Monolith pack

Zero ZF17.3

One bonded pack, not user-swappable. Largest Zero pack; native on DSR/X, unlockable on the FST street bikes (S/F, SR/F, SR/S).

Last updated: July 3, 2026

15.2 kWh usable · 17.3 kWh maxscaled to the 17.3 kWh flagship

Max capacity

17.3 kWh

Usable (nominal)

15.2 kWh

Form factor

Monolith pack

Weight

≈ 63.5 kg (140 lb)

Energy density

272 Wh/kg

Model years

2022-2025

Cells

Farasis NMC · 28S

Pack weight is an approximate figure — sourced from Same 17.3 kWh monolith hardware as ZF15.6 (15.6 is a software-limited unlock) — inferred equal. Zero doesn't publish most pack weights, so these are cross-checked against reviews and curb-weight deltas. Energy density = max capacity ÷ pack weight.