Mariano3130,
Completely agree. Battery tech is getting better and better, but heat is always associated with cell degradation, either by fast charging or discharging. I also am into RC, have built planes, boats, etc from scratch including putting together all the electronics and even wiring up my own battery packs, and have chargers that can charge multiple battery chemistries with temp probes, etc. And as smart as a charger is nowadays, heat is still going to be created by the rapid charge/discharge cycle. And no cell is going to last as long under those circumstances, and we all use are phones so much today that generally a charge a day is needed. Thats a minimum of 365 X's a year, so rechargeable cells are going to die, which is why i want a replaceable battery pack. I do not intend on swapping cells every day, but its nice to know my phone itself isnt obsolete in a year or less because of the battery. I've stated before that what a lot of people dont understand also is that even though your battery is charging to "100%" doesnt mean it still has the same voltage/amperage in the cells as when new, which will affect how your device performs. A new battery can make an older device much more responsive, work better because the new cells actually are putting out the current the board was engineered to operate with in the first place.