How to INCREASE Battery Capacity

Question

Just drop the advertising - I know that battery capacity  varies, and that the capacity of the phone battery - regardless of models, will degrade as the phone is used.
I contest the "specialists" to provide some straight simple guidelines to how one can treat a battery to increase the capacity.
That the layers gets closer and short-curcuits is a known reason. So, exposure to heat will make the substance that keep the layers apart into gas that escapes the battery. Now how can such a battery be fixed? In old days with NiCd we could freeze the battery to -36C, that would make the iodine to solid. if iodine is still used, this will still work. Other semiconductors needed more than -100C to regain state - but with access to liquid Nitrogen, that was fully possible. Maybe Ni is not so common, but freon is, and LPG (Butane/Propane liquified). A home freezer can at times go as low as -38C. 
So, can charging in heat / cold change the capacity of the battery?
Other: If I completely drain the battery between every charge - will that improve it?
If I start to recharge it when it is 80% of capacity, and disconnect immediately and use everything, Bluetooth, WLAN - to drain it to 80% and the recharge - can I restore the good old capacity? 
if the battery degrades to 10% of capacity, is it possible to restore it? How? 
Don't change anything that works.

Answer 1

That, and I've been reading to not constantly charge it, or leave it in at 100%. It can be charged too much from what I've seen. I've had mine since 2006 almost 2 years, and till recently left it charging all the time. Not sure that's been a good idea. This is Battery University website information...
gure 1: Permanent capacity loss of lithium-ion as a function of temperature and charge level.
High charge levels and elevated temperatures hasten permanent capacity loss. Improvements in chemistry have increased the storage performance of lithium-ion batteries.
The mentioning of limited service life on lithium-ion has caused concern in the battery industry and I will need to add some clarifications. Let me explain:
If someone asks how long we humans live, we would soon find out that the longevity varies according to life style and living conditions that exist in different countries. Similar conditions exist with the batteries, lithium-ion in particular. Since BatteryUniversity bases its information on the feedback from users as opposed to scientific information derived from a research lab, longevity results may differ from manufacturer' specifications. Let's briefly look at the various living conditions of the lithium-ion battery.
The worst condition is keeping a fully charged battery at elevated temperatures, which is the case with running laptop batteries. If used on main power, the battery inside a laptop will only last for 12-18 months. I must hasten to explain that the pack does not die suddenly but begins with reduced run-times.
The voltage level to which the cells are charged also plays an important role to longevity. For safety reasons, most lithium-ion cannot exceed 4.20 volts per cell. While a higher voltage boosts capacity, the disadvantage is lower cycle life. Figure 2 shows the cycle life as a function of charge voltage.