100
you are viewing a single comment's thread
view the rest of the comments
[-] can@sh.itjust.works 2 points 1 year ago

I've noticed the trend but if you know the fine details please feel free to share.

[-] Zak@lemmy.world 10 points 1 year ago

In common consumer batteries, we saw the following evolution:

  • Dry-cell (zinc-carbon) batteries (late 1800s) - having a non-liquid electrolyte, these can be transported and used inside portable devices. They perform so poorly in sustained use that they led to the name "flash light" for the short runtime of portable lighting using them for power.
  • Heavy-duty (zinc-chloride) (late 1800s) - an improvement to dry-cell chemistry that roughly quadrupled runtime under load. Still used today for ultra-low-cost batteries.
  • NiCD (1940s) - a rechargeable substitute for zinc-chloride. Superior performance under extreme load, but otherwise low capacity, prone to memory effects, and a source of toxic waste.
  • Alkaline battery (1960s) - a roughly eightfold improvement over zinc-carbon under load, still very common today.
  • Lithium battery (1970s) - much more capable of sustaining high loads than alkaline, extremely shelf-stable, expensive
  • NiMH battery (1989) - a major improvement over NiCD, offering a rechargeable substitute with similar capacity to alkaline under light load and far superior performance under heavy load without the memory effect and toxicity of NiCD.
  • Low-self-discharge NiMH (2005) - Improvements in shelf-stability made pre-charged rechargeable batteries commercially viable, and allow users to store spare rechargeables charged.

And then there's the lithium-ion rechargeable. You're probably reading this on a device powered by one. It's much lighter than NiMH for the same amount of energy storage, and a bit better on energy per volume as well. Since its introduction in 1991, Li-ion technology has dropped in price by a factor of about 25, which is why electric cars are commercially viable now and weren't a couple decades ago.

Unfortunately, consumer devices powered by standardized, field-replaceable Li-ion cells haven't really caught on outside of vaporizer hobbyists and flashlights.

[-] Num10ck@lemmy.world -1 points 1 year ago

compare a car battery thats lead based and heavy and not rechargeable, to the one in your cellphone that is more powerful and way thinner and safer.

[-] smort@lemmy.world 7 points 1 year ago

The lead acid battery in your car is rechargeable

[-] mdd@lemm.ee 3 points 1 year ago

The battery starts the car and then the alternator charges the battery.

[-] Bitrot@lemmy.sdf.org 5 points 1 year ago

By what measurement is a car battery, at something like 75,000mAh and 500 or more cranking amps, less powerful than a cell phone battery?

[-] Num10ck@lemmy.world 2 points 1 year ago

energy density, depth of discharge, energy efficiency, lifespan

this post was submitted on 29 Nov 2023
100 points (98.1% liked)

Ask Lemmy

27241 readers
2796 users here now

A Fediverse community for open-ended, thought provoking questions


Rules: (interactive)


1) Be nice and; have funDoxxing, trolling, sealioning, racism, and toxicity are not welcomed in AskLemmy. Remember what your mother said: if you can't say something nice, don't say anything at all. In addition, the site-wide Lemmy.world terms of service also apply here. Please familiarize yourself with them


2) All posts must end with a '?'This is sort of like Jeopardy. Please phrase all post titles in the form of a proper question ending with ?


3) No spamPlease do not flood the community with nonsense. Actual suspected spammers will be banned on site. No astroturfing.


4) NSFW is okay, within reasonJust remember to tag posts with either a content warning or a [NSFW] tag. Overtly sexual posts are not allowed, please direct them to either !asklemmyafterdark@lemmy.world or !asklemmynsfw@lemmynsfw.com. NSFW comments should be restricted to posts tagged [NSFW].


5) This is not a support community.
It is not a place for 'how do I?', type questions. If you have any questions regarding the site itself or would like to report a community, please direct them to Lemmy.world Support or email info@lemmy.world. For other questions check our partnered communities list, or use the search function.


6) No US Politics.
Please don't post about current US Politics. If you need to do this, try !politicaldiscussion@lemmy.world or !askusa@discuss.online


Reminder: The terms of service apply here too.

Partnered Communities:

Tech Support

No Stupid Questions

You Should Know

Reddit

Jokes

Ask Ouija


Logo design credit goes to: tubbadu


founded 2 years ago
MODERATORS