Yowza! I see you're in a hotter part of CA. At this rate, I think you'll be down to 8 bars by mid-July 2018, if not well before.
Out of curiosity, what's the build month? It's on the driver's side door sticker.
Build month: Nov 2015
Only 10 miles on the car during the ~5 months between manufacture and lease. Do not recall the state of charge when we took possession of the car. Would have only been exposed to cool winter months at these latitudes in the northern hemisphere during that time.
Should add that the Leaf could have been down to 9 bars for at least the last few months. The wife is no enthusiast and just drives the car and did not know how the bars worked; I rarely drive the Leaf.
I had no reason to suspect advanced battery deterioration until she pointed out the decreased driving range a few weeks back then caught the 9 bars.
Anticipated some battery degradation, but never guessed we would have the battery replaced during the 3-year lease, I'm guessing (8 bars) could be in the next few months, but with these cool temperatures, may not happen until spring/summer.
'19 Model 3 SR+ (own), '19 Leaf SV (leased), '12 Plug-in Prius (sold 3/19), '16 Leaf SV (prior lease), 11.43kW Solar PV (16MWh/yr real production), 20.5 SEER/13.0 HSPF ducted air-source heat pump, 3.70 UEF heat pump water heater, Induction Cooktop