How long to recharge battery from alternator

[coopec]

The part about the last bit of charging battery taking a long time is supported by the issue of range/charging of electric cars.

To make the facts look acceptable marketing is concentrated on charging time to 80%. That's not optimal for batteries and these cars need to be fully charged whenever possible, most likely at home, at night.

Different technology, but same charging picture and even though the cars charge with all kinds of computer control, the last part is disproportionately long.

"In terms of cell chemistry, sodium-ion is a proven entity. This sodium-ion cell chemistry allows the battery to charge faster to almost 100% in 20 minutes and is non-flammable."9 Jan 2022

40% Cheaper, Fast Charging: Can Sodium-Ion Replace Li-Ion Batteries in EVs?

 

[ChromeDome]

"In terms of cell chemistry, sodium-ion is a proven entity. This sodium-ion cell chemistry allows the battery to charge faster to almost 100% in 20 minutes and is non-flammable."9 Jan 2022

40% Cheaper, Fast Charging: Can Sodium-Ion Replace Li-Ion Batteries in EVs?

Things indeed are developing, it is crucial to fix the matter to get people to buy the cars. Each day has its own stop press, breaking news about EV's.
Even a Tesla now presented with hydrogen solution, as an alternative.

 

[Neeves]

Even if nothing else there needs to be an alternative - lithium is a scarce commodity.

A problem will develop - if there is a better option 2 years down the track - why buy current technology if it is going to be replaced.

Jonathan

 

[coopec]

'Will sodium-ion replace lithium?

For about a decade, scientists and engineers have been developing sodium batteries, which replace both lithium and cobalt used in current lithium-ion batteries with cheaper, more environmentally friendly sodium'.6 Dec 2021

Sodium-based Material Yields Stable Alternative to Lithium-ion Batteries - UT News

 

[geem]

Even if nothing else there needs to be an alternative - lithium is a scarce commodity.

A problem will develop - if there is a better option 2 years down the track - why buy current technology if it is going to be replaced.

Jonathan

In addition, all EV batteries are likely to be liquid cooled soon. This allows faster charging. Any current EV battery technology will be obsolete.

 

[coopec]

Even if nothing else there needs to be an alternative - lithium is a scarce commodity.

A problem will develop - if there is a better option 2 years down the track - why buy current technology if it is going to be replaced.

Jonathan

https://www.washingtonpost.com/business/energy/why-sodium-is-ambanis-big-battery-bet-in-the-ev-race/2022/01/23/b6408bd8-7ca8-11ec-8cc8-b696564ba796_story.html

Weekend read: Sodium-ion batteries go mainstream

 

[MikeBz]

Back to the OP’s original question, the voltage regulator in the alternator makes a huge difference to charging times. A 13.8V regulator will take a long time to properly, fully recharge a lead acid battery. > 14V will be much faster.