All Galaxy phones have a configuration to limit the charge to 85%
How to prolong lithium based batteries
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Re: How to prolong lithium based batteries
#62I have had my phone for 4.5 years. I charge it every night to 80% - I have Accubattery installed, so it pings to tell me to unplug it, and it also does a fairly decent job of measuring the capacity. I charge on a fast charger (10W) instead of the super-fast charger (18W) because that keeps the temperature from rising too much. I use the phone a fair amount, so I'm usually charging from around 50%. Therefore, the battery has had ~1600 cycles of around 30%, or 480 full cycles equivalent. The design capacity of the battery is 4000mAh, and Accubattery tells me it currently stores 3460mAh, which is 87% of the design capacity.
I therefore approve and recommend the above strategy for treating the battery to make it last longer. I also recommend Accubattery - it seems to do the job fairly well.
Re: How to prolong lithium based batteries
#63I’m not a battery expert but some coworkers from the battery lab at work are, and they say that charging more often is better than doing big cycles. On most chemistries. In more concrete terms, it’s better to keep the state of charge between for example 60 to 30% compared to for example 80% to 15%. Big cycles like 100% to 5% are the most damaging over time.
This % all depends on how the battery management system (BMS) was designed to manage the state of charge (SOC). Some BMS may set 100% SOC to 80% capacity to prolong the cell and pack lifetime. Additionally, 0% SOC may be set as high as 20% capacity.
>> Additionally, 0% SOC may be set as high as 20% capacity. I think that was the case for GM Bolt years ago, but batteries cost a lot of $$ and you won't see more than 5% reserved for buffer these days -- or 95% usuable capacity.
Tesla also had software lock limiting access to extra battery capacity on the Model S -- 70KWh instead of 75KW, or about (7%?). No point in carrying around extra weight that costs $3,000 to unlock, but it probably helped prolong battery life.
Re: How to prolong lithium based batteries
#64Note that in most battery chemistries, the degradation floors at around 80% whatever you do. These advices are to get to that 80% slower. If you are fine with having 80% in like 2 years instead of 10 years, you don’t have to really limit yourself. A better way will be manufactures to advertised 100% as current 80% and allows you to boost you to 120%.
Check the article, it contains a graph where the capacity is reduced to 10%.
The worst I am seeing is 78% in figure 6.
Obviously, I am not talking about charging your battery at higher voltage than advised, but comparing 0-100% (least optimal cycles) to 40-60% (most optimal cycles).
Re: How to prolong lithium based batteries
#65Earlier quoted context omitted.
My car will run the AC on the battery whenever it needs to, even if I'm away.
ill have to check: its a 2023 bolt euv
Bolt will cool itself, but it does so more aggressively when plugged in (even if not actively charging). I always leave our EVs plugged in when it's over about 80F and below freezing because of that.
My 2021 is complaining loudly (running the cooling system) about the heat-wave today.
Re: How to prolong lithium based batteries
#66I wish I could find this information for LFP batteries. There’s a lot out there, but it’s all mixed with advice for LiPo; I can’t find anything I trust to tell me the optimal voltages for maximum lifetime.
I was told that LFP is difficult because the battery management system (BMS) cannot reliably guess the state of charge using the voltage. The voltage is a mess on LFP. Even though a lower voltage prolongs the battery, you have to charge to 100% regularly to help the BMS. Thankfully the LFP chemistry doesn’t seem to mind high state of charge as much. As a popular source, Tesla recommends to daily charge the LFP batter…
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Re: How to prolong lithium based batteries
#67All Galaxy phones have a configuration to limit the charge to 85%
Recent updates have changed that. The limit is now 80%. Also some more options (like not staying at 100%, but bouncing between 95% - 100% when plugged in to a charger overnight) were added.
Re: How to prolong lithium based batteries
#68I have had my phone for 4.5 years. I charge it every night to 80% - I have Accubattery installed, so it pings to tell me to unplug it, and it also does a fairly decent job of measuring the capacity. I charge on a fast charger (10W) instead of the super-fast charger (18W) because that keeps the temperature from rising too much. I use the phone a fair amount, so I'm usually charging from around 50%. Therefore, the batt…
Accubattery pings, but doesn't actually stop charging. Some Android, Samsung Galaxy for instance, now has "battery protection" mode that stops charging at 80%.
Re: How to prolong lithium based batteries
#69Two unconventional things I do to improve my iPhone's battery health (which follow this article's findings): 1) Don't use a case - Otherwise, you are literally wrapping your phone in a rubber insulator 24/7, increasing its overall temperature. 2) Don't charge at night - Turn off your phone at night. Instead, charge it during the day when you're at your desk. This reduces the number of cycles over years (because your…
iOS will not fully charge your battery during the night - it will top off the battery just before you usually take it off the charger in the morning (it learns your usual schedule + it probably also makes sure the battery is ready based on your alarm settings).
Re: How to prolong lithium based batteries
#70I wish I could find this information for LFP batteries. There’s a lot out there, but it’s all mixed with advice for LiPo; I can’t find anything I trust to tell me the optimal voltages for maximum lifetime.
LFPs are indestructible and last forever. For general advice, they like it cooler[1] than other kinds of lithium batteries. Try to keep them between 15-25°C. Other than that, charge LFP batteries to whatever percentage you want whenever you want. They are simply better than every other kind of lithium chemistry. Their practical downside is lower cell voltage (3.2 vs 3.8), and slightly lower energy density. I've spent…
A practical concern is that the batteries in question will be powering our cottage, which is entirely off-grid.
It’s also unused for half the year, and for much of that half the solar input is effectively zero; for part it’s literally zero. Not enough to even run the Victron gear, never mind a heater. Spring temperatures often drop below -5C.
So we’ll winterise it by shutting everything off, BMS included to the degree it’ll let us, and the question is what SoC they sold be at for that to work.