The H3AF from SES AI is an NMC, anode-free pouch cell with 3.1 Ah typical capacity, 11.8 Wh typical energy, and a nominal voltage of 3.82 V. Its gravimetric energy density is specified at 425 Wh/kg at 25°C, 100% depth of discharge, and C/5. The cell weighs 27.8 ± 1.0 g and measures 71.5 ± 1.0 mm long, 48.5 ± 0.5 mm wide, and 3.3 ± 0.2 mm thick at 0% state of charge.
The H3AF is specified for a 20C maximum continuous discharge rate and a 32C maximum pulse at 100% state of charge, 25°C, for 10 seconds. Its stated discharge temperature window spans -30 to 60°C, while charging is specified from 0 to 45°C. Brochure data also covers charging profiles from 0.33C to 3C, discharge behavior at 45°C, 25°C, 0°C, and -30°C, and cycle-life testing under both 150 psi and 0 psi conditions. Under the stated +0.2C/-1C test protocol, the cell exceeds 125 cycles to 80% SOH at 25°C with 150 psi applied pressure, while the 0 psi specification is more than 10 cycles. The brochure notes that discharge-rate capability testing is still in progress.
| Capacity: | 3.1 Ah typical |
| Energy: | 11.8 Wh typical |
| Nominal voltage: | 3.82 V |
| Charge voltage: | 4.3 V |
| Discharge voltage: | 2.5 V |
| Typical charge rate: | C/5 |
| Maximum continuous discharge rate: | 20C |
| Maximum pulse discharge: | 32C at 100% SoC, 25°C, 10 s |
| Discharge temperature: | -30 to 60°C |
| Charge temperature: | 0 to 45°C |
| AC internal resistance: | ≤6 mΩ, 1 kHz at 30% SoC |
| DC internal resistance: | ≤15 mΩ, 50% SoC, 3C/10 s |
| Weight: | 27.8 ± 1.0 g |
| Packaging: | Pouch |
| Chemistry: | NMC / Anode Free |
| Gravimetric energy density: | 425 Wh/kg at 25°C, 100% DoD, C/5 |
| Cycle life at 150 psi: | >125 cycles at 25°C to 80% SOH, +0.2C/-1C, 2.5–4.3 V |
| Cycle life at 0 psi: | >10 cycles at 25°C to 80% SOH, +0.2C/-1C, 2.5–4.3 V |
| Certification: | UN38.3 |
| Length: | 71.5 ± 1.0 mm |
| Width: | 48.5 ± 0.5 mm |
| Thickness: | 3.3 ± 0.2 mm at 0% SoC |
