3 ms·

The hope is to force it to charge slower. Fast charging all the time shortens the battery life.

Dylan16807 4y ago
> Fast charging all the time shortens the battery life. How much? It's a widespread claim but without specific numbers it's not very helpful, and there are suggestions that the numbers are pretty small. Limiting max charge, on the other hand, has known strong effects.
- sillystuff 4y ago
  > Limiting max charge, on the other hand, has known strong effects. Yes, and you used to be able to do that on a rooted android phone. But, Google required the removal of debugfs in recent android versions, so need to run a custom kernel too now to get back that functionality. Maximum charge, and percent charge where charging begins should be user accessible settings on any device with a lithium ion battery. Charging rate should also be a user accessible setting. The cable idea is just a hacky work-around for crappy software, that addresses one of the reasons lithium ion batteries prematurely fail, and doesn't require modifying the device to be charged.
  - Dylan16807 4y ago
    Charge control should be standard, but at least samsung puts in the option for 85% charge.
- Robotbeat 4y ago
  Well if you do it every time at like 2-3C, you’re talking maybe 500 cycles compared to 1000 cycles at a slower charge rate. Depends on other stuff, too. Depth of discharge and max charge voltage are both even larger effects, but it still matters. (Knowing the exact chemistry of your phone’s battery can make a difference here, of course.) https://www.mpoweruk.com/life.htm https://www.mpoweruk.com/life.htm Fast charging from, say, 10% to 50% probably is a fairly small effect compared to trying to fast charge to 100%.
  - Dylan16807 4y ago
    Even that much is aching for more numbers. How about .5C versus 1.5C? What if my phone is one of those fancy ones rated for 6C or even 10C? Unless someone gives some precise scenarios it's so hard to guess how my phone might be affected.
deleted 4y ago
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> Fast charging all the time shortens the battery life. How much? It's a widespread claim but without specific numbers it's not very helpful, and there are suggestions that the numbers are pretty small. Limiting max charge, on the other hand, has known strong effects.

sillystuff 4y ago
> Limiting max charge, on the other hand, has known strong effects. Yes, and you used to be able to do that on a rooted android phone. But, Google required the removal of debugfs in recent android versions, so need to run a custom kernel too now to get back that functionality. Maximum charge, and percent charge where charging begins should be user accessible settings on any device with a lithium ion battery. Charging rate should also be a user accessible setting. The cable idea is just a hacky work-around for crappy software, that addresses one of the reasons lithium ion batteries prematurely fail, and doesn't require modifying the device to be charged.
- Dylan16807 4y ago
  Charge control should be standard, but at least samsung puts in the option for 85% charge.
Robotbeat 4y ago
Well if you do it every time at like 2-3C, you’re talking maybe 500 cycles compared to 1000 cycles at a slower charge rate. Depends on other stuff, too. Depth of discharge and max charge voltage are both even larger effects, but it still matters. (Knowing the exact chemistry of your phone’s battery can make a difference here, of course.) https://www.mpoweruk.com/life.htm https://www.mpoweruk.com/life.htm Fast charging from, say, 10% to 50% probably is a fairly small effect compared to trying to fast charge to 100%.
- Dylan16807 4y ago
  Even that much is aching for more numbers. How about .5C versus 1.5C? What if my phone is one of those fancy ones rated for 6C or even 10C? Unless someone gives some precise scenarios it's so hard to guess how my phone might be affected.

deleted 4y ago

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