Post reply

The message has the following error or errors that must be corrected before continuing:: Warning: this topic has not been posted in for at least 120 days.
Unless you're sure you want to reply, please consider starting a new topic.

Name
Email
Subject
Message icon

Other options

Return to this topic
Don't use smileys

Verification:

Please leave this box empty:

Shortcuts: ALT+S post or ALT+P preview

Topic summary

Posted by anan

- January 08, 2024, 12:09:23

Quote from: NikoB on January 07, 2024, 12:58:32If there really has been progress in batteries over the last 5-6 years, why isn't there any progress in smartphone batteries? Especially from semi-basement manufacturers? After all, advanced technologies should gradually seep into the second echelon of spare parts manufacturers, right?

It is probably due to a lack of incentive to develop better phone batteries. A ~15$ battery on a ~1000$ phone is too small a component. Lets say you want to charge double for the battery - it would be a gargantuan effort to double the battery capacity on the same footprint.
The last phone battery improvement I remember was from Samsung when they touted a 10% capacity increase some years ago.
Whereas car battery is like 50% of the car cost (or 110% in case of Hyundai). Any improvement there will yield a substantial financial benefit.

Posted by A

- January 08, 2024, 00:49:03

Quote from: NikoB on January 07, 2024, 12:58:32If there really has been progress in batteries over the last 5-6 years, why isn't there any progress in smartphone batteries? Especially from semi-basement manufacturers? After all, advanced technologies should gradually seep into the second echelon of spare parts manufacturers, right?

Well first of all, the batteries used in EVs and used in phones while both lithium ion use different chemistry. Cars use NCA, NMC and LFP. While phones use LCO.

Most of chinese EVs focus was on LFP

On top of that, EVs have passive liquid cooling and active air cooling which phones don't

That said, even for phones batteries have been getting more energy dense. But for unofficial batteries, you will always have things that fail QC, or low quality batteries as the upper quality is hogged by major providers

It would be one thing when it was like in the past when batteries were removable, making more credible companies participating. I remember installing larger batteries on my older phones back then. But now that batteries are sealed, the market for it is small.

We shall see what happens when the EU regulation requiring removable batteries is in effect. Maybe we will finally get back the 3rd party parts market for batteries

Posted by MQ.Yang

- January 07, 2024, 18:54:58

Lithium-ion technology has made considerable accumulated progress in the last decade, with the most advanced cells rich in nickel or silicon reaching almost 300w/kg.

The problem with smartphones is that at the same time that technology has evolved slightly, manufacturers want to make devices thinner and lighter, and this has been beyond the point of being attractive for some time now. But the main battery manufacturer recently mentioned that it will bring technology with a greater amount of silicon, for now it will offer about 10% improvement but the potential after improvements is to increase gravimetric energy density by up to 40%.

Posted by NikoB

- January 07, 2024, 12:58:32

Meanwhile, people all over the world are waiting for the Chinese to create, for at least $8-15 (Apple batteries cost about that much in bulk, according to Fixit), complete analogues of the original branded batteries for many old smartphones. And the Chinese are selling some useless junk, which in reality is 2-3 times less in capacity and number of cycles than the original batteries, even from 2015(!). Progress is bypassing Chinese factories producing compatible batteries for smartphones...

If there really has been progress in batteries over the last 5-6 years, why isn't there any progress in smartphone batteries? Especially from semi-basement manufacturers? After all, advanced technologies should gradually seep into the second echelon of spare parts manufacturers, right?

Posted by Redaktion

- January 07, 2024, 10:44:54

Volkswagen has put its solid-state battery joint venture cells to the ultimate aging and capacity loss test and confirmed that they 'don't age.' The solid-state battery of its PowerCo partnership went way beyond the current 700-cycle and 20% retention benchmarks.

https://www.notebookcheck.net/Solid-state-battery-retains-95-capacity-over-1-000-charge-cycles-in-VW-tests-that-could-resurrect-the-used-EV-market.790014.0.html