burkphoto Loc: High Point, NC

I have never bought an Apple device with less than 20% or more than 80% charge. Lithium Ion batteries last longest when stored at approximately 50% charge. They should never be left below 20% or above 80% charge for very long.

In fact, iPhones, iPads, and MacBooks will charge rapidly up to around 80%, then slow the rate of charge gradually until the device is full. Furthermore, they will "learn" your usage patterns and finish charging just before you typically use them on a daily basis.

I plug in my phone at night. It will charge to 80% and HOLD that charge until early morning, an hour or so before I typically get up. Then it will finish charging so it is at 100% when I usually need it. This is the sort of intelligent battery monitoring and charging that all devices should have. But few do!

jerryc41 Loc: Catskill Mts of NY

I don't recall any offhand but take a look here. We definitely need a replacement for lithium batteries.

https://www.google.com/search?q=lithium+camera+fires&oq=lithium+camera+fires&gs_lcrp=EgZjaHJvbWUyBggAEEUYOTIICAEQABgWGB4yCggCEAAYhgMYigUyCggDEAAYhgMYigUyCggEEAAYhgMYigUyCggFEAAYhgMYigUyCggGEAAYhgMYigUyBggHEEUYQNIBCDY0ODZqMGo0qAIAsAIA&sourceid=chrome&ie=UTF-8

gvarner Loc: Central Oregon Coast

Good answer. Several years ago my uncle's Honda sedan engine burst into flame. He only had it a couple weeks.

chasgroh Loc: Buena Park, CA

...yup, anecdotal and very rare instances are "reported" by the sky-is-falling media.

joer Loc: Colorado/Illinois

What is your source?

jerryc41 Loc: Catskill Mts of NY

Correct! All the batteries I've received have been at about the 50% point. You should never charge them to 100%.

jerryc41 Loc: Catskill Mts of NY

Yes, China has had serious problem with its electric cars bursting into flames. China doesn't build things very well. They are short on building codes and long on bribery. Roads and buildings are collapsing on a regular basis. New structures collapse, while those that are hundreds of years old remain standing.

https://eightify.app/summary/electric-vehicles/chinese-ev-explosion-90-of-car-makers-bankrupt#:~:text=Chinese%20EVs%20face%20safety%20concerns,issues%20with%20battery%20cooling%20systems.

https://www.google.com/search?q=building+collapses+in+china&oq=building+collapses+in+china&gs_lcrp=EgZjaHJvbWUyCQgAEEUYORiABDIICAEQABgWGB4yCAgCEAAYFhgeMggIAxAAGBYYHjIICAQQABgWGB4yCAgFEAAYFhgeMggIBhAAGBYYHjIICAcQABgWGB7SAQg2NjkxajBqNKgCALACAA&sourceid=chrome&ie=UTF-8

burkphoto Loc: High Point, NC

An Apple device will charge to 100% without damage, because it stops the charging at 80%, then drops the rate of charge dramatically when it continues. This keeps the cells cool and gradually tops off the charge to 100%, or until the user typically turns on the device. My phone is six years old and still takes 78% of original charge capacity. I leave it plugged in all night, every night. But I seldom discharge to below 25%.

Bruce T Loc: Michigan

Fantastic response.

xt2 Loc: British Columbia, Canada

There were no observed failures on my part, however, lithium-ion batteries have been known to overheat and fail. I am told that they are at their most vulnerable when being over-charged. The difference in scale and the power required to charge a vehicle lithium-ion battery vs. a wee camera version is self-evident. Cheers!

R.G. Loc: Scotland

Well, there's Jerrypedia for a start (see above) .

The internet isn't 100% reliable but with a bit of discernment and research it's hugely better than the MSM.

larryepage Loc: North Texas area

I am guessing that when a new device leaves the factory, the charge in most cases is probably somewhere between 80% and 100%. Transit time and time sitting on shelves in warehouses, stores, and distribution centers is going to result in shelf-life discharging down to 50%-80% or so. It would be silly for a manufacturer to ship a device from China or wherever with 40-50% charge, encounter delays, and arrive into the customer's hands with a fully depleted battery. There is a risk of damage to the battery, requiring immediate warranty replacement, and there is a customer satisfaction impact in not being able to push the "On" switch and have the thing power up right away.

There is no reason to charge any modern device to less thann 100%. Most of them don't even provide a means of managing the charge process with that level of detail. Every device I have slopes the charge rate when approaching full charge.

User ID

Why question his his source ? He mentions merely "thousands" of reports in China.

Anything measured in only a 4-digut quantity in China is very close to nothing at all. If that were in the UK or Mexico, then it would be a significant stat.

R.G. Loc: Scotland

According to one of Jerry's links above the figure is 19,000 last year alone. That's 19,000 potentially dangerous and potentially lethal fires. And that's just EVs.

larryepage Loc: North Texas area

I worked for a company that made 'home' computers. The computers worked, but they were designed as consumer products that could not be readily updated to keep up with a market that was rapidly becoming more capable and sophisticated. They ended up building computers to a completely overstated marketing forecast in anticipation of a perceived huge Christmas demand. That demand turned out to be real, just not for the company's now outdated product. The next spring, a news release and service bulletin were published stating that there was a significant fire danger around the computer, recalling product in the market for "repair" and exiting the home computer business. The repair consisted of putting a new label on the box and returning the computer to the owner. The huge inventory of computers that were never shipped were dumped into a big hole, run over a few times with a bulldozer, and covered with dirt. (The production planner for the home computer group came to work in our group and told us this story.) The company is still in business and thriving today.

The point is that companies will write whatever is necessary and say whatever is necessary to present themselves in the best possible light and save face in the marketplace. There was never anything wrong with any of those computers, but the public and stockholders will accept a material or manufacturing problem much more easily than they will accept a strategic error or a huge planning mistake. My comments about the -3 and -15 batteries are based on direct observation and face to face conversation with a knowledgeable person. And yes...the conversation could be just like the Nikon publications you read. But it doesn't seem much like something you would tell the public if not true.