BU-808: How to Prolong Lithium-based Batteries (2023)

Post by simulator5g » Sun, Jan 25, 2026, 5:36 PM UTC

stavros wrote: post #9

BLKNSLVR wrote: post #5

Earlier quoted context omitted.

My charging solution is that I've purchased three (cheap and therefore slow) wireless charging docks that sit my phone slightly leaning backwards, therefore nicely viewable if necessary. One sits on my desk at work, one sits on my desk at home and the third sits on my bedside table (it acts like a clock radio / alarm clock). I just place it on the relevant charger while working / sleeping and it's always got enough c…

Those really make my phone overheat, so I avoid them. Didn't they heat yours up?

Post by fragmede » Sun, Jan 25, 2026, 5:50 PM UTC

simulator5g wrote: post #21

user_7832 wrote: post #13

Earlier quoted context omitted.

> EV aren’t ready for world wide use. Fully agree (I'm 100% team PHEV or EREV/REEV) as a mechanical engineer. IMO BEVs and PHEVs/REEVs should be on parity in terms of tax/govt incentives, while encouraging electric use - for eg, subsidized (PH)EV charging, high(er) costs in city centres if running in ICE mode, etc. I was just curious if EV manufacturers use any other tricks that're "well known" in EV-land but not for…

These acronyms are a nightmare, what the hell is a PHEV? EREV? PZEV? Consumers are just expected to know this stuff somehow, it’s nuts. Sometimes I buy parts for my car and just hope I selected the right one, because some models are PZEV/not PZEV but the sticker that would tell me has turned completely white & can’t be read.

Post by pengaru » Sun, Jan 25, 2026, 6:04 PM UTC

SV_BubbleTime wrote: post #11

user_7832 wrote: post #6

+1 for battery university, they're an excellent source. Does anyone have any other suggestions for similarly technically deep (while approachable) articles on any other facet consumer electronics? My understanding from this article is that: 1. Charge the battery to as low a max percentage as possible (till about 65%) 2. Keep it as cool as possible (up to zero degrees C at least) 3. Use it as little as possible before…

> Do EV manufacturers use any other tricks not covered by this? Automotive EE here. EV aren’t ready for world wide use. That statement is constantly ignored by people in California who see zero issues with their new expensive fancy cars. Shortest version… The heating and cooling systems of the battery are there to prevent damage. BUT… who powers the heating and cooling systems? The battery of course. In a traditional…

Post by sandreas » Sun, Jan 25, 2026, 6:22 PM UTC

avidiax wrote: post #25

sandreas wrote: post #10

Earlier quoted context omitted.

It's probably not a flaky USB cable. Androids charging limit of 80% includes a policy to charge 100% every 14 days to recalibrate the battery controller. A possibility to limit charging to ~65% does not exist per se but you can measure the time it takes to charge from 25% to 65% and use a power timer to shut down charging after that period of time. It's not accurate but easy to implement. Another factor is fast charg…

Maybe I just expect too much battery life, but I find that I get quite low or even run out when I limit charging to 80%. My feeling is that the coulomb counting on the Pixel 8 Pro is just not very accurate, so the phone thinks it's at 80%, but is really at 60% or 40%. I still use the feature, but now I have to top up during the day every so often. I suppose rationally I should just charge to 100% rather than take a m…

Post by kuerbel » Sun, Jan 25, 2026, 7:05 PM UTC

SV_BubbleTime wrote: post #11

user_7832 wrote: post #6

+1 for battery university, they're an excellent source. Does anyone have any other suggestions for similarly technically deep (while approachable) articles on any other facet consumer electronics? My understanding from this article is that: 1. Charge the battery to as low a max percentage as possible (till about 65%) 2. Keep it as cool as possible (up to zero degrees C at least) 3. Use it as little as possible before…

> Do EV manufacturers use any other tricks not covered by this? Automotive EE here. EV aren’t ready for world wide use. That statement is constantly ignored by people in California who see zero issues with their new expensive fancy cars. Shortest version… The heating and cooling systems of the battery are there to prevent damage. BUT… who powers the heating and cooling systems? The battery of course. In a traditional…