51.2V 5kWh Ultra-Thin LiFePO4
Wall-mount Residential Solar Battery
The BSLBATT PowerLine-5 is a 5.12kWh (51.2V 100Ah) LiFePO4 wall battery with an ultra-thin 90mm profile designed for space-constrained residential solar installations. It supports up to 32 units in parallel for 163kWh total capacity, communicates via CAN, RS485, WiFi, and Bluetooth, and delivers 6,000+ cycles at 95% depth of discharge with a 10-year warranty.
90mm Ultra-Thin Design: Fits Where Standard Batteries Cannot
At just 90mm thick, the PowerLine-5 is among the thinnest wall-mounted home batteries available. The compact 700 × 540 × 90 mm footprint installs flush against interior walls, inside utility closets, and in narrow hallways where standard-depth batteries (typically 150+ mm) do not fit.
The PowerLine-5 uses cobalt-free lithium iron phosphate (LiFePO4) cells in a 16S1P configuration, delivering 5.12kWh of nominal capacity with 4,864Wh usable energy at 95% depth of discharge. Rated for 6,000+ charge-discharge cycles at 25℃, the battery is designed for 15+ years of daily cycling.
Connect the PowerLine-5 to new or existing photovoltaic systems using DC or AC coupling. The built-in BMS communicates via RS232, RS485, CAN, WiFi, and Bluetooth, enabling integration with most 48V hybrid and off-grid inverters.
Ultra-thin Design, Just 90MM
DC or AC Coupling, On or Off Grid
106 Wh/kg Energy Density
WiFi + Bluetooth App Monitoring
Up to 32 Units in Parallel (163kWh)
Cobalt-Free LiFePO4 Cells
PowerLine-5: Scale from 5kWh to 163kWh with up to 32 units in parallel.
Compatible with DC-Coupled and AC-Coupled Solar Systems
The PowerLine-5 integrates with both new and existing residential PV installations. In a DC-coupled system, the battery connects directly to a hybrid inverter for higher round-trip efficiency. In an AC-coupled retrofit, it pairs with a battery inverter on the AC side, allowing you to add storage without replacing your existing solar inverter.
AC Coupling System
DC Coupling System
Who Is the PowerLine-5 Designed For?
Solar Installers with Space Constraints
The 90mm profile fits inside utility closets, narrow hallways, and behind doors where standard wall batteries (150+ mm deep) cannot be installed. This opens up project opportunities in apartments, townhouses, and retrofit jobs with limited wall space.
Distributors Seeking a Differentiated SKU
Most 5kWh wall batteries on the market share similar dimensions. The ultra-thin form factor gives your product catalog a distinct option for customers who prioritize aesthetics and compact installation.
Off-Grid System Integrators
With 32-unit parallel expansion (163kWh) and -20℃ to 55℃ discharge range, the PowerLine-5 scales from single-home backup to multi-unit off-grid deployments in extreme climates.
Compatible Inverter Brands
The PowerLine-5 communicates with hybrid and off-grid inverters via CAN bus and RS485 protocols. Supported brands include:
CAN Bus
Victron Energy · Deye · SMA · Goodwe · Solis · SolaX · Growatt · Sofar Solar · Sungrow · Fox ESS · Pylontech (compatible protocol) · Sunsynk · Luxpower · Sermatec · Must · Sacolar · Kodak · Sol-Ark · EG4 · Voltronic
RS485
Victron Energy · Deye · Goodwe · Solis · SolaX · Growatt · Sofar Solar · Studer · Schneider · Sunsynk · Luxpower · Megarevo · Atess · Sacolar · Must · MPP Solar · PowMr
Factory-Direct Pricing for Solar Distributors
BSLBATT manufactures the PowerLine-5 at its own facility in Huizhou, China, eliminating intermediary markups. Volume pricing, custom branding (OEM/ODM), and flexible MOQ arrangements are available for distributors, system integrators, and EPC firms.
Contact our sales team for a project-specific quotation.
PowerLine-5 Ultra-Thin Wall Battery FAQ
Q1: How thin is the PowerLine-5 compared to standard wall batteries?
The PowerLine-5 measures 90mm (3.5 inches) in depth. Most standard 5kWh wall-mounted batteries on the market are 150mm or thicker. The thinner profile allows installation in hallways, utility closets, and behind doors where conventional wall batteries do not fit.
Q2: Can I mix the PowerLine-5 with other BSLBATT battery models in parallel?
No. Parallel connections require identical battery models with matched voltage and BMS firmware. You can connect up to 32 PowerLine-5 units in parallel for a maximum system capacity of 163kWh. Do not mix the PowerLine-5 with Li-Pro, B-LFP48, or any other series.
Q3: Is the PowerLine-5 suitable for outdoor installation?
The PowerLine-5 is rated IP20, which means it is designed for indoor installation only. For outdoor or semi-exposed environments, consider the BSLBATT Li-Pro 5120 with IP65 ingress protection.
Q4: What is the usable capacity of the PowerLine-5?
With 95% depth of discharge, the usable capacity is 4,864Wh from the 5,120Wh nominal total. This means 256Wh is reserved by the BMS to protect long-term cell health.
Q5: Which inverters are compatible with the PowerLine-5?
The PowerLine-5 communicates via CAN bus and RS485 protocols, supporting over 30 inverter brands including Victron Energy, Deye, Goodwe, Solis, SolaX, Growatt, SMA, and Sofar Solar. Check the compatible inverter list on this page for the full brand directory.
Q6: How many years will the PowerLine-5 last?
Rated for 6,000+ cycles at 25℃, the PowerLine-5 is designed for 15+ years of daily cycling. The 10-year warranty covers performance degradation below the guaranteed capacity threshold.
Q7: Can the PowerLine-5 work in an off-grid system?
Yes. The PowerLine-5 supports both on-grid (hybrid) and off-grid configurations using DC coupling or AC coupling. For off-grid systems in remote locations, connect multiple units in parallel to match your daily energy consumption.
Powerline-5 from BSLBATT
The BSLBATT PowerLine-5 brings wall-mounted solar storage into spaces where standard batteries do not fit. If you are a solar installer, distributor, or system integrator looking for a slim-profile 5kWh LiFePO4 battery with wide inverter compatibility and large-scale parallel expansion, contact our team for product specifications and volume pricing.
| Model | PowerLine-5 | |
| Cell Chemistry | LiFePO4 | |
| Cell & Method | 16S1P | |
| Nominal Voltage (V) | 51.2 | |
| Nominal Capacity (wh) | 5120 | |
| Usable Capacity (wh) | 4864 | |
| Dimension (W*H*D) | 700*540*90 mm | |
| Weight (Kg) | 48.3Kg | |
| Discharge Voltage (V) | 47 | |
| Charge Voltage (V) | 55 | |
| Charge | Rated Current / Power | 80A / 4.096kW |
| Peak Current / Power | 110A / 5.632kW | |
| Discharge | Rated Current / Power | 100A / 5.12kW |
| Max.Current / Power | 120A / 6.144kW, 1s | |
| Peak Current / Power | 150A / 7.68kW, 1s | |
| Communication | RS232, RS485, CAN, WIFI, Bluetooth | |
| Depth Of Discharge | 95% | |
| Expansion | Up to 32 units in parallel | |
| Working Temperature | Charge | 0~55 ℃ |
| Discharge | -20~55 ℃ | |
| Storage Temperature | 0~35 ℃ | |
| Short Circuit Current / Duration Time | 350A, Delay time 500μs | |
| Cooling Type | Nature | |
| Protection Level | IP20 | |
| Monthly Self-discharge | ≤ 3% / month | |
| Monthly Self-discharge | ≤ 60% RH | |
| Monthly Self-discharge | < 4,000m | |
| Warranty | 10 Years | |
| Design Life | >15 Years (25 ℃ / 77 ℉) | |
| Cycle Life | >6000 cycles, 25 ℃ | |
| Certification &Safety Standard | UN38.3 | |
