Disposing of & recycling car batteries — free of charge and done properly in 2026
An old starter battery is not ordinary waste, but a valuable source of raw materials. Lead, plastic and sulphuric acid can be almost completely recycled. Anyone who returns their 12-volt battery properly conserves resources, avoids environmental damage and benefits from the statutory deposit system. In this guide, you will learn how the recycling of your car battery actually works, which variants – from the classic wet battery to the AGM battery to the modern LiFePO4 storage – are processed in which way, and why this remains free of additional cost for you.
Electronicx GmbH from Cleebronn (Baden-Württemberg) specialises in high-quality starter and supply batteries and takes back used batteries in accordance with the requirements of the Battery Act. You can find our contact details below – you can hand in your old power source both on site at Hindenburgstraße 37A, 74389 Cleebronn, and as part of a new order on Buying car batteries.
Why is recycling a car battery so important?
Lead-acid batteries consist of around 60–70 % recyclable lead, 10–15 % diluted sulphuric acid and 20–25 % polypropylene casings. If a 70 Ah battery (12 volt, 650 A cold cranking current) is not handled properly, heavy metals and acids can enter groundwater and soil. Preventing this is the task of a closed material cycle: in Germany, several hundred thousand tonnes of used batteries are collected every year and processed into secondary raw materials in certified facilities.
Whether AGM (e.g. 80 Ah, 800 A CCA for start-stop vehicles), EFB (around 70 Ah, 680 A) or a LiFePO4 on-board battery (e.g. 100 Ah, 2000+ full cycles) – each system requires its own recycling path. The goal is identical: recovery of metals, neutralisation of acids and processing of the plastic fraction. Modern recycling rates for conventional starter batteries are well above 90 % – with an upward trend.
- Conservation of resources: One kilogram of recycled lead saves around 60 % energy compared with primary production.
- Circular economy: The casing of an old 80 Ah AGM is shredded and turned into new granulate for battery boxes.
- Hazardous substance management: Battery acid is neutralised or converted into sodium sulphate for the glass and detergent industry.
- Legal certainty: As the end user, you are responsible for proper disposal – otherwise fines may be imposed.
Legal basis: the Battery Act and the deposit obligation
The disposal of vehicle batteries in Germany is governed by the Battery Act Implementation Act (BattDG). It obliges manufacturers, importers and retailers to take back used batteries and dispose of them properly – and obliges you as a consumer not to dispose of spent batteries in household waste.
The Battery Act Implementation Act (BattDG) in brief
The BattDG, in force since 18.08.2025, requires among other things that manufacturers register their batteries. Vehicle batteries are subject to a deposit obligation, which is handled via the purchase price. Retailers who sell starter batteries must ensure take-back for end consumers and may not refuse it. Returning them is free of charge for you – provided it is a battery of the type the retailer carries in its range. Because Electronicx sells exactly such batteries, returning them to us is straightforward.
How does the deposit system work in practice?
When you buy a new starter battery, for example an AGM battery 100 Ah for 12 V motorhome on-board systems, a deposit of 7.50 Euro incl. VAT is shown on the invoice. This does not apply if you return an old starter battery of the same type (lead-acid basis) at the same time – the deposit is offset against the invoice or paid out. If you do not return a used battery, the deposit is retained as a contribution to the recycling system. We have compiled more details on Car battery deposit.
For lithium iron phosphate batteries (LiFePO4) used in the automotive sector as supply or starter batteries, the same principle applies provided they are classified as vehicle batteries. Here too, retailers ensure proper disposal.
Where can you return your old car battery free of charge?
Several options are open to you – all legally compliant and free of charge for you:
Take-back at the retailer
Every seller of starter batteries, whether stationary or online, must take back old models. If you order, for example, an AGM battery 80 Ah from Electronicx for your start-stop car, you can simply hand in the old 70 Ah EFB with the shipment or bring it along. Our team in Cleebronn documents the acceptance and feeds the battery into the recycling cycle. The entire process is integrated into our ordering processes – you do not need to do anything else.
Municipal recycling centres and hazardous waste collection vehicles
Cities and districts maintain a range of recycling centres that accept used batteries. Mobile hazardous waste collections (e.g. in Stuttgart, Heilbronn or Karlsruhe) also accept starter batteries. Here the deposit mechanism does not apply; you do not receive any money, but disposal is also free of charge. Important: always bring the battery in an upright position and protect the terminals with the original caps or adhesive tape.
Direct drop-off at Electronicx in Cleebronn
Do you live in the Stuttgart/Heilbronn region? You are welcome to visit us during our opening hours at Hindenburgstraße 37A, 74389 Cleebronn. Simply bring your old battery with you – we will take care of proper dismantling. A call to +49 7135 7194106 in advance will clarify whether a special promotion for the car battery replacement is currently running. After a brief inspection (case damage, leaking acid), we will accept the battery and, on request, issue you with a disposal certificate.
The recycling process: how new raw material is created from your old battery
Regardless of whether it is a conventional wet battery with 12 V and 60 Ah or a high-performance AGM version with 70 Ah and 760 A, the route through the recycling plant follows a precise sequence:
1. Collection and sorting
After take-back, the battery is first inspected. Is it damaged? Is acid leaking? If necessary, it is packed in an acid-resistant container. It is then transported by collective logistics to a certified initial treatment facility. There, the type, weight and condition are recorded and starter batteries are separated from LiFePO4 systems, as the latter require a special pyrometallurgical process.
2. Dismantling and material separation
In the breaker or shredder, the casing of the lead-acid battery is crushed. The fragments fall into a water bath: plastic (polypropylene) floats on top, lead and lead paste sink. The diluted sulphuric acid is pumped off and neutralised. From an 80 Ah AGM block with a total weight of around 25 kg, this yields a good 15 kg of lead metal, 2.5 kg of paste and 7.5 kg of plastic.
3. Recovery of the raw materials
The recovered components go to specialised smelters and processors: lead and lead oxide flow back into battery production. The polypropylene granulate is injection-moulded and processed into new casings and lids for starter batteries. The neutralised acid often ends up as sodium sulphate and serves as a filler in detergents. Only minimal residual fractions that cannot be materially recycled are used for thermal recovery.
Comparison: battery types and their recyclability
The following table shows how the common starter and on-board power supply batteries differ and how well their components can be recovered:
| Battery type | Typical technical values | Recyclable main materials | Recycling rate (approx.) | Special features |
|---|---|---|---|---|
| Conventional wet battery (Pb-acid) | 12 V, 60–77 Ah, 540–680 A (CCA) | Lead, polypropylene, diluted sulphuric acid | > 96 % (material) | Is placed in the breaker; deposit €7.50 |
| AGM (Absorbent Glass Mat) | 12 V, 70–105 Ah, 760–950 A (CCA), cycle-resistant | Lead, glass fleece, plastic, acid bound in the fleece | > 96 % | Acid is immobilised – no free leakage; similar breaker process |
| EFB (Enhanced Flooded Battery) | 12 V, 65–80 Ah, 650–750 A (CCA), increased cycle resistance | Lead-calcium alloy, polypropylene, sulphuric acid | > 96 % | Liquid acid; recovery analogous to wet battery |
| Gel battery (VRLA) | 12 V, 50–80 Ah, medium starting currents, very cycle-resistant | Lead, silica gel as bound acid, plastic | > 96 % | Thickened acid is extracted by suction before breaking |
| LiFePO4 battery (lithium iron phosphate) | 12 V, 40–150 Ah, 100–300 A continuous current, 2000–5000 cycles | Lithium, iron, phosphate, aluminium, copper, plastic | 50–70 % (as at 2026, mechanical and hydrometallurgical processes) | No deposit under the BattDG for starter battery types, but take-back; separate process required |
As the list shows, the focus of high-quality recovery is on lead batteries. Detailed information on the individual technologies can be found in our article 12-volt battery guide.
Costs: how disposal of your car battery remains free of charge
The financial aspect often causes confusion – yet it is clearly regulated: returning a starter battery is always free of charge for consumers. Why?
The deposit as an offsetting item
As described in the section on the Battery Act, you pay a deposit of 7.50 euros when you buy a new lead-acid battery. If you return your old battery, you receive this amount back or it is offset directly against the purchase price. You therefore only pay for the goods themselves – disposal itself does not cost you anything.
Take-back without a new purchase
Even if you simply want to dispose of an old battery without buying a new one, may retailers refuse to take it back? No: the BattDG obliges them to take it back even without linking it to a new purchase. However, in that case you have no deposit claim. Nevertheless: Drop-off is free of charge. Electronicx also accepts individual old batteries in household quantities. Simply bring the battery to our address in Cleebronn – we take care of the rest.
Exception LiFePO4
Lithium-based vehicle batteries are currently not covered by the deposit system. Nevertheless, retailers are obliged to take them back free of charge if they stock this battery type. Make sure that for a LiFePO4 battery you always choose the appropriate recycling route – we will be happy to advise you.
Frequently asked questions (FAQ) about car battery recycling
Do I have to pay a deposit when buying a battery?
Yes, if you buy a lead-acid starter battery. Under § 19 BattDG, a deposit of 7.50 Euro must be charged if you do not return an old battery at the time of purchase. The deposit is refunded when you hand in the old battery to the seller or present a return receipt from another collection point that is no more than two weeks old. Further details can be found on our deposit page.
Can I also hand in my old car battery at a petrol station?
Petrol stations are only obliged to take batteries back if they sell starter batteries. However, most petrol station shops do not stock vehicle batteries and therefore refuse to accept them. It is better to use a retailer, a recycling centre or come directly to Electronicx in Cleebronn.
What happens to the battery acid during recycling?
The diluted sulphuric acid is drained and neutralised. The resulting sodium sulphate is used as a filler in the detergent and glass industries. Part of the acid is regenerated into sulphuric acid in special plants and returned to the economic cycle. There are no direct environmental impacts when handled properly.
Are AGM and EFB batteries also fully recycled?
Yes, AGM and EFB are processed in the same process as conventional flooded batteries, as they also consist of lead, plastic and sulphuric acid. With AGM, only the draining of liquid acid is omitted, as it is bound in a glass mat. The breaker process separates the materials just as effectively as with classic batteries.
Can I return defective or leaking batteries?
Of course. Damaged casings, swollen batteries (often due to overcharging) or leaked acid are no problem for take-back. For your own safety, wear acid-resistant gloves and transport the battery upright in a closed container. Our staff are trained to accept them.
Does the deposit also apply to my old 6-volt battery?
6-volt batteries are used in classic cars or tractors. They are starter batteries within the meaning of the BattDG and are subject to the same deposit and take-back obligation as 12-volt batteries. Here too, the deposit is 7.50 Euro. Electronicx accepts them – contact us on +49 7135 7194106.
What is the difference between a deposit and a take-back commitment?
The deposit is a legally fixed advance payment that ensures the battery enters the recycling cycle. There is no such thing as a “take-back commitment” for car batteries – neither as a term nor as a separate commitment. Take-back is based exclusively on the Battery Act and concerns proper disposal. Further information on the correct handling of the old battery can be found in our disposal guide.
How does disposal work for a battery ordered online?
You order, for example, a new 70 Ah EFB battery on electronicx.de and then hand in your old battery free of charge: after a brief arrangement with us in Cleebronn or at a recycling centre, a workshop or a retailer. Starter batteries may not be sent back by post as hazardous goods. A deposit of €7.50 paid at the time of purchase is refunded on drop-off or against a return receipt from another collection point that is no more than two weeks old.
Electronicx GmbH – your partner for battery recycling and environmental protection
As a medium-sized company from Baden-Württemberg, we place the utmost value on sustainable material flows. Our address: Electronicx GmbH, Hindenburgstr. 37A, 74389 Cleebronn (Managing Director: Andreas Emschanow, VAT ID No. DE300176428, HRB 752730 Stuttgart District Court). For years, customers have trusted our expertise. Whether you need a service life analysis of your current battery, are looking for the right charging instructions for 12 V batteries or would like to understand a new AGM battery – our team is available by phone or by e-mail at [email protected].
We hope that this guide has answered all your questions on the subject of car battery recycling. Benefit from a system that is free of charge for you, relieves the burden on the environment and preserves raw material security for future generations.