Engineered from one cell.
Most storage companies assemble parts they buy. AEGIS controls the entire stack — from the chemistry of a single LiFePO4 cell to the firmware reading it every few seconds. This is how the system works, and why it hasn't failed.
One cell, sixteen to a pack, packs to a string.
Every AEGIS system — a 48 kWh home cabinet or a 6.4 MWh container — is built from the same unit: a single audited LiFePO4 prismatic cell, 3.2 volts nominal, 314 amp-hours. Sixteen of those in series make one pack, the 48-volt primary at 51.2 volts nominal. Stack packs in series and the voltage climbs into the hundreds; each pack carries its own BMS reporting to a master BMS that balances the whole string.
Because the architecture is modular, capacity and voltage are just a function of how many packs are present — and every one is a part AEGIS built and can account for, down to the cell. Disconnects, conductors and surge protection are rated to the full-charge ceiling of the build, never the nominal figure.
| Build | Series | Nominal | Full charge | Class / use |
|---|---|---|---|---|
| Single cell | 1S | 3.2 V | 3.65 V | Reference unit |
| Pack — 48 V primary | 16S | 51.2 V | 58.4 V | Shield 3.0 base · pack BMS |
| Shield 4.0 string | 45S | 144 V | 164.25 V | Commercial EV Ready |
| HV setup — 6 modules | 96S | 307.2 V | 350.4 V | Voltage increment |
| HV string — 12 modules | 192S | 614.4 V | 700.8 V | Max whole-module build |
| HV ceiling (raw-cell) | 220S | 704 V | 803 V | 803 V max per inverter |
LiFePO4 cell limits: 3.2 V nominal · 3.65 V full charge · 2.5 V cutoff. Module setups build in 6-pack increments; the whole-module ceiling is 192S (700.8 V), capped at 803 V per inverter.
Every variable, controlled in-house.
AEGIS audits its cells, designs its own battery-management system, writes its own firmware, fabricates its 5052-H32 aluminum enclosures, and builds the Command Center software that watches it all — under one roof in San Diego. Nothing critical is a black box sourced from a vendor who can change it without telling you.
Since the platform's 2023 introduction: zero field failures.
That control is the reason AEGIS can stand behind a 25-year warranty and a 16,000-cycle rating. It is also the reason the company exists: AEGIS was founded in 2022 after counterfeit cells flooded the market, absorbing roughly $3M to replace every affected unit and resolving never to ship a cell it couldn't vouch for.
Safe by chemistry, then by design.
AEGIS uses LiFePO4 (LFP) chemistry for one decisive reason: thermal stability. LFP cells have a thermal-runaway onset near 251 °C — materially higher than the nickel-based chemistries common in consumer storage — so the failure mode that worries homeowners and fire marshals is far less likely to begin in the first place.
On top of the chemistry sits a four-layer fire-protection architecture, the 5052-H32 aluminum enclosure, and cell-level monitoring. The systems are independently listed to UL 1973, UL 9540 and UL 9540A — covering battery systems, complete energy-storage systems, and large-scale fire-propagation testing — with UL 9540B in process and a CEC Solar Equipment List pathway underway.
The fastest, most secure monitoring we could build.
Every AEGIS Shield ships with an AEGIS Brain: a dedicated on-site edge gateway that reads every inverter register, every BMS cell, and every temperature sensor every 5 to 25 seconds, then streams it to the cloud under encryption. You see state of charge, load, solar, export and per-cell health in near real time — and so does AEGIS, which means problems are visible before they become failures.
For government and defense deployments, the monitoring stack is built around NIST SP 800-171-aligned controls, with the same cell-level visibility extended to containerized microgrids.
One architecture, residential to industrial.
The same cell-to-string platform scales across the entire product line. Residential Shield systems run at the 48-volt primary on Sol-Ark split-phase inverters; high-voltage commercial and industrial systems run on Sol-Ark 30K or 60K inverters from a shared HV pool, matched to site service. Off-grid and mobile systems stack 60K inverters for hundreds of kilowatts of three-phase output.
| System | Battery configuration | DC voltage | Inverter — AC output |
|---|---|---|---|
| Shield 3.0 | 1–3 × 16S pack | 51.2 V | Sol-Ark 8K–18K · 120/240 V split-phase |
| Shield 3.0 Tower | 6 × 16S parallel (96 kWh) | 51.2 V | Sol-Ark 8K–18K · 120/240 V split-phase |
| Shield 4.0 EV Ready | 2 × 45S (96 kWh) + 30 kW EV | 144 V | Sol-Ark 30K / 60K · HV-class |
| Shield 6.0 | 220S string (Power Container) | 704 V | Sol-Ark 30K / 60K · HV-class |
| Power Container | 29 × 220S (~6.4 MWh) | 704 V | 7 × Sol-Ark 60K · 480 V 3φ · 420 kW |
| MWPU Trailer | HV bank ~150–200 kWh | ~700 V | 3 × Sol-Ark 60K · 480 V 3φ · 180 kW |
Inverter pairing is strict by class: residential 48 V systems use Sol-Ark 8K–18K split-phase; HV-class systems use Sol-Ark 30K (120/208 V 3φ) or 60K (277/480 V 3φ), interchangeable per site service. Distinct configurations never share specifications.
From the garage to the base.
AEGIS carries the same zero-failure discipline into government and defense work: containerized 40-ft microgrids, configurations designed to MIL-STD-810 and DO-160 qualification, NIST SP 800-171-aligned SCADA, and a path through CEC listing and federal registration. The thesis is energy assurance — power for the bases and infrastructure that simply cannot go dark.
MIL-STD-810 / DO-160 referenced as designed-to qualification targets; certification status as stated per program.
Own the system. Monitor every cell.
Explore the Shield line, model your savings, and see what cutting the grid — and the gas station — looks like for you.