Sodium Ion Battery
Series and Parallel
Chargeable
Medium Discharge Rate
Medium
Battery
Car/Boat/Car Starting
Support
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12V 40Ah Na+ Battery for Car/Boat/Car Starting Sodium ion Battery Common customization:
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The 12V 40Ah Na⁺ sodium-ion battery is an advanced starting power solution designed for cars, boats, and other engine starting applications. Using innovative sodium-ion (Na⁺) technology, this battery delivers reliable cranking power, excellent safety, and strong performance in low-temperature environments, making it a modern alternative to traditional lead-acid starter batteries.
Reliable 12V Starting Power
Provides strong and stable output for quick and dependable engine ignition.
Advanced Sodium-Ion Technology
Utilises abundant sodium resources, offering a more sustainable and cost-effective alternative to lithium and lead-acid batteries.
Excellent Low-Temperature Performance
Maintains reliable starting performance in cold climates where conventional batteries often struggle.
High Safety & Thermal Stability
Sodium-ion chemistry is inherently stable with low risk of thermal runaway or fire.
Fast Charging Capability
Supports rapid charging and quick energy recovery.
Lightweight & Durable Design
Lighter than traditional lead-acid batteries while offering improved durability and vibration resistance.
Maintenance-Free Operation
No electrolyte refilling or regular maintenance required.
| Items | Parameter | |
| Battery model | MC-SIB12230P | |
| Nominal voltage | 12.4V | |
| Minimum capacity | 40Ah@25ºC,C10 | |
| Charging voltage | 16V | |
| Discharging cut-off voltage | 8V | |
| Standard charging | 0.2C /14.4V | |
| Max charging | 1.0C /14.4V | |
| Standard discharging | 1C/8V | |
| Max discharging | continuous discharge | 1.0C/8V |
| non-continuous discharge | 2.0C/8V | |
| Operation voltage | 8~16V | |
| Operating temperature | Charging: 0°C ~ 45°C | |
| Discharging: -30°C ~60°C | ||
| Storage (At 50% SOC and specified temp, recoverable capacity in % vs time ) | -10ºC~25ºC | (12 months ≥85% ) |
| -10ºC ~45ºC | (6 months ≥85% ) | |
| -10ºC~55ºC | (1 month ≥90% ) | |
| 20±5ºC is the recommended storage temperature | ||
| Visual Inspection | There should not be any remarkable scratches, cracks, bolts, cauterization, deformations, swelling, leakage and so on the surface of the cell. | |
| Self-discharge Rate | <2% per month | |

Detailed Photos

Why choose us
Explore sodium-ion batteries for automotive starting, including CCA, cold-weather performance, charging compatibility, safety, and key selection factors.
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Discover how sodium-ion batteries perform in cold climates, compare them with LiFePO4, and explore charging, solar storage and backup power applications.
Explore sodium-ion battery operating temperature ranges, charging and discharging limits, low- and high-temperature performance, safety considerations, and thermal management strategies.
We are pleased to announce that MICAPOWER will participate in electronica 2026, the world's leading trade fair and conference for electronics, taking place from November 10 to 13, 2026, at the Trade Fair Center Messe München in Munich, Germany.
Learn how to choose a sodium-ion battery manufacturer based on cell quality, production capability, BMS, certifications, testing, customization, supply chain, warranty and total cost. A practical guide for OEM, ODM and energy-storage buyers.





