25.6V 100Ah lithium iron phosphate battery for energy storage systems. 2.56kWh modular building block for 24V solar and off-grid applications.
Product Overview
The 25.6V 100Ah LiFePO4 battery delivers 2.56kWh of deep-cycle energy storage in a compact unit built for 24V solar systems, off-grid cabins, and backup power. As a modular building block, it connects in parallel for larger capacity or in series for 48V/51.2V systems, giving installers flexibility across residential and light-commercial projects.
For buyers building 24V systems — RV upgrades, small off-grid setups, telecom backup — this battery covers the standard 24V replacement scenario. See also our 24V 100Ah battery page and home energy storage solutions for system design guidance.
- 2.56kWh usable energy — modular block for 24V solar, off-grid, and backup systems
- 100A continuous BMS — reliable power for inverters up to 2.5kW
- Series/parallel flexible — 4S for 48V banks, parallel for higher capacity
- Long cycle life — LiFePO4 chemistry rated for thousands of deep cycles
Technical Specifications
| Group | Parameter | Value | Status |
|---|---|---|---|
| Model | Model number | LJY-25V100AH-ES | Typical |
| Electrical | Nominal voltage | 25.6V (8S LiFePO4) | Typical |
| Electrical | Rated capacity | 100Ah | Typical |
| Electrical | Energy | 2.56kWh | Typical |
| BMS | Continuous discharge current | 100A | Typical |
| BMS | Peak discharge current | 200A (short duration) | Typical |
| BMS | Protections | Overcharge, over-discharge, over-current, short-circuit, temperature | Typical |
| Charging | Charge voltage | 29.2V (LiFePO4 charger required) | Typical |
| Charging | Recommended charge current | 20–50A | Typical |
| Durability | Cycle life | 4000+ cycles at 80% DOD (reference) | Typical |
| Durability | Operating temperature | Charge 0–55°C / Discharge −20–60°C | Typical |
| Mechanical | Case | ABS or metal case (configurable) | Typical |
| Mechanical | Dimensions / weight | To be confirmed — consult for exact size; approx. 20–25 kg | To Be Confirmed |
| System | Series connection | Up to 2 in series (51.2V) | Typical |
| System | Parallel connection | Up to 4 in parallel | Typical |
| Options | Bluetooth monitoring | App-based SOC and cell monitoring | Optional |
| Options | Low-temperature heating | Available on request | Optional |
Specifications above are typical reference values for quotation and comparison. Final specifications are confirmed in the formal quotation before order. We do not present sample parameters as fixed commitments, and we do not claim third-party test results or certifications we cannot verify.
Compatibility & Applications
Typical applications
- 24V solar systems — off-grid cabins, workshops, remote installations
- RV and marine 24V upgrades — higher-efficiency 24V house systems
- Backup power — UPS replacement, telecom backup, emergency power
- Modular energy storage — parallel blocks for scalable residential storage
- 48V system building — two units in series for 51.2V banks
See also: Home Energy Storage Solutions for system sizing guidance.
Charging & Compatibility
How to charge
- Use a LiFePO4-compatible charger with 29.2V charge profile
- Compatible with MPPT solar charge controllers set to lithium/24V profile
- Recommended charge current 20–50A (0.2C–0.5C)
- For series/parallel banks, charge batteries individually to the same voltage before connecting
The built-in BMS manages cell balancing during charge and protects against overcharge. For system design guidance, see our cell balancing buyer’s guide.
Lifespan & Safety
- 4000+ deep cycles at 80% DOD — far beyond lead-acid service life
- Built-in BMS protection — guards against overcharge, over-discharge, over-current, short-circuit, and temperature extremes
- LiFePO4 chemistry — thermally stable, safe for residential and commercial installations
- No maintenance — no watering, no acid, no equalization needed
Cycle-life figures are reference values; actual service life depends on depth of discharge, charge rates, and operating temperature. We do not fabricate test results.
Wholesale, OEM & ODM
- Capacity options: 50Ah–200Ah available in 24V/25.6V format
- BMS customization: current rating, Bluetooth, low-temperature heating, communication protocols
- Mechanical customization: case type, dimensions, terminals, handles
- System integration: matched inverters, chargers, and monitoring on request
We are not limited to the SKUs listed on this site. LJY Energy can configure batteries around your application — tell us your voltage, capacity, and volume requirements.
Frequently Asked Questions
Can I use this in my 24V solar system?
Yes — 25.6V nominal is the LiFePO4 equivalent of a 24V lead-acid bank. Use an MPPT controller with lithium profile set to 29.2V absorption.
Can I connect two in series for 48V?
Yes, up to 2 in series for a 51.2V bank. Use identical units and equalize voltage before connecting.
What inverter size does it support?
With 100A continuous BMS, it supports inverters up to ~2.5kW at 24V. For larger inverters, parallel multiple units.
How long will it last?
Reference cycle life is 4000+ cycles at 80% DOD. Actual life depends on usage patterns, temperature, and charge practices.
Do you offer OEM customization?
Yes — capacity, BMS features, case, branding, and documentation can be customized. Contact us with your requirements.
Technical Resources
Related reading:
- Home Energy Storage Solutions — system sizing and design
- 51.2V 100Ah Wall-Mounted Battery — larger home storage option
- LiFePO4 BMS Selection Guide
- Cell Balancing Buyer’s Guide
- Contact LJY Energy — request a wholesale quote