CPCB Battery Recycling Guidelines 2026: What Lead Acid and Lithium-ion Recyclers Must Now Build, Monitor and Report

The CPCB battery recycling guidelines issued in July 2026 close a gap that has troubled the sector since the Battery Waste Management (BWM) Rules were notified in August 2022. The Rules told us that waste batteries must be managed in an environmentally sound manner; they did not tell a recycler what a compliant plant actually looks like. Rule 11(17) of the BWM Rules always envisaged that the Central Pollution Control Board would fill that gap with guidelines for the environmentally sound collection, storage, transportation, refurbishment and recycling of waste batteries. This document is that instrument, and it is unusually specific — it names equipment, stack heights, exposure limits and, in a few places, deadlines by which existing units must retrofit.

For anyone running or financing a recycling facility, the consequence is straightforward. The question a State Pollution Control Board asks at consent renewal has shifted from "do you have consent?" to "does your plant carry the specific items on CPCB's indicative list, and can you produce monitoring data against the specific limits?" What follows is what the guidelines require, chemistry by chemistry, and where the compliance risk actually sits.

Who the CPCB battery recycling guidelines cover, and why the scope is so wide

The BWM Rules apply to producers — that is, manufacturers and importers — as well as dealers, consumers, and every entity involved in collection, segregation, transportation, refurbishment and recycling. Crucially, they apply regardless of the battery's chemistry, shape, volume, weight, material composition or use. Portable, automotive, industrial and EV batteries all fall within scope, and the chemistries expressly named include lead acid, lithium-ion, nickel-cadmium and zinc-based systems.

The guidelines then narrow their technical detail to the two streams that dominate Indian volumes: waste lead acid batteries, and waste lithium-ion batteries. That is sensible triage, but recyclers handling other chemistries should not read the silence as an exemption — environmentally sound management, traceability through the EPR portal and scientific processing continue to apply. The framing throughout is resource recovery rather than waste disposal: reclaiming lithium, cobalt, nickel and lead cuts both virgin material demand and hazardous burden, an argument that matters commercially given India's dependence on imported critical minerals.

The recycling value chain the guidelines assume

Before any equipment list, the guidelines describe an idealised value chain, and it is worth internalising because SPCB inspections increasingly follow this sequence. It runs: setting up the recycling facility, collection, transportation, handling, dischargingor acid draining, storage, sorting, inspection, dismantling, and finally processing for recovery of metals and metal salts. The ecosystem spans consumers, dealers, producers, collection centres, refurbishing units and recycling facilities, with the stated policy goal of raising collection rates and improving critical mineral recovery.

Two steps are routinely under-built in practice. The first is inspection, where batteries capable of refurbishment for second use are meant to be identified and segregated rather than shredded. The second is storage, which the guidelines expect to be secure and compliant specifically to mitigate leakage, fire and chemical exposure risk — not merely to keep material dry.

Lead acid battery recycling under the CPCB guidelines: the plant expected

The lead acid process described is familiar — cutting open the battery by machine or manually, sending plastic parts to a plastic recycler, separating lead-bearing material, draining and neutralising the sulphuric acid electrolyte in an ETP, smelting the lead fraction with additives such as charcoal, soda ash, iron chips and flux, then refining in an alloying kettle and casting ingots. What has changed is the level of prescription around the supporting infrastructure.

On furnaces, the guidelines contemplate rotary furnaces, Mandir Bhatti and refining alloy kettles. In each case a suction hood connected to an adequate Air Pollution Control System (APCS) is required over the charging point — and for Mandir Bhatti, over the molten metal tapping point as well. The furnace train itself is specified in some detail: expansion chamber, cooling tubes or ducts, cyclone or multi-cyclone, bag filter with pulse jet or mechanical shaker, alkaline scrubber with alkali dosing arrangement, connection to the ETP, an ID fan, and a stack of not less than 30 metres.

Stack design is not left to interpretation either. Each stack needs a port-hole conforming to CPCB's source emission monitoring methodology published under LATS/80/2013-14, a monitoring platform, and safe ladder access — spiral, scaffold or zig-zag. Units that have historically relied on a temporary ladder at monitoring time should treat this as a retrofit item.

The manual-to-mechanical breaking transition

The most consequential operational change concerns battery breaking. The guidelines recognise two modes: manual cutting from the top with plate removal and residual acid draining, and mechanical breaking of the whole battery along with the casing. Manual dismantling is permitted only with a suction hood connected to an adequate pollution control device, a washing arrangement for plastic components before they go for recycling, and an acidic water neutralisation facility.

But manual operation is being phased down. Facilities above 5,000 MTA are expected to install a mechanical or automated waste battery breaking system within one year of notification of the guidelines; smaller units below 5,000 MTA get three years from issue. Cutting through the mechanical or automated system must be carried out on a concrete floor within a shed structure. Given how much of India's organised lead capacity still relies on manual breaking, this is the clause most likely to drive capital expenditure over the next thirty-six months, and the timeline should be re-verified against the notified text before it is built into a project plan.Furnace charging is also expected to move away from manual handling. The guidelines suggest vibro-feeders, silo-fed systems or scoop attachments mounted on forklifts, on the stated rationale that mechanised charging reduces worker exposure to lead fumes and dust.

Storage, effluent and residue handling

Used and waste lead acid batteries must be stored in a separate covered space with impervious acid-proof flooring, an acid collection tank connected to a neutralisation tank, and a fume arrester connected to adequate APCS to control acid fumes from the collection tank.

The ETP must be physico-chemical, must include acid neutralisation, and must receive acidic effluent from floor washing through a channel to the neutralisation tank. Disposal of neutralised effluent follows consent conditions. Where a mechanical or automated breaking system is installed, it must carry its own acoustic enclosure for noise control, dust and fume extraction, acid collection and neutralisation, and ETP treatment of lead-bearing and acidic wastewater.

ETP sludge requires a covered storage facility managed under the Hazardous and Other Wastes (Management and Transboundary Movement) Rules, 2016 as amended, and must go to a TSDF. Residue and slag from lead scrap and used battery recycling need separate, secured, covered storage on concrete floors, with records of transfer to TSDF maintained. All APCS equipment is to be installed on concrete flooring to prevent soil and groundwater contamination. Pallet packaging material is to be disposed of only to TSDF.

Plastic boxes and chips from dismantling are treated as lead-contaminated. They must be properly treated and sent to registered plastic processors or recyclers, or treated in-house using a suitable plastic processing system. Workers must be provided proper PPE — gloves, masks, boots and aprons.

Lead limits worth committing to memory

The guidelines consolidate the numbers that inspections turn on: lead in the work area at 0.05 mg/m³ on the NIOSH 8-hour average; lead in stack emissions at 10.0 mg/Nm³; lead in effluents at 0.10 mg/l; and lead in factory premises near the boundary wall at 1.0 µg/m³ on a 24-hour average.

Occupational health is dealt with directly. All lead-related units should examine workers at least once a year for blood and urine lead levels. Any person with a blood lead level above 42 µg/dl must be shifted immediately to a non-lead activity area and given special medical treatment until levels return to the acceptable range of 10 µg/dl. Recyclers must also comply with standards prescribed under the Environment (Protection) Rules, 1986 for other parameters.

Fugitive emissions: the quiet failure point

Stack compliance is comparatively easy to demonstrate; fugitive lead is where boundary-wall readings fail. The guidelines therefore prescribe a set of housekeeping controls with real force. Hood and fume collection design must be capable of capturing emissions from the tapping point, charging doors and furnace joints and transferring them to the APCS. Raw materials, intermediates and products must be stored and handled in covered areas with concrete floors, using mechanised equipment as far aspossible. Loading area floors are to be kept wet by sprinklers to stop lead dust becoming airborne. Wash water and rainwater must be collected through separate pits, delinked from the regular drain, with fine screens to allow only clear water to pass. Vehicle movement into production areas is to be restricted to trucks actually involved in material handling, and tyres must be washed before vehicles leave. A dedicated tyre-washing facility is required at entry and exit, with its wastewater routed to the ETP.

Lithium-ion battery recycling: a different risk profile entirely

For lithium-ion, the hazard is fire and thermal runaway rather than cumulative toxicity, and the guidelines are structured accordingly. The process begins with discharging the waste batteries — commonly by submerging them in a salt solution, though the guidelines are explicit that other appropriate discharge technologies may be used. Crushing and shredding follow, producing a mixture of copper, aluminium and iron along with black mass. A magnetic separator removes iron; a density separator then splits copper from aluminium.

Black mass then undergoes metallurgical processing to recover lithium, cobalt, nickel and similar metals, which may be pyro-metallurgical, hydrometallurgical or electrochemical. The guidelines note that hydrometallurgy is currently the deployed route in India.

R2, R3 and R4 — know your category

The facility requirements are mapped to recycler categories under the BWM Rules, and this matters because the equipment list you are held to depends on your registration. R2 covers battery dismantling and physical separation up to black mass generation, for all chemistries except lead acid. R3 covers refiners — black mass processors only, taking processing up to metals in compound form. R4 covers the full chain: dismantling, physical separation and refining.

Requirements common to all three categories include firefighting equipment with a fire hydrant system, sprinklers and foam-type extinguishers in storage and utilisation areas; dedicated storage for black mass bags or containers and for solvent and acid tanks with proper covers, acid-proof brick lining, slope, seepage collection pits and caution signage under cool, dry, well-ventilated covered sheds; mechanised loading, unloading, storage and transfer of black mass throughout the utilisation process; a compliant stack with sampling port, platform and ladder access per LATS/80/2013-14, connected to APCS and of 30 metres or more as prescribed by the SPCB; and online analysers for PM, HF and TOC in the stack where operations are continuous.

R2 and R4 units additionally need dedicated storage for different lithium-ion types, a discharging tank for salt solution or other suitable discharging equipment, a drying unit and conveyor system to move discharged batteries to the shredder (with other mechanical means permitted for large batteries where a conveyor is impractical), the shredding or crushing unit itself with flame-proof electrical fittings and guarded parts, auto-controlled feed rate through hoppers to prevent overfeeding, temperature control on both shredding and drying units, a system at the shredder to collect or incise electrolytes so they do not escape into the workplace — with collected electrolyte sent for incineration, co-processing or recycling — magnetic and/or density separators, andpollution control devices such as suction hoods, cyclones and pulse jet bag filters to capture dispersed black mass during separation.

R3 and R4 units carry the wet-chemistry list: leaching reactors, filtration units, extraction reactors, stripping units, a centrifuge or alternative drying equipment, crystallisation units (optional) and evaporation or drying units. They also need an alkaline scrubbing system on the leaching and extraction reactors, or lids on reactors and vessels; bag filters at salt crushing, which is optional where the salt is wet or sold uncrushed; and a fume extraction system followed by an activated carbon filter in the solvent extraction area, connected to the stack. Wastewater from process, floor washing, spillage, reactor washing, scrubber bleed and MEE condensate is to be reused in the process or treated physico-chemically in an ETP to meet SPCB discharge standards.

How the hydrometallurgical route actually runs

The guidelines set out the sequence in enough detail to be auditable. Sorting, discharging and dismantling of large batteries comes first, with packs broken down to cell or module level and casings, plastics, electronics and cables separated. Because cells may retain charge and because lithium-ion systems carry fire risk from mechanical damage, inflammable components, volatile compounds and thermal runaway, full discharge before further processing is expected.

Shredded output is separated magnetically or gravimetrically to isolate black mass. Black mass is then fed with acid and water into a reactor under controlled pH and temperature. Filtration separates leachate from a solid cake, which is washed and collected as graphite. Where the black mass contains iron, iron phosphate is recovered. The filtrate is purified, and copper and alumina report to a separate cake and leaching step yielding copper salt. The purified filtrate passes through a solvent extraction circuit that sequentially recovers manganese, cobalt, nickel and lithium using organic extractants. Each metal is stripped with sulphuric acid and precipitated to yield sulphates or carbonates, then centrifuged and dried. The final raffinate, largely sodium sulphate, goes to a multiple-effect evaporator to produce sodium sulphate crystals, with condensate recycled back to leaching and washing.

Dismantling and processing safeguards

Before dismantling, packs should be fully discharged to a safe limit using static or dynamic resistance through an electronic load, or an alkaline solution. Protective casing, power electronics, the Battery Management System and system covers may be removed to reach modules. Voltage measurement must be carried out before or during dismantling. Temperature may be checked by heat scan, and cells showing deviation from ambient should be moved to a secured area after measuring residual charge and monitored continuously — potentially kept in salt water to control temperature.

On the processing side, separation of black mass from aluminium, iron and copper must occur in a covered area with adequate APCS such as multi-cyclones and pulse jet bag filters on suction. A suction hood connected to a bag filter is required at the point black mass is charged into the reactor. Alkaline scrubbing controls acidic fumes from leaching and extraction; APCS controls metallic salt dust at salt crushing; fume extraction with an activated carbon filter controls VOCs in solvent extraction. Work zones need proper ventilation, and PPE must match the process and chemicals as per the Material Safety Data Sheet, with worker safety governed by the Factories Act, 1948as amended. Flame-proof electrical fittings and regularly checked fire protection systems are required throughout.

There is also an important liability clause. Where environmental damage arises from improper handling — including accidental spillage during generation, storage, processing, transportation or disposal — the occupier, whether sender or receiver, must implement immediate response measures, environmental site assessment and remediation of contaminated soil, groundwater or sediment, in line with CPCB's guidelines on implementing liabilities for environmental damages due to handling and disposal of hazardous wastes.

Lithium-ion emission and work zone limits

Source emissions from stacks connected to reactors or process units must meet the following, or SPCB-prescribed limits where those are stricter: particulate matter 50 mg/Nm³; manganese as Mn 5 mg/Nm³; sulphuric acid mist 50 mg/Nm³; total fluoride 25 mg/Nm³; hydrogen fluoride 4 mg/Nm³; and TOC 20 mg/Nm³.

Work zone limits are: PM10 at 5 mg/m³ TWA; sulphuric acid at 1 mg/m³ TWA; hydrogen fluoride at 3 ppm TWA; fluorides as F at 2.5 mg/m³ TWA; manganese compounds as Mn at 5 mg/m³ as a ceiling limit that may not be exceeded for any period; cobalt metal, dust and fume as Co at 0.1 mg/m³ TWA; copper dusts and mists as Cu at 1 mg/m³ TWA; and nickel at 1 mg/m³ TWA. TWA is measured over eight hours of process operation.

Monitoring frequency is prescribed: quarterly in the first year of utilisation, then at least annually thereafter. Testing must be done by ISO 17025 accredited or EPA 1986 approved laboratories, with results submitted to the SPCB or PCC as required by the Consent to Operate. Treated effluent must be discharged in accordance with CTO conditions under the Water (Prevention and Control of Pollution) Act, 1974.

Records, returns and what happens when you fall short

The reporting architecture runs entirely through CPCB's online EPR portal for battery waste. Recyclers must register on it. They must generate EPR certificates and transfer them to producers so producers can meet their EPR targets. They must upload financial-year-wise data on waste battery procurement, batteries recycled, and sales of recovered material. And they must file quarterly returns through the portal.

Where the guidelines are violated, action follows the Guidelines for Environment Compensation under the BWM Rules, 2022, published in September 2024. That is a meaningful escalation: environmental compensation is formula-driven and applied administratively, so a documentation failure can convert into a monetary demand without a prosecution.

Finally, these guidelines do not stand alone. They apply in addition to CPCB's guidelines for utilisation of black mass for recovery of carbon and graphite material and metal compounds by hydrometallurgy (January 2025), and the Standard Operating Procedure for recycling of lead scrap and used lead acid batteries (January 2024). A gap analysis that reads only the July 2026 document will be incomplete.Frequently asked questions on the CPCB battery recycling guidelines

What are the CPCB battery recycling guidelines 2026?

They are guidelines issued by the Central Pollution Control Board in July 2026 under Rule 11(17) of the Battery Waste Management Rules, 2022, prescribing environmentally sound procedures, facility requirements, emission standards and reporting duties for the collection, storage, transportation, refurbishment and recycling of waste batteries — with detailed technical annexures for lead acid and lithium-ion chemistries.

What is the difference between R2, R3 and R4 battery recyclers?

R2 covers dismantling and physical separation up to black mass generation. R3 covers refiners who process black mass until metals are obtained in compound form. R4 covers the full chain — dismantling, physical separation and refining. All three categories exclude lead acid batteries, which are dealt with separately. Your registration category determines which equipment list applies to you.

When must a lead acid recycler install a mechanical battery breaking system?

Facilities above 5,000 MTA are expected to install a mechanical or automated waste battery breaking system within one year of notification of the guidelines; units below 5,000 MTA get three years from issue. Verify the operative date against the notified text before committing capital.

What are the lead emission limits for battery recyclers in India?

Lead in the work area is 0.05 mg/m³ on the NIOSH 8-hour average, lead in stack emissions is 10.0 mg/Nm³, lead in effluent is 0.10 mg/l, and lead near the factory boundary wall is 1.0 µg/m³ on a 24-hour average. Workers with blood lead above 42 µg/dl must be moved to non-lead work until levels return to 10 µg/dl.

What emission standards apply to lithium-ion battery recycling?

Stack limits are particulate matter 50 mg/Nm³, manganese 5 mg/Nm³, sulphuric acid mist 50 mg/Nm³, total fluoride 25 mg/Nm³, hydrogen fluoride 4 mg/Nm³ and TOC 20 mg/Nm³ — or the SPCB's limits where stricter.

How often must emissions be monitored?

Quarterly during the first year of utilisation, then at least annually. Testing must be done by an ISO 17025 accredited or EPA 1986 approved laboratory, with results filed with the SPCB or PCC as required by the Consent to Operate.

What is black mass?

Black mass is the fine powder recovered after shredding lithium-ion batteries and separating out iron, copper, aluminium and plastics. It carries the valuable cathode metals — lithium, cobalt, nickel and manganese — and is the feedstock for hydrometallurgical refining.

What returns must a battery recycler file?Recyclers must register on CPCB's online EPR portal, generate and transfer EPR certificates to producers, upload financial-year-wise procurement, recycling and sales data for recovered material, and file quarterly returns through the portal.

What happens if a recycler violates these guidelines?

Action follows the Guidelines for Environment Compensation under the Battery Waste Management Rules, 2022, published in September 2024. Environment compensation is formula-driven and applied administratively, so a documentation failure can become a monetary demand without any prosecution.

What to do with this

If you operate a facility, the useful next step is a line-by-line mapping of the indicative equipment lists against what is physically installed, followed by a monitoring gap check against the limits above and a review of whether your EPR portal filings are current. Units below and above the 5,000 MTA threshold should date their mechanical breaking retrofit obligations now rather than at the next consent renewal. At Testa & Tegmen we carry out exactly this kind of pre-inspection scrutiny under the CPCB battery recycling guidelines — reading a facility the way a reviewing officer would, before the reviewing officer does.