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SunWell Energy

8.0kWh 25.6V Small Wall-Mounted LiFePO4 Battery

8.0kWh 25.6V Small Wall-Mounted LiFePO4 Battery

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Designed for homes, shops and small commercial sites, the 8.0kWh 25.6V Small Wall-Mounted LiFePO4 Battery packs LiFePO4 storage into a wall-mounted enclosure. Its IP20 rating and operating range from -20°C to 50°C let it run reliably in dusty, humid or temperature-swing sites. Owners use it to ride through outages and shift solar or grid energy into the evening peak.

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8.0kWh 25.6V Small Wall-Mounted LiFePO4 Battery — Technical Specifications
MODELSW-25314-W
Rated Voltage25.6Vdc
Cell Combination8S1P
Rated Capacity314Ah
Energy Storage8.0kWh
Cycle Life25±2℃,0.5C/0.5C, EOL70%≥6000
Max. Charge Current100A
Max. Discharge Current100A
Discharge Cut-Off Voltage21.6Vdc
Discharge Cut-Off Voltage21.6Vdc
Charge Temperature0°C to 50°C@60±25% Relative Humidity
Discharge Temperature-20°C to 50°C@60±25% Relative Humidity
Storage Temperature-20°C to 50°C@60±25% Relative Humidity
IP ClassIP20
Material SystemLiFePO4
Case MaterialMetal
Case TypeWall Mount
Product Dimension(L×W×H)618×390×206mm
Package Dimension(L×W×H)785×475×275mm
Net Weight68kg
Gross Weight78kg
Protocol (Optional)CAN/RS485/RS232
CertificatesUN38.3, MSDS, CE-EMC

Features

  • LiFePO4 chemistry delivers safe, long-lasting power. The cobalt-free cells resist thermal runaway and hold capacity through deep daily cycling, rated for 6000+ cycles at high state of health.
  • Wall-mounted design saves floor space. The slim cabinet mounts on a garage or utility-room wall, keeping the 8.0kWh pack out of the way yet easy to cable and inspect.
  • A multi-protocol BMS guards every cell. It tracks per-cell voltage, current and temperature, balances cells and blocks over-charge, over-discharge, over-current and short circuit, talking to inverters over CAN/RS485.
  • Long service life cuts ownership cost. Rated for 6000+ cycles, it supports years of daily charge and discharge without premature replacement.
  • Wide operating range suits tough sites. It discharges from -20°C to 50°C and handles current, staying stable in unconditioned indoor and sheltered spaces.
  • Parallel-ready design grows with you. Add more units on the same bus to expand capacity while keeping the existing inverter and cabling.

Applications

  • Residential Backup: Powers essential and extended household loads through longer outages.
  • Solar Energy Storage: Holds 8.0kWh of daytime PV for evening and overnight use.
  • Off-Grid Power: Supplies independent power for cabins and remote homes.
  • High-Demand Homes: Sustains greater daily energy use on a 25.6V bus.
  • Garage and Utility Room: Wall-mounted format fits a dedicated wall without floor space.
  • Small Commercial: Backs up essential equipment at sites without reliable grid.

Battery Safety & Protection

The SW-25314-W is built around Lithium Iron Phosphate (LiFePO4) cells, a chemistry valued for thermal stability and a low risk of thermal runaway compared with other lithium types. The cells sit inside a metal enclosure rated IP20, which protects against solid-object contact and limits dust ingress in indoor and sheltered installations.

An integrated battery management system, linked through the unit's CAN, RS485, and RS232 ports, handles cell monitoring and balancing for the 8S1P stack. Optional Bluetooth and WLAN modules let installers check status remotely, while the wide operating envelope—0°C to 50°C charging and −20°C to 50°C discharging—keeps the pack online through seasonal swings. UN38.3, MSDS, and CE-EMC certifications confirm international transport-safety and electromagnetic-compatibility compliance.

Performance & Lifecycle Advantage

Rated at 8.0kWh (314Ah) with a 25.6V nominal output, the SW-25314-W delivers stable energy for sustained low-voltage loads through its 100A continuous charge and discharge rating. A discharge cut-off of 21.6Vdc and charge cut-off of 28.8Vdc define a safe operating window that protects cell health over time.

The LiFePO4 chemistry provides a long design life of 6000 cycles at 70% capacity retention under 25±2°C, 0.5C conditions, supporting years of daily cycling. Weighing 68kg net with a 618×390×206mm form factor, the unit suits dedicated wall spaces, and against lead-acid it offers lighter weight, lower maintenance, and better tolerance for frequent deep cycling—lower lifetime cost for backup and off-grid use.

Warranty

LiFePO4 batteries are backed by a 5-year warranty. If you experience any quality issues within the warranty period, please contact us and we will arrange a replacement or repair promptly.

Frequently Asked Questions

Will this work with my 25.6V inverter?

Yes, it runs at 25.6V nominal with CAN, RS485, and RS232, connecting to most standard 25.6V off-grid and hybrid inverters. Confirm your inverter's protocol during setup.

How much can it power?

With 8.0kWh (314Ah) stored, a 500W load runs roughly 14–16 hours, while heavier appliances shorten it. The 100A rating handles typical startup currents.

Can I add more batteries later?

Yes. Multiple units can be paralleled over the RS485/CAN bus to expand capacity as demand grows.

Is it safe indoors?

The LiFePO4 cells and metal IP20 enclosure keep operation stable, charging at 0–50°C and discharging to −20°C. UN38.3, MSDS, and CE-EMC certifications confirm compliance.

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