Tesla Inc (TSLA)

[boston745]

China urges citizens to trade in ‘old lithium e-bikes’ for newer lead acid electric bikes

Over the last decade or so, China has seen a shift from older AGM batteries, which are heavy and bulky, toward lighter and longer-lasting lithium-ion batteries.

However, safety concerns regarding rare yet dangerous lithium-ion battery fires have put a pause on that proliferation. The government instituted new safety standards for lithium-ion batteries in e-bikes last year, but there’s also been a major pushback toward AGM batteries for the domestic market. Even major technological leaders in the industry, such as Yadea and NIU, produce many AGM-based e-bikes for the domestic market while exporting primarily lithium-ion battery e-bikes abroad.

Now we’re seeing China’s Ministry of Commerce (MOC) announcing new policies to further promote trade-ins of lithium-ion battery e-bikes for AGM models. The new MOC policy includes subsidies to help individuals buy eligible new models.

MOC says is intended to help phase out older electric bikes with safety risks.

It will work to phase out older e-bikes however you can do that by doing this same trade-in program. However moving people away from lithium suggests China's ministry is worried about the dangers lithium batteries pose due to their propensity to spontaneously combust. Why arent they doing this for their EV market too? They also need to move cellphones back to removable batteries so those can be traded in but this could be why they encourage people to constantly upgrade their phones.
On a side note, it seems odd that China cares more for its citizens than the US does. Then again, due to population density, its far more dangerous in China than in the US for these lithium batteries to go BOOM!!!💥

https://electrek.co/2025/01/29/china-urges-citizens-to-trade-in-old-lithium-e-bikes-for-newer-lead-acid-electric-bikes/

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How does EMF cause lithium batteries to experience thermal runaway and thus spontaneously combust? One of two main ways:

#1 - Overcharge/Discharge

With various impressed external magnetic field intensities an effect was noticed on the charge and discharge curves as well as the charge and mass concentrations within the batteries. With the two-dimensional model starting from 0mT and going to 1mT had the effect of discharging the battery faster and charging the battery faster. With the two-dimensional model starting from 1mT and going to -1mT had the effect of charging the battery faster. In either case an effect on the various characteristics of the battery were studied. With the experiments conducted on the two types of batteries the effect was more profound than subtle. Discharge times were twice as fast and charge times were equally
affected. With the smaller batteries they all generally charged faster under the presence of a magnetic field due to more uniform penetration. In the presence of the field they also discharged faster. The larger batteries would not see the same uniform penetration because only a small area of the battery sees the center of the coil it is placed on

In this dissertation, they found that external magnetic fields significantly increased charge and discharge rates in individual lithium battery cells; like shown in the following image. They also found that smaller batteries were impacted to a greater degree than larger ones. This is likely a reason Tesla is switching to larger battery cells in addition to employing magnetic attenuating honeycomb sandwich battery pack.

Thermal Runaway of Lithium-Ion Batteries Triggered by Electromagnetic Interference
https://ieeexplore.ieee.org/document/9025761

https://ars.els-cdn.com/content/image/1-s2.0-S0378775320302172-fx1_lrg.jpg

#2 - Stimulation of Dendrite Growth

Thermoelectric current causes asymmetric growth pattern of dendrites.

thermoelectromagnetic convection occurs in the vicinity of the solid-liquid interface, and vortices are generated between dendritic arms. It is shown that the thermoelectromagnetic convection has a major influence on dendritic morphology.

Quote Sources:

#1:https://digitalcommons.njit.edu/theses/1743

#2:https://www.sciencedirect.com/science/article/abs/pii/S001793101930225X

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For continued coverage of significant Airplane malfunctions goto my research board. 36 plane malfunctions since December 22nd.
https://investorshub.advfn.com/Bostons-research-43724

New board dedicated to Out of Control Tesla Accidents. More accidents to to be added.
https://investorshub.advfn.com/Tesla-Out-of-Control-Accidents-46016