It doesn't really matter in the grand scheme of things because batteries are going to lose their maximum battery life over the course of time REGARDLESS of how you use them. Most people aren't going to keep their device for 5-6 years. Most "power users" update phones every 1-2 years, and with a device that already lasts you well over a day, babying your battery simply to preserve an extra hour or two (after a year and a half of use) is pointless & counter productive anyway IMO.
As for the cost, that's my bad....I'm used to having a phone with a replaceable battery, and stock OEM Samsung batteries have always been between 15-20 dollars.
S5 tap'n
I think you and I are basically in agreement, but there are slight nuances of difference of opinion. I agree that these LiPO batteries do lose capacity to hold a charge over time. It's a known fact that they have a shelf-life "regardless" of whether they are being used and charged or just sitting in a warehouse somewhere waiting to be put into service. They will only hold their rated capacity (whatever they test at), off the manufacturing production line, and immediately begin degrading over time.
I also agree that most people aren't going to keep their devices for 5-6 years, but here's where we have a slight difference of opinion. I have stood in Verizon Phone Center Stores and watched as people walked in with phones that were manufactured 3, 4, even 5 years ago and were just now trading them in for new ones, Some were hand-me-downs from dad/mom to son/daughter, some were hard-core "use till it dies" economy conscious people, and some were just people who didn't feel the need (until now), to replace their "old faithful". Those phones, most of which had LI batteries (not necessarily LiPO), were still in service and for the most part the batteries had lasted. Take those same batteries and run them through daily regimen of "Turbo Charging", and they would likely have reached a state of unusable (well below 80% of capacity), in 2 years.
So why am I preaching so heavily about preserving the batteries for the long-haul? Well, clearly it's not aimed at you
@cr6 , nor is it at perhaps a large percentage of the members here who are to be considered "power users", and those who will, like you and I, replace their phones in that 1-2 year period (just replaced my Droid MAXX with the Droid Turbo), and those who may not notice an appreciable reduction in the lifespan of the battery over that timeframe. Still, even without "Turbo Charging" of my Droid MAXX, I DID in fact notice an appreciable reduction in the daily operation and runtime of the battery in that phone, and in just the one year (most notably in the last 3 months).
LiPO batteries are a very strange beast because they are being used in a very narrow range of "stable operation" between being too low a voltage and too high a voltage, either of which can result in catastrophic failure. Because of their very nature - that being a volatile chemical composition in an electrical application (electrochemical reaction), they must be handled more carefully than almost any other battery we are all used to, such as Lead-Acid (car battery, portable power tools, etc.), Nickel-Cadmium (portable power tools, portable electronics, etc.), Nickel Metal-Hydride (portable power tools, electronics, etc.).
Why have we not been more aware of the issues surrounding these batteries and why have we become so complacent regarding our charging practices? What has happened is that they have been so well managed by the charging circuitry in the devices that they are now so commonly found in (phones, tablets, laptops, power tools, etc.), that we are really blind (or desensitized), to the tiny incendiary device we're all carrying around in our pockets. Until the intervention of "Turbo charging", or more appropriately called Qualcomm Quick Charge 2.0, we all had to suffer with slow charging for two very important reasons.
First, charging faster (which has always been an option but was shy'd away from by manufacturers), causes the battery to heat up and heat in these batteries (like in most anything), accelerates the decomposition or degradation of the device. Manufacturers have struggled with giving us everything we've been asking for...a slimmer, lighter phone that will charge quickly and last throughout the day. This has been perhaps the MAIN reason why charging has until now, been done at a very low rate, typically 750mAh or so. Second, charging faster, if not done under very careful monitoring and with sufficient protections in place to monitor battery voltage, temperature and resistance, can result in catastrophic failure, with potentially devastating consequences including possible property damage or bodily harm.
What changed to bring in Turbo Charging and why wasn't it here 2, 3 or more years ago? Well, what has happened is that the technology to "monitor" these batteries safely during automated and unattended charging has advanced to the point where it reached a profitable and efficient price-point ($34.99
Motorola Turbo Charger ), and so we now have "Turbo Charging". Although Turbo Charging is now entering the mainstream, that does NOT mean it's any less damaging to the battery than doing the same thing completely manually as has been the way of the RC crowd for years. It simply means that it's now being handled by the circuitry in such a manner that the risks to property or person have been reduced to below statistically significant levels and it's now considered "safe" to do so completely unattended such as overnight on your flammable wooden nightstand next to the highly flammable curtains and bedding (something that RC people would never responsibly do under manual rapid charging processes).
So to say that the rapid (*or quick/turbo), charging of these batteries does no appreciable harm to the batteries, and that "it really doesn't matter in the grand scheme of things", or to imply that because the manufacturer is now supplying it with the phone is proof it's no more harmful than the earlier low-rate chargers which came with last-year's phone is not really a fair statement, though I understand and agree with your reasoning and purpose for the statement. It's been proven through countless thousands and thousands of hours of lab testing that charging these batteries faster does in fact not just significantly, but dramatically reduce it's lifespan (time to "end of life", typically 80% of original rated capacity).
From Battery University;
Lithium-ion suffers from stress when exposed to heat, so does keeping a cell at a high charge voltage. A battery dwelling above 30°C (86°F) is considered
elevated temperature and for most Li-ion, a voltage above 4.10V/cell is deemed as
high voltage. Exposing the battery to high temperature and dwelling in a full state-of-charge for an extended time can be more stressful than cycling. Table 3 demonstrates capacity loss as a function of temperature and SoC.
Batteries are also exposed to elevated temperature when charging on wireless chargers [edit; and also now with 'Turbo Charging'. I'll prove that in a later posting.]. The energy transfer from a charging mat to a portable device is 70 to 80 percent and the remaining 20 to 30 percent is lost mostly in heat that is transferred to the battery through the mat. We keep in mind that the mat will cool down once the battery is fully charged. Read more about
Charging Without Wires.
Avoid charging a battery faster than 1C; a more moderate charge rate of 0.7C is preferred. Manufacturers of electric powertrains are concerned about super-fast charging of 20 minutes and less. Similarly, harsh discharges should be avoided as also this also adds to battery stress. Read more about
Charging Lithium-ion and
Ultra-fast Chargers.
So what I am saying in a nutshell is, if you want to continue to get the most daily usable operation out of your battery and for the longest time (i.e. if you plan to keep this phone for more than perhaps a year), you would benefit by only doing "Turbo Charging" when your battery is low, and you need that rapid boost to get you through an extended period of time where you won't have access to a USB power source. Otherwise, I recommend using the STOCK Motorola USB Charging Cable and plug into a USB port on a PC, using an earlier version of a "Wall-Wart", such as the one that may have come with your last phone, the new dual-purpose USB home outlet adapters, the USB Accessory port that's on most newer car consoles, a USB Charger adapter for the 12 Volt Accessory port in a car, or similar adapters, or that nifty portable power pack that you'll get for Christmas this year (or possibly got last), and toss the "Turbo Charger" in your back-pack, bag, car console or glove compartment, so you have it with you for those infrequent quick boost needs.
Luckily my husband prefers the Droid Qi for my old Maxx, as all of my old Moto chargers have gone with the phones 
)