Cell
C4V V Series
Prismatic LFP, graphitic carbon anode. No cobalt, no nickel.
314 Ah · 3.2 V
RE+ 2026Booth N3162 · Las Vegas · Nov 17–19Meet the team →
Vault · utility-scale battery storage
Daylight, stored.
Daylight, stored.
Delivered after dark.
The Vault holds over five megawatt-hours of midday sun and wind in one 20-foot container, then releases it when homes switch on their lights, offices run late, and towns hit the evening peak.
5.01MWhper 20 ft container
2.5MWat 0.5C maximum
8,000cycles to 70%
~1,000homes · 4 h evening peak*
Use casesFrom one street
From one street
to the whole grid.
The same Vault scales from a neighborhood to a gigawatt-hour plant. Pick a scale and watch what it keeps lit after sunset.
Neighborhood storage
Carry a neighborhood through the evening peak.
Midday solar charges the Vault. When the sun sets and every kitchen light comes on, it discharges into the local feeder so the street never feels the dip.
1Vault 5000K
~1,000homes for 4 hours
5.0MWh delivered
*Homes based on U.S. EIA average residential use of about 10,800 kWh a year (≈1.2 kW average load). Office based on EIA CBECS office intensity of about 16 kWh per sq ft a year. Nameplate energy at beginning of life; illustrative. Actual results depend on load profile, losses and depth of discharge.
The Vault family
Standard density · C4V 314 Ah cell
One shell. Two densities.
5.01MWh
- Max power
- 2,500 kW · 0.5C
- Continuous
- 1,250 kW · 0.25C
- Cell
- C4V LFP 314 Ah
- Layout
- 6 racks · 12 strings
- DC window
- 1,040 – 1,500 V
- Gross mass
- 44.7 t
≥ 8,000 cycles to 70% · up to 20-year design life.
01
Cooled for twenty years
Runs at 0.25C continuous and 0.5C maximum, below the cell's liquid-cooling line. Intelligent cooling and heating buy uniformity, cold-weather capability and margin.
02
American technology
The BMS hardware and firmware are C4V intellectual property, owned in the United States. On Vault 5000K the cell chemistry, design and process technology are C4V's too.
03
Built for the site
IP55, tested to corrosion class C5, seismic designed to IEEE 693. Outdoor foundation or plinth mounting, supplied without PCS so it pairs with yours.
Inside the Vault · 5000K shownFrom one cell
From one cell
to five megawatt-hours.
C4V designs the cell, controls its manufacturing and writes the battery management firmware that watches it. Every one of the 4,992 cells in a Vault 5000K is monitored for voltage and temperature.
Module & pack
Module & pack
26 cells per module, four modules on a liquid cold plate.
104 cells per packRack
High-voltage rack
Two 416-cell strings, each with its own HV box and BMU.
832 cells · 1,500 VVault
The Vault
Six racks, detection, two-stage suppression, venting, liquid cooling.
4,992 cells · 5.01 MWhCell & module level · evidence on file
UN 38.3UL 1973UL 9540AIEC 62619RoHS
System level · in progress
UL 9540UL 9540A unit & installationIEC 62619 system
Designed to
NFPA 855NFPA 68 / 69IEEE 693
No system-level certificate is claimed for the Vault today. Cell-level test reports and certificates are released on request.
Layered containment
Safety from the cell outward.
Each layer is designed to end an event before the next one is needed. Safety starts with the chemistry, builds outward to the installation, and is wrapped in Digital DNA™ intelligence that never stops watching.
- 01
Chemistry & BMS
LFP with no cobalt and no nickel sets the ceiling on how bad a bad day can be. The C4V BMS watches every cell, balances, monitors insulation and holds the contactors.
- 02
Detection & isolation
Multi-point temperature, smoke and combustible-gas detection. Gas reads a venting cell before there is smoke to see, and the BMS opens the contactors.
- 03
Two-stage suppression
Condensed aerosol first, to knock an event down while it is still one module's problem. Water mist second, to carry heat away and hold a propagating event.
- 04
Explosion control & installation
Deflagration venting and ventilation designed to NFPA 68 and NFPA 69 principles, on a designed path. The installation is designed to NFPA 855.
- 05
Digital DNA™: the power of data and AI Option
The outermost layer is intelligence. C4V's Digital DNA™ watches every cell against its own genomic baseline, giving 360-degree, around-the-clock protection and prediction that flags drift weeks before it becomes a fault. How it works →
Option Digital DNA™ safety intelligenceSee a fault coming
See a fault coming
weeks before it starts.
Certification proves a design passed on test day. Digital DNA™ watches every cell in your Vault, every day it runs.
Healthy cells
Drifting cell
Digital DNA™ early warning
Conventional alarm threshold
Illustrative
On every container
A Digital DNA™ plate you can scan offline.
Product ID, energy, configuration, cell model, cell origin and specification revision. Any phone camera reads it on site, with no network needed.
DDNA-V5000-A · C4V-NP-V5000 · 1P416S × 12
Early fire warning
A cell heading toward thermal runaway usually drifts for days or weeks first. Digital DNA™ reads voltage divergence, impedance rise, slow self-discharge and off-gassing together.
A genomic baseline per cell
Each cell's structure, composition and electrochemical signature is captured early in life, built on 12+ years of materials research and physics-informed AI with quantified confidence.
Living compliance
The limits UL 9540A and IEC 62619 care about become live rules, checked against the real battery as it runs, with an audit-ready record and a digital twin for every pack. About Digital DNA™ ↗
WeeksEarly safety warning
36 mo+Capacity-fade foresight
Every cellTracked against its own baseline
Project plannerSize your plant
Size your plant
in seconds.
Drag to your target energy. These are first-pass figures; our engineering team confirms the final layout, PCS and augmentation plan.
100MWh
102505007501,000
Nameplate energy at beginning of life. Power at the container's 0.5C maximum rating.
20Containers
100.3MWh installed
50.2MW at 0.5C
20,400Homes · 4 h*
Technical specifications
The numbers.
Nominal figures from C4V-VAULT-SPC-001 Rev A, subject to project configuration, site and grid code. Drawings and cell certificates on request.
System ratings
| Rated energy | 5.01 MWh |
| Rated voltage | 1,331.2 V DC |
| Operating voltage range | 1,040 – 1,500 V DC |
| Voltage cutoffs | BMS stops charge at 3.60 V and discharge at 2.50 V per cell |
| Rated charge / discharge | 1,250 kW at 0.25C |
| Maximum charge / discharge | 2,500 kW at 0.5C |
| Configuration | 6 racks · 416 cells in series × 12 strings (4,992 cells nominal; confirm at inquiry) |
| Design cycle life | ≥ 8,000 cycles to 70% |
| Design service life | Up to 20 years, subject to duty cycle and site |
| Conversion | Supplied without PCS, third-party compatible |
Cell · C4V-314AH-72174200-KR
| Chemistry | LFP, V Series, graphitic carbon anode |
| Rated capacity · nominal voltage | 314 Ah at 1C, 25°C · 3.2 V |
| Specific energy · energy density | 176.6 Wh/kg · 401 Wh/L |
| Cycle life · calendar life | ≥ 8,000 cycles to 70% · 15 to 20 years |
| Form factor | Prismatic, 174.0 × 200.0 × 72.0 mm |
| Origin | C4V licensed gigafactory, Republic of Korea, under C4V design and process control |
| Traceability | Digital DNA™, readable offline |
| Certification | Cell and module: UN 38.3, UL 1973, UL 9540A, IEC 62619 on file. System: UL 9540, UL 9540A, IEC 62619 in progress |
Enclosure, thermal & safety
| Enclosure | 20 ft × 8 ft × 9.5 ft container, outdoor, foundation or plinth mounted |
| Ingress · corrosion · seismic | IP55 · tested to C5 · designed to IEEE 693 |
| Thermal management | Intelligent liquid cooling and heating, closed loop on module temperature |
| Design ambient | Up to 55°C, derating per site. Heating protects against charging below −10°C |
| Detection | Multi-point temperature, smoke and gas |
| Suppression | Stage one condensed aerosol · stage two water mist |
| Explosion control | Venting to NFPA 68 and NFPA 69 principles |
| Installation code | Designed to NFPA 855 |
| Options | Digital DNA™ safety intelligence |
Vault 5000K vs Vault 6250K · container level
| Vault 5000K | Vault 6250K | |
| Nameplate energy | 5,016 kWh | 6,262 kWh +25% |
| Power at 0.25C / 0.5C | 1,250 / 2,500 kW | 1,565 / 3,130 kW |
| Cell | C4V LFP 314 Ah | LFP 588 Ah |
| DC voltage window | 1,040 – 1,497.6 V | 1,040 – 1,497.6 V |
| String | 416 cells in series | 416 cells in series |
| Clusters · racks | 12 · 6 single-bay | 8 · 4 double-bay |
| Cells per container | 4,992 | 3,328 |
| Liquid cooling unit | 70 kW class | 80 kW class |
| Gross mass | 44.7 t | 50.7 t |
| Shell | 20 ft high cube, flat roof | Same envelope |
| Safety architecture | Gas detection, aerosol, water mist, venting | Carries over |
Vault 6250K figures are preliminary and in design review (C4V-VLT-CMP-001 Rev A). The 588 Ah cell is a purchased cell, with its supplier datasheet to follow. Request the preliminary pack →
Talk to our team
Let's light up
Let's light up
your site.
Tell us about your project. Our utility-scale team comes back with a sizing, a layout and a budgetary quote.
Typical response
Within two business days
Under NDA
Drawings, SLDs, certification reports