Solar and energy storage batteries are stationary lithium-ion systems, from wall-mounted home units to containerized utility racks, and they are most often LFP today with NMC and NCA in some products. They can hold large amounts of stored energy at decommissioning, so de-energizing and removal should be done by qualified people. This page covers identification, hazards, preparation, shipping and recycling economics.
How do you identify a solar or energy storage battery?
Look at the nameplate, which lists the manufacturer, model, nominal voltage, usable and nameplate energy in kilowatt-hours, and often the chemistry. Residential units are typically wall-mounted or floor-standing cabinets, commercial systems use cabinets or racks of modules, and utility-scale systems are packaged in outdoor enclosures with their own cooling and fire suppression. A battery management system and a DC disconnect are standard features. Never guess chemistry from size alone, because very different batteries can share a similar case.
LFP has become the dominant chemistry in stationary storage because it is stable, long-lived and free of cobalt and nickel. Some earlier or compact products use NMC or NCA. Older solar installations may use lead-acid batteries, which are a different recycling stream. The battery module part number, serial number and system record from the installer are the most reliable way to confirm chemistry, weight and whether a unit is under warranty or recall.
- Nameplate: energy rating in kWh, voltage, chemistry, serial number
- Formats: wall units, rack modules, containerized systems and stacked cabinets
- Paperwork: installer records, warranty and manufacturer decommissioning guidance
What are the hazards of stationary storage batteries?
The main hazards are stored energy and thermal runaway. Even a retired module can hold charge, and multiple modules wired in series can reach dangerous DC voltage. Stationary systems are designed with enclosures, cooling and protection circuits that may be compromised when disconnected or damaged. A module with swelling, heat damage, water exposure or a failed management system should be treated as damaged.
Do not open a cabinet or disconnect modules unless you are trained. Isolation of the system from solar arrays, inverters and the grid is an electrician’s job, and decommissioning should follow the manufacturer’s procedure. Keep modules dry, indoors or under cover, away from combustibles and ignition sources, and ventilated. Do not stack modules unsecured, and keep a fire plan that accounts for lithium-ion thermal events and toxic smoke. A battery that has been wet or dropped hard should be isolated even when it seems to work normally.
How should you prepare storage batteries for recycling?
Have a qualified installer or electrician shut down the system, isolate it from the array, inverter and grid, and verify zero hazardous voltage at the connection points before removal. Remove modules according to the manufacturer’s instructions and cap or insulate exposed terminals and busbars. Do not attempt to cut cables or open sealed modules. Record the state of charge, the number of modules and the nameplate details.
Place modules on pallets or in racks, secured so they cannot tip or short. Keep different chemistries separate. If a module is leaking, swollen, hot or damaged, isolate it outdoors or in a fire-rated area and tell the recycler it is damaged. Photographs of nameplates, damage and stacking help us determine whether standard packaging is possible. For containerized systems, discuss on-site discharge and removal planning with the manufacturer first.
- De-energize and verify voltage before touching any module
- Cap terminals, keep modules dry and upright, and secure them on pallets
- Document nameplates, state of charge and condition
How are energy storage batteries classified and shipped?
Lithium-ion modules and batteries shipped alone are UN3480, and those contained in equipment such as a cabinet are UN3481, both Class 9 under 49 CFR 173.185. Most storage modules exceed 12 kilograms, so large-battery provisions apply, which generally allow strong outer packaging or fitted frames when the battery is protected from damage and short circuits. Ground transport is the practical mode, and air transport is not realistic for modules of this size.
Damaged, defective or recalled storage batteries are governed by 49 CFR 173.185(f) and need packaging suited to contain a thermal event, along with correct marking. Some situations require special approval. Do not load modules with their original wiring live. Before pickup, we confirm the classification, number of units, weight and loading method. A forklift or liftgate is often needed, and freight scheduling for heavy modules should account for dock access.
How do installers and businesses handle these batteries as universal waste?
Spent lithium storage batteries can be managed as universal waste under 40 CFR Part 273 when destined for recycling, in line with EPA’s May 2023 memo explaining that most lithium battery waste is hazardous waste that can use that pathway. Installers who swap out failed modules, commercial property owners and utilities should keep them in closed, labeled, protected containers and observe the one-year accumulation limit. Storage modules are heavy, so a site can reach 5,000 kilograms of universal waste quickly and become a large quantity handler, which adds notification and an EPA identification number.
Ownership matters. A solar installer removing a battery from a customer site needs clarity about who generates the waste and who signs. Keep records of what was removed, when and to whom it was sent. Employees handling modules should be trained on electrical safety and thermal events. State rules vary and may be stricter for hazardous waste or battery storage, so check the state page for the site where the modules are stored.
What is recovered from storage batteries, and what affects cost?
Storage batteries yield aluminum, copper and steel from enclosures and busbars, plus battery materials from cells. NMC and NCA modules yield cobalt, nickel, lithium and graphite through black mass processing. LFP modules contain lithium, iron phosphate, copper, aluminum and graphite, but no cobalt or nickel, so their metal value is lower, though lithium recovery from LFP is gaining attention. Hydrometallurgy, pyrometallurgy and direct recycling are the main routes.
Weight, chemistry, condition and logistics drive cost. LFP generally carries less recoverable value than NMC, so LFP-heavy loads are more likely to represent a recycling cost. Large modules need heavy freight, special packaging and possibly on-site labor. Volume helps, since a full truckload costs less per module than a single unit. Because market and logistics conditions vary, we quote after you share chemistry, module count, weight, condition and location.
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Frequently asked questions
Can I recycle a home battery myself?
No. Home storage batteries are heavy, high-energy systems that need qualified de-energizing and removal. Contact your installer or an electrician, then we can quote recycling.
Is an LFP storage battery worth less than NMC?
Generally yes for metal value, because LFP has no cobalt or nickel. LFP is still recyclable and often cheaper to handle safely.
What if my storage battery is under warranty or recall?
Contact the manufacturer first, since take-back or replacement terms may apply. Tell us if the unit is recalled so it is shipped properly.
How is a whole cabinet shipped?
As lithium batteries contained in equipment (UN3481) or as separated modules (UN3480), depending on design and condition. We confirm which approach fits before pickup.
Do old lead-acid solar batteries follow the same process?
No. Lead-acid batteries are a different stream with their own recycling channels. Tell us what you have and we will point you to the right option.
How should modules be stored while waiting for pickup?
Keep them dry, upright and secured on pallets, away from combustibles and in a space with fire protection. Isolate any damaged module.