PW3: Do Adverts run down battery?

[JSWolf]

Originally Posted by John F

What is considered "high brightness" on a Kindle?

Depends on which Kindle it is.

[Deskisamess]

I've always assumed the higher the brightness of the front light on my various Kindles, the more battery power used. I also use a somewhat large font, and read quickly, so more page turns, which also uses more battery life.

But I've never stressed over battery life...I use my devices in a manner that suits me, and plug them in when necessary. They "serve" me, not the other way around. Why make adjustments to how I use a device, to eek out another few minutes/hours of battery life?

Seems silly.

[John F]

Originally Posted by JSWolf

Depends on which Kindle it is.

I'm trying to get at how common, or what is, a "high brightness"? From Harry's post, I would be surprised if a High Brightness used more battery than say a high CPU utilization, or high wifi usage, or high Bluetooth usage.

[HarryT]

Having the light on maximum brightness for an hour uses way more battery power than having WiFi on for an hour or reading for an hour. Try it for yourself.

[JSWolf]

Originally Posted by HarryT

Having the light on maximum brightness for an hour uses way more battery power than having WiFi on for an hour or reading for an hour. Try it for yourself.

How much more battery does WiFi use when on and trying to find a network it knows?

[ilovejedd]

Originally Posted by JSWolf

How much more battery does WiFi use when on and trying to find a network it knows?

Not much, I reckon. I'm lax at enabling airplane mode and even with no wifi at the office, there doesn't appear to be a noticeable impact on battery life (at least after enabling the Prevent OTA Updates hack in KUAL).

[Quoth]

I don't know what it was, adverts or a faulty book, but since swapping kindles and disabling "Offers" the battery on the bad one is fine, about 80% after nearly a week of use inc. WiFi loading of Dictionaries. The newer one is fine too with the user's books reloaded (via backups imported to Calibre to save downloading from Amazon).

The only unexpected thing about swapping (via re-registering) was the fact the Amazon supplied dictionaries vanished even though bought books had to be manually deleted (mostly copied via USB because we both "Download to PC for USB Transfer" on Amazon to ensure backups).

A mystery. I'm glad I didn't rush off and order a battery. Neither of us uses backlight and I'd use WiFi more (to look up a place in a book in Wikipedia). The owner of the PW3 that had the battery issue never turns on WiFi.

[BookCat]

Originally Posted by JSWolf

I don't know how your house is setup in regards to your light fixtures. But part of your light problem could be the light bulbs. Try a daylight LED bulb. You get a much brighter light then you do with a warm white type of bulb. I replaced two warm white bulbs in the bathroom fixture with a single daylight LED bulb (60watt type) and it was much brighter then the two warm white bulbs.

My main lounge has a chandelier style fitting where the bulbs direct light towards the ceiling (inherited from the former owner). I have two incandescent candle-shaped 60 watt bulbs in it. My prefered set-up is a single hanging pendulum 100watt incandescent bulb (which directs light more generally) with no shade. This gives a whiter, brighter light. I find leds a bit too stark; though I do have an led desk lamp.

I don't use eco-bulbs because they are dangerous and difficult to dispose of in the uk.

[murraypaul]

Originally Posted by BookCat

I don't use eco-bulbs because they are dangerous and difficult to dispose of in the uk.

What?
You might need to justify that FUD just a little bit.
How are eco bulbs dangerous?

If it is the mercury issue, this is the Which view on that:

I’ve heard that energy-saving bulbs contain mercury. Should I be worried?
No. LEDs and halogens don’t contain any mercury at all, and the small amount used in modern CFLs is very low. All the CFLs we tested were well within safety limits.

[DuckieTigger]

Originally Posted by murraypaul

What?
You might need to justify that FUD just a little bit.
How are eco bulbs dangerous?

If it is the mercury issue, this is the Which view on that:

The issue is not that they are dangerous to use, but that you are still not supposed to simply discard them in your regular trash. Not everybody follows that. I am guilty myself of throwing my empty batteries, for example, in the trash at home.

[haertig]

You can't just blame screen brightness and font size for battery drain. There also are those silly authors who use full colons when a semi-colon would do...

[BookCat]

Originally Posted by murraypaul

What?
You might need to justify that FUD just a little bit.
How are eco bulbs dangerous?

If it is the mercury issue, this is the Which view on that:

Apart from the mercury issue, which I think IS an issue compared to incandescent bulbs, it's the disposal. In the UK, it's illegal to put them in the general rubbish and, as far as I know, they're supposed to be taken to particular shops. A friend of mine said that the shop which sold them will have them back, but according to (I think it's called WEEE legislation) they should be taken to official council collection dumps to be disposed of properly.

I have several CFLs in a drawer in the kitchen which the prior owners had in the house. One of the first things I did was to replace them with harmless incandescents.

Given my preference for a single, bare, hanging bulb, the light from CFLs is horrid, compared to that of a 100watt incandescent. I have to buy them online, because their sale is banned in shops, but would rather do this than clear up if a CFL broke.

[jhowell]

Originally Posted by BookCat

Given my preference for a single, bare, hanging bulb, the light from CFLs is horrid, compared to that of a 100watt incandescent. I have to buy them online, because their sale is banned in shops, but would rather do this than clear up if a CFL broke.

LEDs have pretty much replaced incandescent and CFL around here. Have you considered those?

[BookCat]

Originally Posted by jhowell

LEDs have pretty much replaced incandescent and CFL around here. Have you considered those?

The light is too harsh and too much exposure to LEDs is apparently a contributor to macular degeneration. And I LIKE incandescent light.

[murraypaul]

Originally Posted by BookCat

Apart from the mercury issue, which I think IS an issue compared to incandescent bulbs

I think I'm going to believe Which rather than you, no offense.

it's the disposal. In the UK, it's illegal to put them in the general rubbish and, as far as I know, they're supposed to be taken to particular shops. A friend of mine said that the shop which sold them will have them back, but according to (I think it's called WEEE legislation) they should be taken to official council collection dumps to be disposed of properly.

Stick them in a box, next time you have to go to the tip, take them with you.

I have several CFLs in a drawer in the kitchen which the prior owners had in the house. One of the first things I did was to replace them with harmless incandescents.

They are all harmless.
You have replaced them with bulbs that cannot be recycled, and use much more power.

Given my preference for a single, bare, hanging bulb

Btw, that is the exact opposite to the lighting situation suggested by the macular degeneration society.

https://www.macularsociety.org/sites...13%20JAN17.pdf

Tips for effective lighting
• Have several lights in a room rather than one bright light and position them to get an even spread of light with no dark corners.
• Shade bulbs so that they do not shine into your eyes. Check the maximum bulb rating for light shades to make sure you use the correct bulbs.
• Round paper shades are good at diffusing light in the room.
• Use uplighters to bounce light onto the ceiling and back into the room.