The 30kWh battery warranty is 8 years/100,000 miles (from the original warranty information booklet):
LITHIUM-ION BATTERY CAPACITY COVERAGE
In addition to the lithium-ion Battery Coverage for defects in materials or workmanship, the lithium- ion battery is also warranted against capacity loss below nine bars of capacity as shown on the vehicle’s battery capacity level gauge for a period of 60 months or 60,000 miles, for vehicles equipped with the 24 kWh battery or 96 months or 100,000 miles for vehicles equipped with the 30 kWh battery, whichever comes first.
This warranty covers any repairs needed to return battery capacity to a level of nine remaining bars on the vehicle’s battery capacity level gauge. If possible, the lithium-ion battery components will be repaired or replaced, and the original lithium- ion battery will be returned to the vehicle. If nec- essary, the lithium-ion battery will be replaced with either a new or remanufactured lithium-ion battery. Any repair or replacement made under this Lithium-Ion Battery Capacity Coverage may not return your lithium-ion battery to an “as new” con- dition with all 12 battery capacity bars, but it will provide the vehicle with a capacity level of nine bars or more on the battery capacity level gauge.
So 30kWh Leaf owners in warm climates may be getting their battery replaced 3-4 times, gratis!
'19 Model 3 SR+, '19 Leaf SV, '12 Plug-in Prius (sold 3/19), '16 Leaf SV (prior lease), 11.43kW Solar PV (16MWh/yr prod.), 20.5 SEER/13.0 HSPF ducted air-source HP, 3.70 UEF HPWH, Induction Cooktop, Variable Speed Pool Pump, Battery powered yard tools