: 0 – 50 ℃; Discharging: −10 – 50 ℃ |
| Ambient humidity | 0 – 95% non-condensing |
| Cooling method | Natural convection |
| Communication | CAN |
| Applicable standard | IEC 62619 (Cell & Pack), EN 62477-1, EN 61000-6-1/2/3/4, UN38.3 |
SAJ B2-xx-HV Series Datasheet (PDF) ↓
Manufacturer figures, current at time of publication. We recommend confirming details with the datasheet before purchase.
Questions
SAJ B2 Series FAQs
Can’t find what you’re looking for? Get in touch with our team. Call us at 1300 646 419.
The SAJ B2 Series is a home battery that stores solar energy during the day and powers your home at night or during a blackout.
Most homes start with one or two modules. You can always add more later as your energy usage grows.
Yes. The B2 Series is IP65 rated so it handles dust, rain and outdoor conditions without any issues.
The SAJ B2 Series is compatible with SAJ H2 Series hybrid inverters.
Yes. You can add modules to your existing stack at any time without replacing anything already installed.
The SAJ B2 Series comes with a 10-year warranty.
Free quote
Get a SAJ B2 quote for your home.
Tell us a little about your home and energy usage and we will put together a tailored SAJ B2 quote with the right battery size and pricing.