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

batteryuniversity.com

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

#51

Post by bahmboo »

SV_BubbleTime wrote: post #45
s-y wrote: post #38

Earlier quoted context omitted.

Are you a technician or an engineer? And as a follow up, what part of the vehicle do you engineer? Because this sounds a lot like a case of a dentist seeing a lot of cavities and making conclusions that teeth are "bad tech". I live in a climate that's in yearly flux from -20 to +35 C and EVs have been normal here for a long time(7+ years) with no major issues. What parameters and therefore regions does your statement…

Engineer. I started in core competency groups, worked on powertrain integration, and now, I’m a specialist. I roam around and put myself to use wherever needed. I’m now a consultant but I have badges for idk, maybe 20 facilities.

I don't see anything in your comment history that would indicate a strong engineering role. Mostly political engagements really. You haven't said anything useful on this thread regarding TFA and it's content. Listing your credentials while making obviously false and dismissive statements is not good faith discussion.

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

#52

Post by simulator5g »

jwiz wrote: post #39
simulator5g wrote: post #22

Earlier quoted context omitted.

They’re a joke, I used to have one in my car and the combination of sunlight & internally produced heat would make my phone shut off & display a “iPhone is too hot” message. Even when it’s cold outside.

I think that's just sun+charging, not wireless charging specific.

I switched to wired charging with the phone mounted in the same spot and the heat issue went away. Wireless charging produces a lot more heat than wired.

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

#53

Post by simulator5g »

user_7832 wrote: post #43
simulator5g wrote: post #21

Earlier quoted context omitted.

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.

> These acronyms are a nightmare, what the hell is a PHEV? EREV? PZEV? PHEV is the old term, it's a plug in hybrid EV. I.e., you can plug it in and use the battery, or use the ICE engine via petrol (gasoline). (B)EVs are pure battery EVs. Think Tesla. REEV/EREV is range extender EV. Essentially an EV that has a small ICE engine that's very handy for making the 50 or 100km battery "run" for 500km if the need arises, b…

Whenever I buy parts for my regular gas car the parts site asks if it’s PZEV or DOHC. To make matters worse the PZEV version is also DOHC (dual over head cams) as far as I can tell. And the VIN number doesn’t say if it’s PZEV or not. It’s not on any of the paperwork I got with the car either.

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

#54

Post by butvacuum »

HPsquared wrote: post #19
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…

Light bulbs (including LEDs) are similar. If you use them at slightly lower then their maximum rating, things tend to last a LOT longer. The "Dubai lamp" uses this concept - oversized LEDs that are derated, and last a very long time (100k hours). You can do the same by buying oversized dimmable LEDs and simply turning down the brightness.

That doesn't help nearly as much as reducing the current through them. And, PWM doesn't change the lumens per watt at all.

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

#55

Post by greentea23 »

One of the biggest reasons I still prefer to root my phone is to use acc https://github.com/VR-25/acc. It's criminal that you have to root to run code that reduces charging speed or shuts the phone down automatically. I have it shut down at 20% and charge to 80% except when I know I will need to be out for an extended period without a charger.

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

#56

Post by knowitnone3 »

SV_BubbleTime wrote: post #45
s-y wrote: post #38

Earlier quoted context omitted.

Are you a technician or an engineer? And as a follow up, what part of the vehicle do you engineer? Because this sounds a lot like a case of a dentist seeing a lot of cavities and making conclusions that teeth are "bad tech". I live in a climate that's in yearly flux from -20 to +35 C and EVs have been normal here for a long time(7+ years) with no major issues. What parameters and therefore regions does your statement…

Engineer. I started in core competency groups, worked on powertrain integration, and now, I’m a specialist. I roam around and put myself to use wherever needed. I’m now a consultant but I have badges for idk, maybe 20 facilities.

Sure. You're a "specialist" but roam about doing anything and everything? That's the complete opposite of a specialist. I'm a networking expert but I just roam around fixing computer issues just like a basic tech.

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

#57

Post by SV_BubbleTime »

bahmboo wrote: post #51
SV_BubbleTime wrote: post #45

Earlier quoted context omitted.

Engineer. I started in core competency groups, worked on powertrain integration, and now, I’m a specialist. I roam around and put myself to use wherever needed. I’m now a consultant but I have badges for idk, maybe 20 facilities.

I don't see anything in your comment history that would indicate a strong engineering role. Mostly political engagements really. You haven't said anything useful on this thread regarding TFA and it's content. Listing your credentials while making obviously false and dismissive statements is not good faith discussion.

lol… “I checked your post history and made bad assumptions” is the most Reddit Detective vibe I’ve ever seen outside of Reddit :D

You own an EV right?

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

#59

Post by avidiax »

averynicepen wrote: post #50
avidiax wrote: post #37

I may be a bit odd, but I store lithium ion battery containing electronics in the vegetable drawer in the fridge. You lose 20% of capacity in a year if you have 100% state of charge but only 6% loss of capacity at refrigerator temperatures. So tool batteries, small electronics and whatever else that isn't used weekly gets put in. I also try to charge fully only just before use (and only if I need 100%), and store at…

Have you ever measured your battery voltages over time storing it this way? Is that 6% capacity loss theoretical or measured data? I'm intrigued. This sounds crazy, but it should technically be fundamentally sound.

I haven't, and it wouldn't be the voltages. You would have to do a rundown test and see what the effective capacity is (watt-hours).

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

#60

Post by user_7832 »

simulator5g wrote: post #53
user_7832 wrote: post #43

Earlier quoted context omitted.

> These acronyms are a nightmare, what the hell is a PHEV? EREV? PZEV? PHEV is the old term, it's a plug in hybrid EV. I.e., you can plug it in and use the battery, or use the ICE engine via petrol (gasoline). (B)EVs are pure battery EVs. Think Tesla. REEV/EREV is range extender EV. Essentially an EV that has a small ICE engine that's very handy for making the 50 or 100km battery "run" for 500km if the need arises, b…

Whenever I buy parts for my regular gas car the parts site asks if it’s PZEV or DOHC. To make matters worse the PZEV version is also DOHC (dual over head cams) as far as I can tell. And the VIN number doesn’t say if it’s PZEV or not. It’s not on any of the paperwork I got with the car either.

Ah, I see.

I googled PZEV, and apparently all it means is that it isn't releasing gasoline vapours - other emissions don't matter.

So it's essentially just an ICE engine car that's not super polluting. It has nothing to do with EVs apart from being misleading in its name (perhaps on purpose?).

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