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Calculations are for reference and educational use only. Verify against official tariffs and regulations.

Batteries
Lithium Battery
Watt-Hour
Section II Limits
Battery Vehicle

EDI Fuel Hazmat Cross Border LTL Air Cargo General

Tools ›Hazmat ›Watt-hour

Watt-hour calculator

Convert a spec sheet into Wh and g Li for §173.185 / PI 965–970.

Battery

Chemistry

Nominal voltage (V/cell)Capacity

Cells per batterySeries count (S)

Computed

Wh per cell

12.6Wh

Wh per battery

50.3Wh

g Li per cell

— n/a (not Li-metal)

g Li per battery

— n/a

Regulation preview

Cell ≤ 20 Wh12.6 Wh
Battery ≤ 100 Wh50.3 Wh
BandSection II

Pass these values into the Lithium Battery Decision Tree to get the full label / mark / DGD checklist.

Formulas

Wh = V × Ah

Battery Wh = cell Wh × series count

g Li (rule of thumb) = rated Ah × 0.3 (Li-metal only)

Sources

49 CFR §173.185 · IATA DGR PI 965–970 · UN Manual of Tests and Criteria 38.3