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SunWell Energy

2.56kWh 25.6V Small Wall-Mounted LiFePO4 Battery

2.56kWh 25.6V Small Wall-Mounted LiFePO4 Battery

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The 2.56kWh 25.6V Small Wall-Mounted LiFePO4 Battery is a wall-mounted LiFePO4 battery for homes, shops and small commercial sites. Its IP20 rating and operating range from -20°C to 50°C let it run reliably in dusty, humid or temperature-swing sites. Standard communication ports pair it with mainstream inverters for straightforward system integration.

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2.56kWh 25.6V Small Wall-Mounted LiFePO4 Battery — Technical Specifications
MODELSW-24100-W
Rated Voltage25.6Vdc
Cell Combination8S1P
Rated Capacity100Ah
Energy Storage2.56kWh
Cycle Life25±2℃,0.5C/0.5C, EOL70%≥6000
Max. Charge Current100A
Max. Discharge Current100A
Discharge Cut-Off Voltage21.6Vdc
Charge Cut-Off Voltage28.8Vdc
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)580×390×195mm
Package Dimension(L×W×H)660×450×240mm
Net Weight41.5kg
Gross Weight51kg
Protocol (Optional)CAN/RS485/RS232
MonitoringBluetooth/WLAN Optional
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 2.56kWh 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 up to 100A continuous 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: Keeps lights, routers, and refrigeration running during outages as part of a home essential-load system.
  • Solar Energy Storage: Pairs with PV through hybrid inverters to store daytime solar for evening use.
  • Off-Grid Power: Supplies independent power for cabins, kiosks, and small remote setups away from the grid.
  • Small Home Starter: A practical first step into solar storage for households with modest daily energy demand.
  • Garage & Utility Room: The wall-mounted, space-saving format fits tight indoor spaces without occupying floor area.
  • Telecom & Signal Sites: Provides steady low-voltage backup for small communication and monitoring equipment.

Battery Safety & Protection

The SW-24100-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 2.56kWh (100Ah) with a 25.6V nominal output, the SW-24100-W delivers stable energy for essential and 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 41.5kg net with a compact 580×390×195mm form factor, the unit suits space-limited homes, 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 battery work with my existing 25.6V inverter?

Yes, the SW-24100-W runs at a 25.6V nominal rating and communicates over CAN, RS485, and RS232, so it connects with most standard 25.6V off-grid and hybrid inverters. Check your inverter's protocol during setup.

How long can it run my essential loads?

With 2.56kWh (100Ah) stored, runtime depends on your draw. A 200W essential-load set runs roughly 10–12 hours, while heavier appliances shorten it. The 100A rating handles typical household startup currents.

Can I add another battery later?

Yes. Multiple units can be paralleled over the RS485/CAN bus to grow capacity as your needs increase, letting you scale from a single pack to a larger bank.

Is it safe to use in a home?

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

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