sheet metal fabrication
Precision Engineering for Global OEMs
Custom Battery enclosure services
Metal battery enclosures are designed to improve the stable operation and service life of energy storage batteries. With the wide application of lithium batteries, customized battery enclosures need to be multifunctional and aesthetically pleasing, Supro MFG specializes in the design and manufacture of customized battery enclosures, providing a wide range of high quality energy storage battery enclosures with high mechanical strength, waterproof and dustproof to meet the NEMA / IP protection level, and suitable for thermal management systems, Battery packs, inverters, BMS, BDUs and other equipment integration of multi-functional customized battery enclosures.
solar battery enclosure
nema4/3r battery enclosure
outdoor battery enclosure box
weatherproof battery enclosure
lithium ion battery enclosure
wall mount battery enclosure
Rapid Prototypes, DFM Optimization, On-Time Delivery, Real Manufacturer Quote.
Rapid prototype Turnaround
Committed to exceeding expectations for quality and rapid turnaround, and meeting high-quality sheet metal parts.
Consistency & high quality
Whether it is rapid prototyping & large-volume manufacturing, we will implement it according to customer needs and standards.
Low Cost Effective
Integrate product design, bending, stamping, cutting, surface treatment, etc. to provide a series of manufacturing solutions.
Custom Battery Enclosure Manufacturer
The metal battery enclosure is one of the most important components of an energy storage battery project, providing effective protection and support for the integrated system of cells, thermal management system, battery management system (BMS), inverters, etc. It protects the cells from the risks of mechanical shocks, vibrations, and environmental erosion. Battery enclosure is the “bones and armor” that protects all components of the highly dangerous and costly energy storage battery system.
Typically, we use high-strength structural steel or stainless steel as the raw material for energy storage battery enclosures, to avoid damage from impact, compression, temperature and humidity, and corrosion caused by harsh environmental factors, to ensure stable operation of the internal system, and to increase the service life. However, there is still a need to keep battery enclosure lightweight and competitively cost-effective.
Battery enclosures have the same characteristics as other electrical enclosures, and it is very important to ensure excellent insulation to avoid the risk of electrical short circuits, which requires rational design of internal brackets and wire connectors.
We serve a wide range of industries worldwide in the manufacture of outdoor and indoor storage battery enclosures, providing enclosure designs that meet a wide range of use environments and functional requirements, including: NEMA 4 /3r IP66 or higher battery pack enclosure protection and IP55 or higher containerized storage battery enclosures, preventing dust ingress and withstanding strong water impacts or splashes, ensuring safe, reliable, and stable operation of storage batteries in a variety of harsh environments.
Challenging and versatile extension design.
At Supro MFG, we have a team of technical designers and fabricators with expertise in energy storage battery installation and application knowledge to customize multifunctional energy storage battery pack enclosures for different environments and functional requirements.
We have participated in more than 100 different types of battery enclosure design and manufacturing projects, and actively propose cost-effective design suggestions for our customers, including: outdoor storage battery pack enclosure, outdoor wall-mounted battery enclosure, solar air-cooled storage battery cabinet enclosure, modular liquid-cooled Li-ion battery pack enclosure, multi-functional battery pack inverter enclosure, and so on.
In response to the demand for non-standard battery enclosures, we are actively engaged in the design and manufacture of customized metal enclosures, through high quality products, efficient responsive manufacturing, flexible functional design and competitive factory prices, is the reason why we have become the leader in the customized enclosure industry, 95% of our business is for non-standard customized battery enclosures, so you don’t need to take any risk.
One-Stop Solution for Custom Metal Parts
Comprehensive Metal Fabrication Services
Looking for reliable metal fabrication companies?
Supro MFG offers one-stop custom metal fabrication, laser cutting, and CNC machining. Expert DFM, high precision, and fast global shipping.
Sheet Metal Fabrication Services
Aluminum Extrusion Services
Precision Metal Stamping
Metal Welding Fabrication
CNC Machining Services
Laser Cutting Services
Metal Spinning Services
Deep Drawing Stamping Services
metal die casting Services
Common Issues with Battery Enclosure
In electric vehicles (EVs), energy storage systems (ESS), and heavy-duty industrial applications, battery enclosures serve not only as physical enclosures but also as critical structural components involved in thermal management, electrical insulation, and crash safety. Based on extensive customer engineering feedback and high-end sheet metal manufacturing standards, we have identified several defects that are both real and frequently encountered in battery enclosure manufacturing.
Bottom Co-planarity Exceeding Tolerance Limits
An uneven battery enclosures bottom prevents internal battery modules, mounting brackets, or bottom liquid cooling plates from fitting tightly, leading to localized heat dissipation failure or excessive assembly stress. The primary causes include: material springback during stamping or bending; warping of the base plate due to excessive heat input during welding; and the lack of specialized flatness correction fixtures.
Supro employs high-tonnage hydraulic presses for post-welding precision flattening/leveling. For large base plates, we recommend incorporating reverse camber (pre-compensation) design during the tooling phase. Prior to shipment, 100% inspection via 3D laser scanning or feeler gauges on a marble platform is mandatory to ensure flatness tolerances are maintained within the range of 0.5mm to 1.0mm.
Vibration Fatigue and Resonance Cracking
After prolonged road profile vibration testing, fatigue tearing occurs on the load-bearing side walls or bottom lugs of the battery enclosure. The causes include: insufficient design margin in sheet thickness; lack of effective vibration-damping stiffeners; and resonance triggered by the system’s natural frequency coinciding with external excitation frequencies.
Supro incorporates CAE finite element analysis (FEA) in the early design phase to simulate random vibration and impact conditions. In stress concentration areas, we employ laser-welded thin-walled (TWB) technology or stamp reinforced grid-shaped ribs at critical locations to alter the modal frequency of the battery enclosures.
Risk of Internal Burr Puncture
Sharp edges or punching burrs on the inner walls or flange edges of sheet metal parts may puncture the battery pack’s insulating separator or high-voltage wiring harness during vehicle vibrations, causing catastrophic short circuits. This issue primarily arises from: unstable laser cutting gas pressure causing slag buildup; excessive clearance in stamping dies; and incomplete deburring during post-processing.
How can this be resolved?
Drawings must strictly specify deburring requirements. Automated grinding and chamfering equipment or fluid polishing processes should be introduced on the production line to ensure that all internal contact surfaces have smooth edge transitions (e.g., R0.5 chamfers), thereby completely eliminating the risk of puncture.
Surface Coating Blistering and Corrosion Protection Failure
In salt spray environments or when exposed to trace battery fluid leaks, the external powder coating or electrophoretic primer on battery enclosure may develop extensive blistering or peeling. The causes include: substandard degreasing and rust removal during pre-painting treatment; residual acid or alkali cleaning solutions in sheet metal gaps; and insufficient coating thickness, which is also a common contributing factor.
Supro has established a rigorous dual-layer corrosion protection system comprising “Cathodic Electrocoating (E-Coating) + Outdoor-Grade Powder Coating.” Product structural design should avoid dead corners to ensure the electrocoating solution can flow out smoothly. Each batch must pass a neutral salt spray test (NSS) of at least 1,000 hours.
No design files? Let Supro MFG do it for you.
We often come across clients who have no professional design drawings and documentation, only a creative idea, which leads to the project being at a standstill.
If you are in this situation, then contact our team of experts.
Supro MFG, as an industry-leading custom metal fabricator, has an ever-experienced team of engineers who utilize their extensive fabrication experience and technical expertise to build your idea into a real product and create design files such as STEP/STP/SLDPRT/DXF/PDF/PRT/DWG/AI.
That’s what makes SUPRO MFG so great, and 2,000 corporate, entrepreneurial, artist, and other purchasers from around the world enjoy working with us and benefiting from our one-stop manufacturing services.
Supro MFG's battery enclosure manufacturing advantages
- We put 100% effort into manufacturing each customized battery enclosure to meet the customer’s functional requirements, dimensional specifications, structural load bearing and other features.
- No matter outdoor, indoor, wall-mounted, stand-up or other creative designs, we can complete them with high quality and deliver them on time.
- Flexible selection of metal materials according to customer needs, such as: galvanized steel, color coated sheet, carbon steel, alloy steel, stainless steel, aluminum alloy, titanium alloy and so on.
- High-quality surface powder coating can effectively fight against various harsh corrosive environments and increase the service life of the products.
- Strictly adhering to the protection standards of NEMA 3r, NEMA4/4X or IP66 rating, all the delivered products will undergo strict destructive testing.
- Realization of multi-functional battery cabinet enclosure, which can build separate sealed compartments for mounting cells, inverters, thermal management systems, battery management systems (BMS) and other electronic equipment.
- Competitive ex-factory price quotation and on-time delivery of high quality products.
- Highly efficient response work and 24 hours*7 online after-sales service to keep you informed of the progress of your investment.
One-Stop Solution for Custom Battery enclosures
Typical Applications for Battery enclosure
Passenger Electric Vehicles (PEVs)
These vehicles prioritize maximum range and space utilization. Battery enclosure must simultaneously meet strict crash and crush resistance requirements, IP68-grade sealing standards, and ISO 6469 thermal runaway protection standards.
Commercial Electric Vehicles and Buses
These vehicles carry heavy loads and operate under complex daily driving conditions. Battery enclosures must feature ultra-high structural fatigue resistance, high load-bearing capacity, and a modular design that facilitates future maintenance.
Industrial and Residential Energy Storage Systems (ESS)
These systems operate in fixed outdoor locations over the long term and have massive capacities. Battery enclosures must prioritize long-term corrosion resistance, high-level fire resistance and flame retardancy, seismic resistance, and all-weather durability.
Electric Two-Wheelers and Micromobility
Installation spaces are compact, and these vehicles often face frequent vibrations and battery-swapping requirements. Battery enclosures must be portable and lightweight, highly impact-resistant, and provide excellent protection against drops and crushing.
Electric Heavy Equipment and Marine Vehicles
Operating environments involve severe salt fog, intense vibrations, and high-load impacts. Battery enclosure must meet marine-grade corrosion resistance, heavy-duty structural impact resistance, and high vibration-resistant sealing capabilities.
eVTOL and Electric Aviation
These applications are extremely sensitive to payload and have an extremely low safety margin. Battery enclosure must meet aerospace-grade requirements for extreme lightweight design, ultra-high structural rigidity, and the highest standards for thermal insulation and explosion protection.
Securing Your Designs with Enterprise-Grade Confidentiality at Every Stage of Manufacturing
Your Innovation, Protected:
Uncompromising IP Security & NDA Compliance
At Supro MFG, we understand that your designs are your most valuable assets. As a strategic sheet metal stamping partner, our commitment to your intellectual property is absolute. We operate under a strict Zero-Leak Policy, ensuring that every blueprint, CAD file, and prototype remains strictly confidential within our secure engineering ecosystem.
We proactively offer comprehensive Non-Disclosure Agreements (NDAs) that align with international legal standards, providing you with a transparent and enforceable framework for cooperation. Beyond legal paperwork, our internal protocols include segmented data access, secure server encryption, and rigorous staff training on IP sensitivity. Whether you are a startup scaling a disruptive product or an OEM managing sensitive aerospace components, Supro MFG acts as a secure extension of your own facility. Partner with a metal stamping manufacturer that values your competitive advantage as much as you do.
Why choose Supro MFG's battery enclosure Services
Supro MFG is a Chinese sheet metal manufacturer specializing in custom battery enclosures with over 30 years of manufacturing experience, ISO9001-2015 quality certification, and involvement in the design and manufacture of over 200 custom battery enclosure projects.
Provide the most cost-effective cost solution for manufacturing and assembling products, expanding product competitiveness.
a technical team specializing in custom shell manufacturing for more than 30 years.
Advanced Manufacturing Equipment: Industry-leading custom metal enclosure manufacturer with in-house sheet metal, die casting, precision machining workshops, and surface coating workshops.
ISO 9001-2015, PPAP III level, RoHS, NEMA, CE and other certified production standards.
24H*7 online English technical support: The professional English team responds quickly to users’ technical questions online at any time.
help users from product design, prototype, batch manufacturing, surface treatment, assembly and packaging, transportation and a series of value-added services.
With in-house mechanics and chemistry laboratories, it can quickly monitor manufacturing process quality control to ensure the delivery of high-quality products.
Accept to sign NDA documents to ensure that customers’ product information is protected.
Door-to-door delivery in customizable secure packaging after complying with the delivery details agreed with the customer.
A part is only as good as its finish.
High-Performance Surface Finishing: Aesthetics Meets Durability
At Supro MFG, we understand that professional custom metal fabrication requires more than just structural integrity—it demands surface treatments that withstand harsh environments and strict aesthetic standards.
Our integrated finishing shop provides a seamless transition from the production line to the final coating, ensuring tight control over lead times and quality.
online custom metal fabrication parts
Only 4 steps
Contact our experts team and experience the efficiency and economic benefits of digital metal fabrication services.
Upload Design Files
STL , STEP (.stp), IGES (.igs), (.ZIP), or PDF.
Also be a sample or an idea
Quote & Design Analysis
Instant factory quotes and DfM reports, the most reasonable solution.
Manufacturing Begins
Digital processes can initiate order tasks within 24 hours.
On-Time Delivery
Keeping delivery promises, approved by 3000+ Global Company buyers.
BLOG
F.A.Q
Supro MFG is a professional Chinese sheet metal manufacturer, we specialize in the design and manufacture of custom sheet metal parts fabrication and Sheet metal Prototype, ISO 9001-2015 certified, providing a full range of sheet metal parts fabrication solutions and technical support .
We are not a trader, all products are done in our in-house factory, we have a reliable supplier of surface treatment, heat treatment, and standard parts to support us, and we can provide you with economical sheet metal manufacturers ex-works prices.
We have our own sheet metal fabrication factory, welding workshop, laser cutting workshop, and precision CNC Machining workshop, with a total area of more than 3000 square meters, with 12 technical engineers, 36 skilled workers, 6 quality engineers, and a professional English sales team.
Of course, we keep all the customer's information confidential, sign a non-disclosure agreement, our factory will not allow unrelated personnel to enter without authorization, your product design and patented technology will be protected by us.
Yes, we have rich manufacturing experience and technical knowledge, can draw professional design files (including: STL/STEP/IGES/PDF/CAD, etc.) according to your ideas, and provide you with free manufacturability solutions. Actively help you optimize product design, reduce costs, and make your product design more dynamic in the sales market.
From raw materials to finished packaging, we will provide you with reliable quality inspection reports and photos at any time. If you need an authoritative third-party inspection report, we can also actively cooperate to ensure that you will receive high-quality products.
T/T, Paypal western union, L/C, and other channels you suggest (contact us for negotiation).
Yes, we can provide system documentation for PPAP level3.
Our quotations are all factory quotations from manufacturers, and all manufacturing costs and labor costs are traceable. We all use the raw materials of authoritative manufacturer brands, refuse to cut corners, and all products are subject to our quality control.
While there are plenty of small businesses that offer you a very low price, the quality can be at risk.
What your project needs more is the guarantee of high-quality products and on-time delivery, not high-risk.
We do not set a minimum order quantity. Whether you need a small amount of prototypes or large quantities, we will treat you equally and provide you with a full range of manufacturing services and technical support.
We will develop a detailed production plan, every point in time will be practically verified, and all processes are under our monitoring to ensure on-time delivery of high-quality products. (Except for the influence of force majeure factors)
Once there is a signal of delay, we will organize more production capacity to ensure on-time delivery.
Looking for a reliable custom metal outdoor enclosure Services?
Talk To Supro MFG Expert Team
Contact us for competitive ex-factory prices,
and a full range of technical support services.