Saft (TotalEnergies) · utility-scale
Saft (TotalEnergies) Intensium Flex (I-Flex) DC
shipping20 ft containerDC blockliquid-cooledLFPBNEF Tier 1
Everything below comes from what Saft (TotalEnergies) publishes about the Intensium Flex (I-Flex) DC: the datasheet, the product page and press releases. Where a figure is not published, the field says so — we do not estimate.
Variants
Energy figures are nominal (beginning of life) as published by the manufacturer. One model, several duration options — the same enclosure with different power ratings.
| Variants | Energy | Power | Duration |
|---|---|---|---|
| I-Flex 3.4 MWh | 3.4 MWh | not published | not published |
| I-Flex 4.3 MWh | 4.3 MWh | not published | not published |
| I-Flex 5.1 MWh | 5.1 MWh | not published | not published |
Specifications
| Cell chemistry | LFP |
|---|---|
| Cell capacity | not published |
| Cell configuration | not published |
| Cell supplier | not published |
| Form factor | 20 ft container |
| Block type | DC block |
| PCS integrated | no |
| DC voltage | not published |
| Cooling | liquid-cooled |
| Ingress protection | not published |
| Operating temperature | not published |
| Dimensions (L × W × H) | not published |
| Weight | not published |
| Energy density | not published |
| Round-trip efficiency | not published |
| Cycle life | not published |
| Calendar life | not published |
| Warranty | not published |
| Fire suppression | holistic safety concept to prevent fire, toxic gas and explosion (details in datasheet, not retrievable); LSFT passed |
| Generation | 2025 (production from end 2025) |
| Announced | 2025-05 |
Certifications
UL 9540A (ANSI/CAN/UL 9540A:2026 large-scale fire test by UL Solutions, April 2026)
Key facts
- Liquid-cooled LFP DC container rated 3.4, 4.3 or 5.1 MWh; configurations 2–8 h; up to 300% daily energy throughput (claim)
- Housed in a standard ISO container (size not stated); back-to-back and side-by-side installation; compatible with multiple PCS; AC version with integrated conversion announced for 2026
- Passed large-scale fire testing per ANSI/CAN/UL 9540A:2026 with adjacent containers 15 cm apart (no propagation)
- Assembled in Saft hubs in China and the US; >1 GWh firm orders at launch; I-Sight cloud monitoring
- kW rating, DC voltage, dimensions, weight, RTE, cycle life and cell supplier not published on accessible pages; the DC datasheet download endpoint on saft.com returned HTTP 504 during this survey
What Saft (TotalEnergies) does not publish for this model
These fields are empty because no public datasheet or release states them. That is information too: ask for these numbers before you shortlist.
Cell capacityCell configurationCell supplierDC voltageIngress protectionOperating temperatureDimensions (L × W × H)WeightEnergy densityRound-trip efficiencyCycle lifeCalendar lifeWarranty
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Sourcing quote for Saft (TotalEnergies) Intensium Flex (I-Flex) DC
Coloprice is published by Dream View, a China-sourcing company. For commercial-scale projects we buy BESS containers factory-direct — verified manufacturer, certification review, pre-shipment inspection, export and freight — for a flat 10% fee.
Sources: Saft — Intensium Energy Storage Systems (I-Flex page) · Saft press release — Intensium Flex launch (2025-05-07) · Saft press release — I-Flex large-scale fire testing (2026-06-25)