51.2V 100Ah LiFePO4 Battery Module
The 51.2V 100Ah module — sixteen 3.2V cells in series, 5.12kWh — is the standard residential building block CMX Battery stacks into 10–30 kWh home banks and small C&I racks.
Overview
At 51.2V nominal and 100Ah, this module delivers 5.12kWh in a single, protected enclosure: sixteen Grade-A LiFePO4 cells in series with an integrated BMS handling balancing, over/under-voltage, over-current and temperature protection, plus busbars and a rack- or wall-mount enclosure. It pairs directly with 48V hybrid inverters and parallels cleanly to reach the system kWh your site needs. We validate every module on capacity, IR balance and thermal behaviour so stacking into a cabinet stays predictable.
Key specifications
| Specification | Value | Why it matters |
|---|---|---|
| Nominal voltage | 51.2V (16 cells × 3.2V) | Standard 48V-class platform for hybrid inverters. |
| Capacity / energy | 100Ah / 5.12kWh per module | Parallel modules to scale system kWh. |
| BMS | Integrated, balancing + full protection | Protects the pack; CAN/RS485 on request. |
| Enclosure | Rack or wall-mount, IP65 | Indoor/outdoor stationary rated. |
| Cycle life | 6,000+ cycles at 80% DoD, 25°C | Quoted at a defined condition. |
| Max continuous discharge | ≈100A (1C) standard; higher on request | Sets the inverter size the module supports. |
Typical applications
- Residential 10–30 kWh banks: Stack 2–6 modules per inverter.
- Small C&I racks: Parallel groups in a cabinet.
- Backup and off-grid: Pairs with 48V hybrid or off-grid inverter.
- OEM equipment bays: Custom mounting on request.
How to specify & buying guide
- Match the module voltage (51.2V) to your inverter's 48V battery range so charge/absorb/float setpoints line up.
- Size the inverter to the module's max continuous current (≈1C) unless you spec a higher-rate version.
- Parallel only identical modules (same Ah and BMS firmware) and use the same cable lengths to keep them balanced.
- Confirm the enclosure mount (rack vs wall) and IP rating for the install location.
Engineering & manufacturing at CMX Battery
Our modules pair matched LiFePO4 cells with a purpose-built BMS, busbars and mechanical enclosure. We design for the thermal and vibration profile of the application — stationary rack, wall mount or mobile pack — and validate the assembly on capacity, IR balance and thermal runaway margin before it ships.
Certifications & compliance
- UN38.3 — Mandatory lithium battery transport test (altitude, thermal, vibration, shock, external short). Required for any cross-border shipment.
- IEC62619 — International safety standard for industrial Li-ion cells and batteries; expected by EU and most APAC buyers.
- UL1973 — North American safety standard for stationary lithium battery systems.
- CE — EU declaration of conformity for the applicable directives.
- RoHS — Restriction of hazardous substances in the battery and BMS.
- IP65 — Dust-tight and low-pressure water-jet resistant — suitable for outdoor enclosures.
Frequently asked questions
How many modules for 10 kWh?
Two 5.12kWh modules in parallel give ≈10.24kWh usable.
Will it work with my 48V inverter?
If the inverter's battery range covers 44–58V (LiFePO4), yes — 51.2V is the standard 48V-class platform.
Can I wall-mount it?
Yes, a wall-mount enclosure version is available; confirm wall rating with your installer.
What BMS communication is supported?
Standard protected BMS; CAN/RS485/Bluetooth available on request for system monitoring.
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Request a quote
Send us your voltage, capacity, dimensions, certification target and annual volume. Our engineering team returns a proposal within three working days. Start your RFQ or review our custom pack capabilities.