Description
51.2V All-in-one Stackable LiFePO4 Battery System: overview
The OSM 51.2V All-in-one Stackable LiFePO4 Battery System is a 51.2V / 100 rated stackable all-in-one LiFePO4 battery, storing about 5.12 kWh of nameplate energy. It is engineered for all-in-one home energy storage and whole-home backup.
LiFePO4 (lithium iron phosphate) chemistry is the reference choice for this duty because it is thermally stable, keeps a flat voltage curve across most of the discharge, and tolerates daily deep cycling without the capacity walk-down that lead-acid suffers. The unit is assembled around Grade A cells and managed by a battery management system that enforces the published voltage, current and temperature limits from the factory.
Key features
51.2V All-in-one Stackable LiFePO4 Battery System
- 51.2V at 100 — about 5.12 kWh per unit
- Cycle life: ≥6000 cycles to 85%DOD at the published test conditions
- LiFePO4 chemistry for thermal stability and a flat discharge curve
- Integrated BMS guarding over-charge, over-discharge, over-current and temperature
- Warranty: 60 months with a published cycle-life reference
Specifications
Electrical
| Nominal voltage | 51.2V |
| Nominal capacity | 100 |
| Max charge current | Max 0.5C @25°C |
Cycle life and durability
Mechanical and environmental
| Dimensions | 588*430*195(single) |
| Weight | 51kg(Battery ) |
Control, compliance and commercial
| Warranty | 60 months |
| OSM model | OSM48100 |
| BMS protection | Over-charge, over-discharge, over-current, short circuit, over-temperature |
Applications
| Application | Typical configuration | Why it fits |
|---|
| Solar self-consumption | PV array + hybrid inverter | Stores surplus daytime generation |
| Backup power | Critical-load panel | Bridges grid outages automatically |
| Off-grid systems | Scaled to daily consumption | Deep daily cycling without damage |
| Time-of-use arbitrage | Off-peak charging window | Shifts cheap energy to peak hours |
| Lead-acid replacement | Same nominal voltage | Lighter, longer lasting and maintenance-free |
- Whole-home solar backup
- All-in-one residential ESS with integrated inverter and EMS
- Three-phase and single-phase home systems
- New-build and retrofit installations
51.2V All-in-one Stackable LiFePO4 Battery System — installed configuration example
Sizing this stackable all-in-one LiFePO4 battery for your project
51.2V All-in-one Stackable LiFePO4 Battery System stores 5.12 kWh per unit. For a rough bank size, multiply by the number of units: 1 unit ≈ 5.12 kWh, 4 units ≈ 20.48 kWh, 8 units ≈ 40.96 kWh, 16 units ≈ 81.92 kWh. Confirm the parallel limit and the inverter charge current before you finalise the string.
System voltage. This is a 51.2 V unit, so it matches the 48 V / 51.2 V class of hybrid and off-grid inverters and can sit on the same DC bus as other modules of the same voltage class.
Why buy from OSM
- Plug-and-play stack grows from a single unit to a full home bank
- Integrated inverter, BMS and energy management in one cabinet
- Floor-standing and wall-adjacent installation with no rack needed
- App and portal monitoring for the homeowner and the installer
- Factory-direct pricing with OEM/ODM branding
OSM Battery manufactures and exports LiFePO4 batteries and energy storage systems for distributors, installers and project developers. Every order is built to the published specification, tested before dispatch, and shipped with the documentation your market needs.
51.2V All-in-one Stackable LiFePO4 Battery System — application example
OEM and ODM customization
Beyond the standard configuration, OSM builds to order: enclosure colour and branding, nameplate and label artwork, packaging, cable and connector sets, communication protocol selection and matched charger or inverter bundles. Send the target specification and the artwork, and the engineering team returns a drawing and a quotation.
Frequently asked questions
How long does this stackable all-in-one LiFePO4 battery last?
The published cycle life is ≥6000 cycles to 85%DOD. At one full cycle per day that is well over ten years of service, and the usable life is normally limited by the depth of discharge and the operating temperature rather than by the cells themselves. Keep the pack inside its published temperature window and let the BMS manage the charge profile.
What chemistry does this stackable all-in-one LiFePO4 battery use?
It uses lithium iron phosphate (LiFePO4 / LFP) cells with a nominal rating of 51.2V / 100. LFP is chosen for this duty because it is thermally stable, holds a flat voltage curve for most of the discharge and tolerates daily deep cycling far better than lead-acid or NMC.
How much energy is that in practice?
The nameplate energy is about 5.12 kWh per unit. Usable energy is a little lower because most systems do not go to a full 100% depth of discharge — 90% is the usual planning figure, and that is what to use when you size the bank against daily consumption.
Can it be integrated with a third-party inverter?
Yes. Tell us the inverter model and we will confirm the communication protocol and the charge profile settings before you order, so the battery and the inverter agree on voltage limits and current limits from day one.
What warranty comes with it?
The product carries a 60 months warranty. The terms reference a published cycle life and a calendar limit, so keep the commissioning record and the operating logs — they are what the claim is assessed against.
Do you supply samples and OEM branding?
Yes. OSM supplies single units and samples, and offers OEM/ODM on the enclosure, the label, the nameplate and the packaging. Send the artwork and the target specification and we will return a quotation with the lead time.
Request a quotation
Tell us the voltage, the capacity or the kWh you need, the inverter you are using and the quantity — the OSM team will come back with a price, the datasheet, the MOQ and the lead time. Samples and OEM trials are available.
Contact OSM Battery for wholesale pricing, OEM/ODM and project support.
