Automotive & Starting Batteries
Automotive Start-Stop Sodium-ion Battery
Engineered to replace lead-acid start-stop batteries, KEXINGYU’s automotive sodium-ion battery series delivers dependable starts across an ultra-wide -40°C to 80°C temperature range. Built on high-safety polyanion sodium-ion cells, it is 60% lighter than lead-acid, requires zero maintenance for the life of the vehicle, and is backed by a 36-month warranty. Available in Endurance and Cold-climate variants across the H5–H9, Q85, and S95 case sizes, with OEM/ODM support for fleet operators, distributors, and vehicle manufacturers.
Key Features
A start-stop battery designed for real-world driving: extreme temperature tolerance, a lifespan that matches the vehicle, and none of the maintenance burden of lead-acid.
Extreme Cold Start
Normal performance and reliable one-button start-up even at -40°C, with no loss of cranking power in winter conditions.
Extreme Heat Resistance
Stable operation and start-up at 80°C inside the engine bay, with no performance degradation in summer heat.
Ultra-Long, Maintenance-Free Lifespan
Rated for 3,000+ charge/discharge cycles, with a service life that matches the vehicle and requires no maintenance.
Lightweight Design
60% lighter than an equivalent lead-acid battery, reducing vehicle weight without compromising cranking power.
Ultra-Low Self-Discharge
Monthly self-discharge under 3%, so the battery holds its charge through long parking periods or seasonal storage.
36-Month Extended Warranty
36 months of warranty coverage from installation, backed by a responsive after-sales service network.
OEM & ODM Capabilities
KEXINGYU supports fleet operators, distributors, and vehicle manufacturers with fully customized automotive sodium-ion battery programs, from case sizing to branded packaging.
Custom Case Sizing
H5–H9, Q85, and S95 case formats available, with custom dimensions on request for specific vehicle platforms.
Tailored CCA & Capacity
Cold cranking amps and Wh capacity can be tuned to match specific vehicle models and climate requirements.
Branded Labeling & Packaging
Private-label casing, packaging, and warranty cards produced under your brand identity.
Configurable BMS Protocols
BMS communication and protection thresholds can be adapted to match your vehicle diagnostics requirements.
Certification Support
Assistance with UN38.3, MSDS, and regional compliance documentation for import and distribution.
Flexible MOQ & Logistics
Scalable order quantities with global shipping support for distributors and fleet accounts.
Technical Specifications
Full model range across the Endurance series (standard) and Cold-climate series (enhanced low-temperature capacity), covering seven case sizes from H5 to S95.
| Cell Chemistry | Polyanion sodium-ion |
|---|---|
| Standard Voltage | 12V |
| Operating Temperature Range | -40°C to 80°C |
| Cycle Life | ≥3,000 cycles |
| Self-Discharge Rate | ≤3% per month |
| Warranty | 36 months from installation |
| Case Sizes | H5, H6, H7, H8, H9, Q85, S95 |
| Compliance | GB/T 44265-2024, UN38.3 |
| Series | CCA Range | Capacity Range |
|---|---|---|
| Endurance | 660–1000A | 336–504Wh |
| Cold-climate | 660–1000A | 440–650Wh |
| Starting Efficiency | 2x traditional lead-acid | |
| Standard Voltage | 12V across all models | |
| Model | Series | Standard Voltage (V) | Power Capacity (Wh) | CCA (A) | Dimension L×W×H (mm) | Polarity |
|---|---|---|---|---|---|---|
| KXY-NaQH H5-660 | Endurance (H5) | 12 | 336 | 660 | 242x175x190±3 | Left (-), Right (+) |
| KXY-NaQH H6-700 | Endurance (H6) | 12 | 336 | 700 | 280x175x190±3 | Left (-), Right (+) |
| KXY-NaQH H7-750 | Endurance (H7) | 12 | 420 | 750 | 315x176x187±3 | Left (-), Right (+) |
| KXY-NaQH H8-850 | Endurance (H8) | 12 | 420 | 850 | 353x176x187±3 | Left (-), Right (+) |
| KXY-NaQH H9-1000 | Endurance (H9) | 12 | 504 | 1000 | 398x176x187±3 | Left (-), Right (+) |
| KXY-NaQH Q85-680 | Endurance (Q85) | 12 | 336 | 680 | 231x175x200±3 | Left (-), Right (+) |
| KXY-NaQH S95-850 | Endurance (S95) | 12 | 336 | 850 | 260x175x200±3 | Left (-), Right (+) |
| KXY-NaQG H5-660 | Cold-climate (H5) | 12 | 440 | 660 | 242x175x190±3 | Left (-), Right (+) |
| KXY-NaQG H6-700 | Cold-climate (H6) | 12 | 460 | 700 | 280x175x190±3 | Left (-), Right (+) |
| KXY-NaQG H7-750 | Cold-climate (H7) | 12 | 540 | 750 | 315x176x187±3 | Left (-), Right (+) |
| KXY-NaQG H8-850 | Cold-climate (H8) | 12 | 580 | 850 | 353x176x187±3 | Left (-), Right (+) |
| KXY-NaQG H9-1000 | Cold-climate (H9) | 12 | 650 | 1000 | 398x176x187±3 | Left (-), Right (+) |
| KXY-NaQG Q85-680 | Cold-climate (Q85) | 12 | 450 | 680 | 231x175x200±3 | Left (-), Right (+) |
| KXY-NaQG S95-850 | Cold-climate (S95) | 12 | 560 | 850 | 260x175x200±3 | Left (-), Right (+) |
Construction & Configuration
Built around high-safety polyanion sodium-ion cells with an integrated BMS, engineered specifically for automotive start-stop duty cycles.
Polyanion Sodium-ion Cells
High-safety cells that have passed nail penetration, compression, and short-circuit testing without fire or explosion.
Integrated Smart BMS
Monitors battery health 24 hours a day and issues early warnings for potential faults, improving safety and reliability.
Reinforced Case & Terminals
Impact-resistant case with standard automotive terminal layout and left-negative/right-positive polarity.
Thermal Stability
Stable discharge and start-up performance maintained across the full -40°C to 80°C operating range.
Corrosion-Free Operation
No acid mist or corrosive off-gassing, protecting battery poles and surrounding engine bay components.
Sealed Safety Venting
Sealed design with dedicated pressure relief pathways to contain and manage fault conditions safely.
Standards & Test Documentation
Compliant with national and industry standards for sodium-ion power storage, with full documentation for global shipping.
National Sodium-ion Battery Standard
Complies with the national standard GB/T 44265-2024, "Technical Specifications for Sodium-ion Batteries in Power Storage Stations."
Automotive Start-Stop Systems
Developed as a participating unit in the group standard for sodium-ion batteries used in automotive start-stop systems.
Certified for Global Shipping
Full hazard classification, DGM air freight and sea freight documentation, MSDS, and UN38.3 test summary available on request.
Ready to Power Your Fleet with Sodium-ion Technology?
Tell us your vehicle platform and climate requirements, and our engineers will recommend the right case size and series. OEM/ODM programs available.