After the last charge

Collection, second life, shredding and recovery; recyclable does not mean recovered.

After the last charge, another chain begins

The first step is logistical, not technical

Before anything can be recycled, a battery has to be collected, correctly identified by chemistry, safely discharged and transported — one that, if damaged or mishandled, can catch fire, a real risk requiring specific handling protocols very different from those for any conventional electronic waste. Once collected, the first decision is not automatically "recycle": it may be preferable to repair it if the fault is localized, to reuse it directly if it still works well for its original purpose, or to give it a second life in a less demanding application — home stationary storage, for example — if it no longer meets a vehicle's requirements but retains enough capacity for another service. Reuse can considerably extend the object's total useful service, but always requires a proper technical diagnosis, and must never be used as an excuse to delay treating a battery showing signs of damage or instability.

When recycling is the route: disassembly and shredding

When a battery does reach recycling, the process starts with disassembly that separates casing, wiring and reusable electronic components. Then, controlled shredding — carried out under inert atmosphere or with other safety measures, to avoid dangerous reactions with the active materials still present — produces two main fractions: a coarse metallic fraction, and a so-called "black mass," a fine mixture concentrating the electrodes' active materials, including lithium, nickel, cobalt and graphite. From that black mass, pyrometallurgical processes (high-temperature smelting), hydrometallurgical processes (chemical dissolution and selective recovery), or combinations of both recover the valuable metals, each with different recovery yields, energy consumption, chemical reagent use and secondary waste generation.

Not every material is recovered with the same ease

Steel, aluminum, copper, nickel and cobalt have clear market value and technically well-established recycling routes, similar in many respects to those of any other metallurgical industry. Recovering lithium and graphite, by contrast, can be both technically and economically harder: current processes lose a larger fraction of these materials during recycling, and their market value, lower than cobalt's or nickel's, offers less economic incentive to invest in more efficient recovery processes. Electrolytes, polymer binders and separators, moreover, form complex mixtures that do not necessarily become an equivalent component for a new cell again — they frequently degrade toward lower-value uses, when recovered at all. Recycling a total battery mass and effectively recovering a specific material are completely different metrics, and confusing them is a common source of misleadingly optimistic recycling figures.

Polymers do not patiently wait inside a well-managed system

A battery's polymer components — separator, binder, part of the casing — do not remain intact for centuries inside a well-organized waste-management circuit: they must be actively separated, energy-recovered or safely eliminated as part of the recycling process itself. Offering a single, universal "decomposition time" for these materials would be directly misleading, because that time depends on the exact polymer material, its additives, exposure to light and oxygen, and the specific environment it ends up in — and, in any case, a battery should never be abandoned in the environment expecting it to simply "degrade" safely on its own.

Recyclable does not mean recycled

The European Union sets a lithium-battery recycling efficiency target of 65% by weight by the end of 2025, rising to 70% by the end of 2030. It also sets separate recovery targets: by 2027, 90% for cobalt, copper, lead and nickel, but only 50% for lithium; by 2031, 95% and 80% respectively. These percentages are regulatory goals, not an automatic description of every plant or every battery collected.

The IEA estimates that recycling transition minerals like nickel, cobalt and lithium produces, on average, far fewer emissions than obtaining primary material, but warns that recycling does not eliminate the need for mining while the battery fleet keeps growing.

Your part of the loop is simple: do not throw batteries in household waste, do not send a swollen battery through regular mail, and use the collection channel indicated by the manufacturer or municipality.

The numbers, with their source

European regulatory targets, year by year

The EU Batteries Regulation (EU 2023/1542) sets concrete, rising targets, distinguishing between recycling efficiency (how much of the battery's total mass is processed) and recovery of specific materials (how much of each individual metal is actually recovered):

Note the gap between the lithium target (50-80%) and the other metals' target (90-95%): the regulator itself acknowledges that efficiently recovering lithium is, today, harder than recovering cobalt or nickel — exactly the pattern this leaf's recorrido tab describes.

Sources: European Commission — recycling efficiency and recovery targets; Regulation (EU) 2023/1542, consolidated text.

Recycling pollutes less than extracting again

According to the IEA, recycling transition minerals such as nickel, cobalt and lithium from used batteries produces, on average, far fewer emissions than obtaining the same amount of material from newly mined virgin ore — primary mining means moving far more rock per unit of useful metal ultimately obtained. However, the same agency warns that recycling, even at full capacity, does not eliminate the need to keep mining new ore while the world's battery fleet keeps growing: for years, the volume of batteries actually available for recycling will be much smaller than the demand for new material to manufacture additional batteries.

Source: IEA — Recycling of Critical Minerals.

What this table is missing

These percentages are European regulatory targets, not a universal description of what happens at every recycling plant in the world or with every battery chemistry collected: real performance depends on the specific plant technology, the chemistry of the battery processed, and whether it is collected intact or partly damaged. That is why this leaf avoids promising a single "100% recycling" figure without specifying which material and which year is being discussed.

Sources

• The European Commission summarizes material efficiency and recovery targets.
• The consolidated text of Regulation (EU) 2023/1542 distinguishes mass-based efficiency from recovery of each metal.
• The IEA explains benefits, limits and industrial capacity in Recycling of Critical Minerals.

Rates change with regulation, chemistry, collection and plant. That is why this leaf dates its targets and avoids promising "100% recyclable."