Safe, cost-efficient, and eco-friendly solutions engineered for modern start-stop vehicles.
For over a century, lead-acid batteries have dominated the vehicle start-stop market. However, lithium-ion batteries struggle with cold-start performance and cannot fully meet the high current demands of starting applications. In contrast, sodium-ion batteries deliver excellent low-temperature discharge characteristics — they can sustain a 10C pulse discharge even at –28°C, making them exceptionally reliable in cold environments. In terms of Cold Cranking Amps (CCA), sodium-ion batteries even outperform traditional lead-acid batteries.
Unlike lead-acid batteries, which must avoid over-discharge to prevent irreversible capacity loss, sodium-ion batteries are far more resilient. They can safely discharge down to 0 V without damaging the cells, and their capacity is fully restored upon recharging. Additionally, while lead-acid batteries require recharging every three months to maintain performance, sodium-ion batteries can remain in storage for up to 12 months without degradation.
From a sustainability perspective, sodium-ion technology also stands out. Sodium makes up 2.3% of the Earth’s crust, ranking sixth among all elements, and is abundantly available both on land and in seawater. Compared with lead-acid batteries, sodium-ion batteries are completely eco-friendly — they contain no heavy metals and are 100% recyclable, making them a truly sustainable solution for modern vehicles.
We develop batteries based on your exact needs, including voltage, capacity (12V 30Ah/ 40Ah/ 50Ah/ 60Ah/ 80Ah), casing, and connection layout.
With advanced equipment and strict quality control, our factory ensures stable output and consistent product performance.
Warehouses in the US, Canada, and EU allow us to reduce lead times and provide faster support to local customers.
All batteries undergo full testing and meet international standards such as UN38.3, CE, and IEC 62619 for safe global distribution.
Engineered for automotive start-stop systems, our sodium-ion batteries deliver stable 12V output, high cold-cranking performance up to 1000 CCA, and over 2000 full-depth cycles.
Each model features an integrated BMS for precise voltage management, short-circuit protection, and temperature monitoring, ensuring optimal safety and performance under real-world operating conditions.
Compatible with existing vehicle electrical architectures, they provide a cost-efficient, maintenance-free, and environmentally responsible alternative to lead-acid solutions.
A1: Yes. We customize voltage, capacity (12V 30Ah / 40Ah and beyond), casing, terminals, and BMS functions to your project requirements. OEM/ODM with NDA is supported.
A2: Products are tested to UN38.3 and supported with CE, IEC 62619, and MSDS documentation for safe transport and market compliance.
A3: Standard models: 15–25 days. Custom solutions (including tooling/testing): typically 30–40 days. With warehouses in the US, Canada, and the EU, we can ship faster from local stock when available.
A4: Samples: 5–10 pcs. Mass production: usually 500–1,000 pcs depending on customization (BMS spec, casing, connectors, labeling).
A5: Full raw-material traceability, cell matching and precision welding, multi-stage aging tests, and 100% outgoing inspection. Warranty and after-sales support included.
A6: Yes. We offer private labeling, packaging design, and documentation packs (spec sheets, test reports, shipping guidance) aligned to your brand.
Share your voltage, size, application, and quantity needs—we’ll assess your project quickly.
Our engineers will optimize the design, confirm details, and provide samples if needed.
Once approved, we start production and arrange fast, secure shipping to your destination.
Need a custom lithium battery pack? Just send us your specs—we’ll help you choose the right voltage, case, and configuration for your application.
At JUNDA, we make customization easy. Follow these 3 simple steps to start today:
Send your battery requirements — voltage, capacity, casing type, or upload drawings/photos.
We’ll evaluate your specs and recommend the best configuration. A detailed quote will be sent within 24 hours.
After approval and deposit, we start production. Shipping and tracking will be arranged for fast, secure delivery.
