Pure Water & Clean Energy
Bringing Clean Water To Every Corner On Earth
Pure Water & Clean Energy
Bringing Clean Water To Every Corner On Earth
UL 9540 certified, liquid-cooled battery energy storage — up to 3,086 kWh and 1,600 kW in a single 20-ft container.
ForeverPure supplies and integrates the PowerCombo series — a high-performance, all-in-one containerized battery energy storage system (BESS) that packs liquid-cooled LFP battery strings, power conversion, a grid controller, HVAC, and a complete fire-suppression package into a single 20-ft HQ ISO container. Every unit is factory-assembled and factory-tested, then delivered ready to connect — and scalable to multi-megawatt-hour installations by paralleling containers.
Battery energy storage is a safety-critical purchase. The PowerCombo system carries the full set of North American and international certifications that fire marshals, AHJs, insurers, and interconnection engineers ask for — each verified by an independent third party. Certificates and test reports are available for review on request.
The primary system-level safety certification for battery energy storage in North America.
Certified · cTUVus Mark TÜV Rheinland of North America · Certificate CU 72605233 0001 · issued January 2026Large-scale fire propagation (thermal runaway) test method
Battery Tested Test data available for AHJ reviewBatteries for stationary applications
Certified Battery string levelSafety of secondary lithium cells & batteries, industrial use
Certified Battery string levelLithium battery transport safety testing
Tested & Passed Transport safetyLithium batteries installed in cargo transport unit — shipping classification
Compliant International shippingEuropean conformity
Marked By TÜV RheinlandElectrical energy storage systems — performance & safety
Compliant Independent Technical Report by DNVStandard for the installation of stationary energy storage systems
Compliant Design Installation standardExplosion (deflagration) prevention systems
Report Available Third-party deflagration-protection engineering reportFire safety in the PowerCombo is engineered as defense in depth — prevent, detect, suppress, and vent. Inherently stable LFP chemistry, ±2.5 mV cell-level monitoring, and liquid cooling keep thermal events from starting. If a cell ever off-gasses, dedicated gas detectors catch it in seconds and a UL Listed panel orchestrates the response — clean-agent suppression, CFD-validated explosion-prevention ventilation, and a firefighter water connection. The explosion-prevention design is documented in a P.E.-signed NFPA 69 CFD modeling report (Atar Fire, LLC, Nov 2025), available with the full certification package for your AHJ, fire marshal, and insurer.
Dedicated hydrogen and carbon-monoxide detectors watch for battery off-gassing — the earliest signature of thermal runaway — and trigger ventilation and alarms before smoke or flame develops.
On gas detection, a combustible-concentration-reduction (CCR) system — exhaust fan plus makeup-air inlet — purges the enclosure. CFD fire-dynamics modeling verifies flammable gas stays below 25% of the lower flammability limit, the NFPA 69 design threshold.
On fire detection, an electronics-safe, residue-free clean agent floods the enclosure — suppressing fire in seconds without destroying the battery bay, PCS, or controls it protects.
A Listed detection-and-control panel supervises the gas detectors, releases suppression, sounds alarms, and executes equipment shutdown sequences — with dry contacts for site fire-alarm integration.
A factory-piped manual dry sprinkler system with an exterior fire-department connection lets responding crews flood the enclosure with water immediately — without opening a door.
Two standard North American models, both in a standard 20-ft HQ ISO container.
| Parameter | PowerCombo-20C2H1600K | PowerCombo-20C2H1120KLS |
|---|---|---|
| Rated energy capacity (BOL) | 3,086 kWh | 2,315 kWh (2,700 kWh variant available) |
| Rated / max AC power | 1,600 kW / 1,760 kW | 1,120 kW / 1,232 kW |
| Rated AC voltage | 690 V, 3W+PE, 50/60 Hz | 480 V, 3W+PE, 50/60 Hz |
| Battery chemistry | Lithium Iron Phosphate (LFP), 3.2 V / 314 Ah cells | |
| Cycle life | 8,000 cycles to 70% retention @ 0.5C, 25°C | |
| Battery configuration | 8 strings, 1P384S (385 kWh/string) | 8 strings, 1P288S (289 kWh/string) |
| Output quality | THDi < 3%, power factor −1 to +1 | |
| Thermal management | Liquid cooling system | |
| Fire suppression | FK-5-1-12 clean agent · UL Listed fire control panel · H₂/CO gas detection with NFPA 69 CCR explosion-prevention ventilation · manual dry-pipe sprinkler with fire-department connection | |
| Enclosure / environment | IP54 · −30°C to +50°C · 0–95% RH (non-condensing) · 2,000 m altitude without derating | |
| Dimensions (L×W×H) | 6,058 × 2,438 × 2,896 mm — standard 20-ft HQ ISO container | |
| System weight | 68,340 lbs / 31 t | 57,540 lbs / 26.1 t |
| Communications | Ethernet, Modbus TCP/IP · SCADA / third-party EMS integration | |
PCS, GridPoint Controller, power distribution, fire suppression, and liquid chiller integrated with the battery bay — one delivery, one crane lift, one interconnection.
Eight independent battery strings (UL 1973, IEC 62619) with one PCS per string — a fault in one string never takes down the container.
153.6 V / 314 Ah liquid-cooled packs with cell-level monitoring (±2.5 mV accuracy) and 5 A active balancing managed by the BMS.
Every pack presents its DC connections, manual service disconnect, and comms ports on the front face — string service without unracking hardware.
Reduce demand charges by storing energy during low-demand periods and discharging during peak hours.
Shift energy consumption to take advantage of lower time-of-use electricity rates and reduce overall energy costs.
Provide reliable emergency power for critical facilities when the grid goes down. Seamless switchover with no interruption.
Smooth solar and wind output and store excess generation for non-generation periods. Enables higher renewable penetration.
The GridPoint Controller supports grid-forming operation — anchor an islanded microgrid for communities, campuses, and desalination plants.
Fast-responding power with PF −1 to +1 for voltage support, frequency regulation, and flexibility services to the grid.
Pairing storage with water infrastructure? See our Solar Oasis solar-powered desalination systems and read our engineering team’s field notes on PV sizing and battery integration.
New to specifying storage? Start with our Containerized BESS Buyer’s Guide (2026) — sizing, UL 9540/NFPA 855 certification, realistic $/kWh budgets, and the ten questions to ask any vendor.
UL 9540 certification by TÜV Rheinland, DNV technical report, UL 9540A test data, and an NFPA 69 engineering report — we hand your AHJ and insurer a complete documentation package, not promises.
ForeverPure has delivered 8,000+ water and energy systems to 40+ countries since 1997 — including solar-powered desalination plants where storage is mission-critical.
Every container is fully assembled, wired, and function-tested before it ships — commissioning on site is measured in days, not months.
Equipment leasing, loans, and project financing structures for C&I and municipal buyers — see our financing options.
Yes. The PowerCombo containerized BESS is certified to ANSI/CAN/UL 9540:2023 for the US and Canada by TÜV Rheinland of North America (cTUVus mark, certificate CU 72605233 0001, issued January 2026). Battery strings are additionally certified to UL 1973 and IEC 62619 with UL 9540A fire propagation test data and UN 38.3 transport testing. Certification documents are available for AHJ and engineering review on request.
Fire protection is layered. Dedicated hydrogen and carbon-monoxide gas detectors sense battery off-gassing at the earliest stage and trigger a combustible-concentration-reduction (CCR) ventilation system that CFD modeling verifies keeps flammable gas below 25% of the lower flammability limit, per NFPA 69. A UL Listed fire control panel supervises detection, alarms, and shutdowns; an FK-5-1-12 clean-agent system suppresses fire without damaging equipment; and a factory-piped manual dry-pipe sprinkler with an exterior fire-department connection gives responding crews immediate water access. The explosion-prevention design is documented in a P.E.-signed NFPA 69 CFD engineering report, and the system is designed for NFPA 855 installations.
A containerized ESS packages battery storage, power conversion, thermal management, fire suppression, and controls inside a weatherproof shipping container for turnkey deployment. The PowerCombo series delivers up to 3,086 kWh and 1,600 kW from a single 20-ft HQ ISO container using liquid-cooled LFP battery strings.
Lithium Iron Phosphate (LFP) cells rated 3.2 V / 314 Ah, with a cycle life of 8,000 cycles to 70% capacity retention at 0.5C and 25°C. LFP chemistry is favored for stationary storage because of its thermal stability and long service life.
Peak shaving and demand management, time-of-use load shifting, backup power, renewable energy smoothing for solar and wind, voltage and frequency support, and microgrid construction. The GridPoint Controller supports time-of-use, peak shaving, flexibility service, renewable smoothing, and grid-forming operating modes.
Capacity is engineered to your load profile and runtime requirements, from a single container to multi-container installations. Because each ESS is custom-configured, pricing is provided via Request-for-Quote, and financing options are available.
Send us your load profile, target runtime, and interconnection voltage — our engineers will configure a certified containerized BESS with budget pricing, and provide the full certification package for your AHJ and insurer.
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