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How much do you let the battery go down by before recharging?

scotthunter2
over 3 years ago

I have a 7S, should I be recharging when battery life drops below 20% or is it ok to let it run below 10%? Should the battery be treated like the iPhone battery? Obviously this is more an issue with the 7S as the recharging is more frequent.

  • 0 over 3 years ago in reply to Former Member

    So charging it at 40% and only charging it to 80% means you will have to charge it close to 3 times the number of times as you would charging it at 10% to 100%.

    I'm just going to charge mine at 10% or lower, and fully charge it, because I think less number of times charging also equals better battery longevity.

    No, the most important thing is the state in which it is loaded. The chemical processes - degradation of chemistry - accelerates above and below the mentioned limits of 40-80%. This has a much greater influence. If you want to save your battery, stay within these limits. Even if you have to reload more often.

    The battery is therefore much more stressed when charged outside these limits. Even if you have to recharge less often. If you stay within these limits of 40-80%, and do not expose the battery to a large thermal load, you can achieve about 1.2 to 1.8 times more charge cycles than specified.

  • Former Member
    0 Former Member over 3 years ago in reply to bluefish

    "If you stay within these limits of 40-80%, and do not expose the battery to a large thermal load, you can achieve about 1.2 to 1.8 times more charge cycles than specified."

    yeah... and 3 times as many charge cycles.

    One of the main reasons for getting this device is the insane battery life, and not 40% of insane battery life. Do you really think people are going to spend a thousand bucks on a device and they can only charge it from 40 to 80 percent?

    It tells you when the battery is getting low, and the manual says to fully charge it, so that is exactly what I am going to do.

    You can charge yours any which way you like.

  • 0 over 3 years ago in reply to Former Member
    yeah... and 3 times as many charge cycles.

    No, from 40-80% is not even half a charge cycle.

    Do you really think people are going to spend a thousand bucks on a device and they can only charge it from 40 to 80 percent?

    What I think how others charge it is completely irrelevant. Here the question was about what is the most battery friendly.

    No one was talking about only being able to charge between 40 and 80%.
    Connecting the chemical decay of the battery chemistry with how much you paid for the watch confuses me a bit.

    If you want to save the battery, charge it between 40 and 80%. Even if it must take place more often.

    Do you not want to charge so often and do not care about the battery, let it discharge completely and then make it full again.

  • 0 over 3 years ago in reply to Former Member

    I don't know why are you arguing?!  We are talking here how to prolong battery life not how much watch cost. Just to quote you "You can charge yours any which way you like" ;)

    And no, charging from 50 to 55 is not considered as one charging cycle. In general, li-ion likes to be charged a bit occasionally than be fully discharged and charged.

    p.s.

    While I was writing, bluefish already answered :)

  • 0 over 3 years ago in reply to Z
    Z said:
    While I was writing, bluefish already answered :)

    Sorry FlushedWink

  • 0 over 3 years ago in reply to bluefish

    No problem, lol. Forgot to add, solar charging is good for li-ion, it's adding a bit or slowing down discharge.

    Most people remember old, nickel-cadmium batteries, those had a memory effect. Memory effect is when battery is charged at, let's say 50% and after that, capacity drops to half. From 50 - 100% To avoid that, such batteries should be fully discharged/charged.

  • 0 over 3 years ago

    I'll charge stuff whenever I feel like it.  Which is anywhere from 50-90% all the way back up to max.  I don't listen to all of these battery chemistry explainations

  • 0 over 3 years ago in reply to ajwms2222

    We are so thankful for your valuable contribution to the discussion Smiley

  • Former Member
    0 Former Member over 3 years ago

    This thread is funny.

    I had a fenix ever since the first one came out. I think I had that one for 3 or 4 years, and it charged just as good when I gave it to a friend after getting a new one. I always charged it fully when it got to under 10% (when the device tells you it's low). These things are built like tanks, and are made to last years under extreme conditions.

    These are not apple watches that you have to charge every day... lol, and I ain't no chemist like some of you who seem to have a masters degrees in, but if you just charge the watch according to the instructions, you will get years and years out of it.

    Ain't like most of us aren't going to get the fenix 8 when it comes out anyway... hahaha

  • 0 over 3 years ago in reply to Former Member
    if you just charge the watch according to the instructions, you will get years and years out of it.

    ...leaving you free to focus on the more important things in life.