XEYAR Supercapacitor BESS.
500,000 Cycles. 45 Years. Zero Runaway.
Electrostatic energy storage engineered for power-dominant duty cycles. Stores energy as pure electrical charge on carbon electrode surfaces — no chemical reaction, no thermal runaway, no derating in heat. Sub-millisecond response, 97%+ system efficiency, and a 20-year warranty backed by physics, not optimism.
A Supercapacitor BESS Needs Patented Software.
Supercapacitor cells are remarkable — but cells alone are not a deployable system. The cells require voltage-based SOC estimation, ESR thermal modeling, and sub-millisecond power-density dispatch that no off-the-shelf BMS provides. That control layer is what XEYAR Nexus patents — and what makes XEYAR Supercapacitor BESS a managed asset class, not a chemistry experiment.
The XEYAR Nexus Provisional Patent Application covers the unified intelligent management platform for energy storage and EV charging infrastructure. Its 45 claims span 11 technical modules, including the chemistry abstraction layer, hybrid orchestration engine, dedicated supercapacitor management module, OCPP 2.0.1 bidirectional charger management, virtual power plant dispatch engine, federated learning analytics, and automated revenue distribution.
For a XEYAR Supercapacitor BESS deployment, the most relevant patented module is §7.4 — Supercapacitor Management Module (CapMS). A standard BMS, designed for electrochemical cells with Coulombic SOC, will not work on a supercapacitor. The CapMS implements voltage-based SOC using the fundamental relationship E = ½ C V², ESR thermal modeling that exploits the inverse temperature coefficient (ESR decreases as heat rises), and sub-millisecond power-density limiting calibrated to the cell's electrostatic dynamics.
The Nexus patent claims priority to and incorporates by reference the XEYAR Cluster Provisional Patent Application (39 hardware claims). Together they form a complete hardware-plus-software IP stack — protecting the system at the architectural level, not at the feature level.
- Claims
- 45 total
- Technical Modules
- 11
- Independent Claims
- 1 · 15 · 25 · 35
- Supercap Module
- §7.4 CapMS
- Inventor
- Sal Möten
- Parent Application
- Cluster (39 claims)
- Filing Year
- 2026
- Status
- Patent Pending
What Nexus Patents — for Supercap
Voltage-Based SOC (E = ½ CV²)
Patented control algorithm computing State of Charge from cell voltage using the fundamental electrostatic energy equation. No coulomb counting drift, no SEI modeling, no temperature-aging compensation needed — voltage is the SOC.
CapMS · SOCESR Thermal Model (Inverse Coefficient)
Patented thermal-coefficient model that exploits supercapacitor's inverse ESR-temperature behavior: as heat rises, ESR drops, efficiency improves. Nexus dispatches harder into hot deployments, not less — the opposite of how every BMS handles temperature.
CapMS · ThermalSub-Millisecond Power Dispatch
Patented orchestration engine that routes transient loads (<1 s) to supercapacitor storage with sub-millisecond response — limited only by PCS switching speed. Frequency regulation, DCFC launch transients, and UPS failover all qualify.
OrchestrationChemistry Abstraction Layer
Patented unified state vector — SOC, SOH, SOP, thermal state, fault flags — that normalizes electrostatic and electrochemical storage into one orchestration interface. Same code path manages either chemistry; deployment chooses which one.
AbstractionVPP Dispatch · Frequency Regulation
Patented automated participation in CAISO, ERCOT, PJM, NYISO, and National Grid ESO. Supercapacitor's sub-millisecond response qualifies for the highest-tier primary frequency regulation markets — a revenue tier most BESS cannot bid into.
Grid ServicesEdge Determinism · Cloud Analytics
Patented split architecture: safety-critical algorithms (SOC, SOH, thermal limits, fault detection) run on the edge gateway with sub-millisecond determinism. Analytics, forecasting, and VPP coordination run in the cloud. Fail-safe through network outages.
ArchitectureNone of the cited prior art references, alone or in combination, discloses: (1) a unified chemistry abstraction layer managing both electrostatic (supercapacitor) and electrochemical storage with opposite thermal coefficients; (2) time-domain hybrid dispatch routing transient loads to supercapacitors with seamless handoff; (3) thermal-aware dispatch adjusting power allocation based on opposite temperature responses; (4) OCPP 2.0.1 bidirectional charger management integrated with VPP dispatch and supercapacitor storage; and (5) federated learning for fleet-wide predictive maintenance across heterogeneous chemistries.
Pure Electricity. Pure Power.
An electrostatic device — not an electrochemical cell. Stores energy as pure electrical charge on the surface of carbon-based electrodes, delivering 500,000+ cycles, sub-millisecond response, and a 45-year design life with no chemical degradation mechanisms.
How it works
A supercapacitor stores energy the way a lightning bolt stores charge: electrostatically, on the physical surface of the electrode. There is no chemical reaction — no ion intercalation, no SEI layer, no lithium plating, no electrode expansion or contraction. The energy relationship is governed by the fundamental physics equation E = ½ C V².
Because nothing chemically breaks down during charge or discharge, 100% depth-of-discharge imposes no cycle-life penalty. Cells routinely exceed 500,000 cycles. The operating envelope spans −40°C to +65°C with no active thermal conditioning, and — critically — equivalent series resistance (ESR) decreases as temperature rises. This is the opposite of every electrochemical cell on earth.
Heat improves supercapacitor performance. In hot climates, this means no derating and no parasitic HVAC load. The XEYAR engineering team uses this property to size systems aggressively for hot deployments — a thermal-aware advantage that is architecturally impossible with any battery chemistry.
Cell architecture
Carbon-Based Electrodes
High-surface-area activated carbon forms the electrode plates. Charge is stored physically on the surface — not chemically inside the lattice.
Electrolyte & Separator
Ion-conductive electrolyte with non-hazardous materials. No flammable organics, no off-gassing, can be hermetically sealed.
Voltage-Based SOC
State of charge follows E = ½ CV² — a linear voltage-to-energy relationship. CapMS applies voltage-based SOC estimation without coulomb-counting drift.
CapMS (125b) Governance
Dedicated Capacitor Management System replaces the BMS: voltage-based SOC, cell balancing, ESR thermal modeling, power-density current limiting, sub-millisecond response.
Full Technical Specifications.
Every parameter behind the 20-year warranty. These specs reflect the system-level performance of XEYAR Supercapacitor BESS as deployed inside the UL 9540 3rd Edition DC ESS boundary, governed by the CapMS 125b management layer.
Why XEYAR Supercap Wins.
Six engineering properties that combine to redefine LCOS for power-dominant applications.
Sub-Millisecond Power
Unmatched peak-power delivery: instantaneous response for fast-frequency regulation, DCFC launch transients, data-center UPS failover, and 4G/5G/6G base-station bursts. No electrochemical kinetics in the loop.
Virtually Infinite Cycle Life
500,000+ cycles vs. 3,000–6,000 for LFP. Cycle and calendar degradation are both effectively absent, enabling the 45-year design life and 20-year warranty that redefine LCOS at the system level.
Heat Helps, Not Hurts
Hot desert rooftop? Heat improves supercapacitor efficiency by lowering ESR. No HVAC parasitic load, no climate-specific SKU, no thermal-management maintenance contract. The hotter it is, the better it runs.
Zero Thermal Runaway
No chemical reaction means nothing to combust. Compliant with NFPA 855, IBC, IFC, NEC Article 706, CEC, and CSA for indoor and multi-unit residential deployment without dedicated fire suppression.
Zero Oversizing Required
100% usable DoD with no cycle-life penalty means you size the system to the actual energy required — not 130–150% (lithium) or 300–500% (lead-acid). Capex savings flow directly to LCOS.
Air-Transport Safe · Non-Hazardous
Carbon-based, non-flammable, no off-gassing. Ships unrestricted by air, sea, or rail. Simplifies global logistics for GCC, MENA, and remote North American deployments.
Certified to Every Applicable Standard.
XEYAR Supercapacitor BESS carries certifications for North American, European, GCC, and MENA markets. The DC ESS boundary is fully UL 9540 3rd Edition listed; subsystems carry independent listings under their respective standards.
XEYAR Supercapacitor BESS is selected when the application is power-dominant: DC fast-charging launch transients and battery-buffered EV charging clusters; grid-frequency regulation (fast-frequency response and sub-millisecond up/down signals); data-center UPS failover; 4G/5G/6G base-station peak support; regenerative-braking capture for industrial and rail; solar/wind ramp smoothing; and any duty cycle defined by short, repeated, high-power bursts — where lithium-ion would wear itself out from cycle stress.
The Technical Questions We Hear Most.
Direct, engineering-grade answers to common questions about XEYAR Supercapacitor BESS — the chemistry, the warranty, the certifications, and how to know when supercap is the right answer for your project.
How is a supercapacitor different from a battery?
A battery stores energy chemically — ions move between electrodes through a chemical reaction, which causes gradual degradation over thousands of cycles. A supercapacitor stores energy electrostatically — as pure electrical charge on the surface of carbon electrodes, with no chemical reaction.
The result: 500,000+ cycles vs 3,000–6,000 for lithium-ion, sub-millisecond response vs 50–200 ms, and no thermal runaway risk because there is nothing to chemically combust. Trade-off: lower energy density, so supercap is the right answer for power-dominant duty cycles, not multi-hour energy delivery.
Why does heat help supercapacitor performance instead of hurting it?
In a battery, heat accelerates side reactions (SEI growth, electrolyte breakdown) and degrades cycle life. In a supercapacitor, there are no chemical side reactions — heat simply increases ion mobility in the electrolyte, which lowers ESR (equivalent series resistance). Lower ESR means more efficient charge/discharge.
So in a Dubai or Phoenix rooftop deployment, a supercapacitor actually runs more efficiently than at moderate temperatures — with no derating, no HVAC parasitic load, and no maintenance contract for thermal management. This is the inverse of every electrochemical cell on earth.
What is the warranty on XEYAR Supercapacitor BESS?
20 years — the longest warranty in the energy-storage industry. The warranty reflects the fundamental absence of capacity-fade mechanisms in electrostatic storage.
There is no SEI layer to grow, no electrode lattice to degrade, no electrolyte to dry out. The cells routinely exceed 500,000 cycles in lab and field testing, supporting a 30–45 year design life. The 20-year warranty is a fraction of the design life — not the limit of it.
What applications is XEYAR Supercapacitor BESS best suited for?
Power-dominant applications where the duty cycle is defined by short, repeated, high-power bursts. Best fits:
DC fast-charging launch transients and battery-buffered EV charging clusters; grid-frequency regulation (FFR, primary & secondary); data-center UPS failover; 4G/5G/6G base-station peak support; regenerative-braking capture for industrial and rail; solar/wind ramp smoothing; and any duty cycle where lithium-ion would wear itself out from cycle stress.
Can XEYAR Supercapacitor BESS deliver hours of energy?
For sustained multi-hour energy delivery, sodium-ion is generally the better fit. XEYAR Supercapacitor BESS is purpose-built for power-dominant duty cycles — short, repeated, high-power bursts.
While supercap can deliver sustained power, the energy density (Wh/kg) is lower than electrochemical storage, so the system size required for multi-hour energy delivery makes sodium-ion the more economical choice for that use case. Each XEYAR project is engineered with the right chemistry for the duty cycle — power-dominant or energy-dominant — chosen per project.
Is XEYAR Supercapacitor BESS code-compliant for indoor or MURB installation?
Yes. Supercapacitor storage is classified as non-thermal-runaway, meeting NFPA 855, IBC, IFC, NEC Article 706, CEC, and CSA requirements for indoor and multi-unit residential deployment without dedicated fire suppression infrastructure.
This is the key regulatory advantage over LFP-based systems, which trigger fire-code restrictions in most high-rise, MURB, and enclosed-parking environments. The sealable, non-off-gassing enclosure is also permitted in occupied indoor spaces — including data centers, hospitals, and telecom shelters.
What certifications does XEYAR Supercapacitor BESS carry?
The full DC ESS boundary is certified under UL 9540 3rd Edition and UL 9540A Pass. Cell and module level certifications include UL 810A (capacitor standard), UL 1973 (energy storage), UL 1741 (PCS), UL 2202 (DCFC output), UL 2594 (Level 2 EVSE), IEC 62619, UN 38.3 transport classification, and CSA C22.2 for Canadian deployments.
Materials are non-hazardous and approved for unrestricted air transport — simplifying global logistics for GCC, MENA, and remote North American deployments.
What is the round-trip efficiency at the system level?
97%+ at the system level · 99.1% at the cell level. System-level efficiency includes losses in the PCS (power conversion system), DC bus, contactors, and CapMS overhead.
For comparison: LFP system-level RTE is typically 85–90%; lead-acid is 70–80%. The 7–12 percentage-point delta compounds dramatically over a 45-year design life — every kWh of cycled energy returns more usable energy from a XEYAR Supercapacitor system.
Ready to deploy the
safest, longest-lived energy storage on earth?
Every XEYAR Supercapacitor BESS project starts with a free engineering consultation. Share your site profile, peak-power profile, duty cycle, and grid service — our team will size the system for the lowest lifetime LCOS for your specific use case. Transparent math, zero oversizing, no climate-specific SKUs.