[clomond]

Li-ion is a very big umbrella of battery chemistries, and within can have broadly different safety and stability profiles.

More important is that Li-ion cells are no joke, and are not equivalent to ‘AA’ or ‘AAA’ battery formats. You can NCM, NCA, LFP, Cobalt chemistries and blends within - not even accounting for differing mAH and charge/discharge capacities. 18650 is simply a form factor.

Better labeling, specing, regulated and certified repair processes are just a start for solutions as it is currently a Wild West.

However, statements like ‘Li-ion should be replaced ASAP’ do not factor in that… lithium ion as a platform is not going anywhere and has essentially won at least the next half century for 18650 type form factors and applications. Moving away is not a reasonable solution.

[jacquesm]

Lithium Ion without further designation refers to Lithium Polymer or plain Lithium Ion cells such as this one: https://eu.nkon.nl/products/sony-murata-us18650-vtc6.html

Other chemistries are usually indicated by a different designation, such as LiFePO4, LTO and so on.

[sbradford26]

Sorry but that just isn't right. The battery you listed is an just an NMC battery , the listing pages are just lazy and don't list it. There isn't just a plain lithium ion cell. Also lithium polymer just means that a polymer electrolyte is used instead of a liquid electrolyte.

https://en.wikipedia.org/wiki/Lithium-ion_battery