Not limited to large capacity, but to low-density applications where size isn't critical. Also anywhere that very cold weather is likely

So no wearables, phones, etc... But more stationary applications.

But solar mesh nodes (home or agricultural/industrial), off-grid pumps, power banks (camping style), home solar storage, lead acid car battery replacements, weather stations, electric toothbrushes, lights/lanterns, light tools like laser levels, toys and RC cars/boats, etc... Things that traditionally used alkaline batteries (often recently switching to Lithium for recharging) are often good applications.