Frequently Asked Questions

• Will switching to an Aeson Power sodium-ion starting battery lower costs?

  Lower Total Cost of Ownership: Although the initial purchase cost is higher than that of regular lead-acid batteries, because its lifespan is more than 3 times longer, it saves on the labor and time costs of frequent replacements.

  Improved Fuel Economy: The battery significantly reduces weight (by over 10 kg). Coupled with its more efficient charge acceptance capability, testing has proven it can deliver up to 5% fuel savings for internal combustion engine vehicles.

  
  

• How does the Aeson Power sodium-ion starting battery tolerate such a harsh environment?

  The high temperature of the engine bay is the Achilles' heel of traditional batteries (lead-acid is prone to bulging, lithium is prone to overheating and catching fire). However, Aeson Power sodium-ion batteries utilize a polyanionic framework structure with extremely high thermal stability. Their thermal runaway critical point is much higher than that of traditional batteries. Under the extreme heat of an 80°C engine bay, the structure suffers no damage, and no internal vaporization occurs. Combined with the high-temperature charging protection of the intelligent BMS, safety hazards such as leakage and deflagration are mitigated, ensuring that its lifespan is not compromised under high temperatures.

• Why are Aeson sodium-ion starting batteries over 60% lighter than traditional lead-acid batteries?

  Generational Difference in Materials: The core positive and negative electrodes of sodium-ion batteries use lightweight carbon materials and polyanionic compounds, and the internal electrolyte is replaced with a lightweight organic solvent. The density of these materials is far lower than that of heavy metallic lead.

  3x Difference in Energy Density: The energy density of traditional lead-acid batteries is usually only 30-50 Wh/kg, whereas the energy density of Aeson Power sodium-ion batteries can reach 100-140 Wh/kg. This means that under the premise of storing the same amount of electricity and providing the same cranking current, the weight of the active material required by a sodium battery is less than one-third of that of a lead-acid battery.

  
  

• What is the charging voltage? What is the full charging voltage?

  Charging voltage range: 14.4~14.8 V. Recommended maximum charging voltage is 14.6V (12V).

  Usually the open circuit voltage is between 13~14.5V after fully charged and rest for about 30min.

  
  

• What Is a Sodium-Ion Automotive Starting Battery?

  
  

  A sodium-ion automotive starting battery is a 12 V battery engineered to deliver the high current required to crank an internal combustion engine. It also stabilizes the vehicle’s electrical system and supplies power to essential electronics before the engine starts.

  Unlike a start-stop battery, which must support frequent engine shutdowns and restarts, an automotive starting battery is primarily designed to provide strong, immediate cranking power whenever the vehicle is started. Sodium-ion chemistry combines high-rate discharge capability with lightweight construction, rapid charge acceptance, and reliable performance under demanding temperatures.

  
  

• Can a Sodium-Ion Starting Battery Directly Replace a Lead-Acid Car Battery?

  
  

  Yes, a sodium-ion starting battery can be a lead-acid battery alternative when its voltage, case size, dimensions, terminal layout, cold-cranking amps, charging profile, and vehicle requirements are compatible. Battery selection should be based on the complete technical specifications rather than case size alone.

  As an alternative to a lead-acid car battery, an Aeson Power sodium-ion starting battery offers several advantages:

  Lower Weight: Up to 60% lighter than a comparable lead-acid battery, depending on the model and capacity.

  Strong Cranking Power: Low internal resistance supports high CCA and dependable engine starts.

  Longer Service Life: Aeson Power testing indicates a service life of more than three times that of conventional lead-acid batteries under comparable conditions.

  Rapid Charge Acceptance: Up to 5C fast-charging capability supports efficient energy recovery.

  High-Temperature Performance: Selected models are designed for operation at temperatures up to 80°C.

  Maintenance-Free Design: The sealed battery does not require electrolyte refilling or routine fluid maintenance.

  Note: Always confirm compatibility with the vehicle charging system and application requirements before replacing the original battery.

  
  

• How Do I Choose the Right Automotive Starting Batteries for My Market?

  For distributors, wholesalers, fleet operators, and automotive businesses, product selection should begin with the local vehicle population, common replacement sizes, climate, required CCA ratings, terminal configurations, charging-system compatibility, and customer expectations.

  Aeson Power offers 12 V sodium-ion starting batteries in L1–L2, NS40–NS60, and D23–D31 case sizes, with CCA ratings ranging from approximately 350 A to 800 A, depending on the model. This range helps customers cover a broad selection of passenger-vehicle applications.

  As a car starting battery manufacturer, Aeson Power provides product matching, technical documentation, volume-order support, and customized solutions for different markets.

  Need help selecting the right product range? Contact us for a tailored battery solution.

  
  

• How Does a Sodium-Ion Automotive Starting Battery Work?

  A sodium-ion starting battery stores and releases energy through the movement of sodium ions between its positive and negative electrodes.

  When the vehicle is started, sodium ions move through the electrolyte while electrons flow through the external circuit. This creates the high-current output required to power the starter motor and crank the engine. Once the engine is running, the alternator recharges the battery, reversing the movement of the ions and preparing the battery for the next start.

  The battery’s high-rate discharge capability provides dependable cranking power, while its protection system helps manage voltage, current, and temperature during operation and charging.

  
  

• How Long Does a Sodium-Ion Car Starting Battery Last?

  
  

  The service life of a sodium-ion car starting battery depends on operating temperature, driving conditions, charging-system performance, electrical demand, storage, and the selected battery model.

  Under comparable test conditions, Aeson Power sodium-ion starting batteries can provide more than three times the service life of conventional lead-acid batteries. Their long cycle life and rapid charge acceptance can also reduce the frequency, labor, and downtime associated with battery replacement.

  Actual service life varies by application and should not be presented as a guaranteed number of calendar years. Correct battery selection, compatible charging, and proper storage help maximize long-term performance.

  
  

• How Can I Identify a Faulty Automotive Starting Battery?

  Common signs of a faulty car starting battery include slow engine cranking, clicking sounds when starting, dim lights, dashboard battery warnings, unexpected voltage drops, or frequent jump-starts. Physical warning signs may include a swollen or damaged case, loose or corroded terminals, leakage, unusual heat, or an abnormal smell.

  Similar symptoms can also be caused by the alternator, starter motor, charging system, wiring, or electrical connections. Test the battery and vehicle charging system before selecting a replacement.

  
  

• Why Should I Change My Car Starting Battery?

  A car starting battery should be replaced when it can no longer provide reliable cranking power or maintain the voltage required by the vehicle’s electrical system. Continuing to use a deteriorating battery can result in slow starts, unexpected starting failure, and vehicle downtime.

  Battery performance may decline because of repeated cycling, extreme temperatures, improper charging, long periods of inactivity, or an incompatible charging system. Regular testing helps identify declining performance before the battery fails completely.

  
  

• What CCA Rating Should I Look for in an Automotive Starting Battery?

  
  

  The correct cold-cranking amps rating depends on the vehicle manufacturer’s requirements, engine size, climate, and electrical system. Select an automotive starting battery that meets or exceeds the minimum CCA specified for the vehicle while remaining compatible with its voltage and charging system.

  Higher CCA is not automatically better if the battery’s dimensions, terminal layout, charging profile, or other specifications do not match the application. Aeson Power offers 12 V sodium-ion starting batteries with CCA ratings ranging from approximately 350 A to 800 A, depending on the model.

  For B2B product selection, compare local vehicle applications and replacement demand before deciding which CCA ratings and case sizes to stock.

  
  

• Can Aeson Power Customize Starting Batteries for Specific Vehicle Applications?

  Yes. As a car starting battery manufacturer, Aeson Power can evaluate customized battery solutions for specific vehicle platforms, market requirements, and B2B applications.

  Customization may include voltage, energy capacity, CCA, case dimensions, terminal configuration, battery management and protection functions, branding, packaging, and technical documentation. Available options depend on technical feasibility, certification requirements, and order volume.

  Contact us to discuss your vehicle application and receive a tailored battery solution.

  
  

• Do Sodium-Ion Automotive Starting Batteries Require Maintenance?

  Aeson Power sodium-ion automotive starting batteries feature a sealed, maintenance-free design. They do not require electrolyte refilling or routine fluid top-ups, helping reduce day-to-day maintenance requirements.

  Always follow the applicable product and vehicle instructions for installation, charging, and use.

  
  

• What are the main functions of the Aeson Power 12V sodium-ion automotive start-stop battery?

  Start-stop batteries possess all the functions of a starting battery within the vehicle. Additionally, when the vehicle is stationary and the engine is not running, they supply energy to various electrical appliances on board; when the engine stops, they must ensure that the complete electronic system functions normally, including the power required for the next start.  

• Sodium battery charging time？

  The charging time is related to the charging voltage and the charging current. For example, with 0.2C current and 14.6V voltage, the full charge time is about 5.5h; while with 1C high current, it isabout 1.1h. Normally, the charge voltage reach the limit value and last for 6-10min means it fully charged.

• What is the discharge voltage (working voltage, i.e., closed circuit voltage in work) of sodium battery?

  The discharge voltage is related to the size of the load and the SoC state of the battery. Thesmaller the load, the higher the voltage; the higher the SoC, the higher the voltage.

  The closed-circuit voltage range of a new battery for start-stop use is between 9 and 12V, and thevoltage will gradually drop during usage.

  
  

• Do sodium batteries require maintenance?

  Sodium-ion starter batteries are a fully sealed & maintenance-free design, so these are similar to those of lead-acid AGM battery types. The original meaning of the English term MF(Maintenance Free) in the lead-acid battery terminology is that it does not require regular topping.

• How are sodium batteries recycled?

  Since sodium-ion starting batteries are a new technology and still in the stage of continuousimprovement, there is no comprehensive recycling standards and regulations yet, the relevantrecycling specifications are basically still referred to lithium-ion batteries, and it is recommended to consult the local professional organizations at present.

• Are sodium batteries considered dangerous goods in transportation?

  Yes, now basically refer to lithium-ion products regulation.

• How to operate the sodium battery after over-discharged?

  It is recommended to place it in 5~35℃ environment, and then recharge it according to therecommended method. In order to better protect the battery and avoid the damage caused byover-discharge, please recharge it if the battery voltage is less than 1ov.

• How do I maintenance a sodium-ion battery during long time storage?

  Short-term storage (1-3 months): generally no special maintenance is needed. Regularvoltage checks are recommended in higher temperatures (>35°C) to prevent excessiveself-discharge.

  Medium-term storage (3-6 months): Possible 5%~20% capacity loss; check voltage every 3months. Recharge if the voltage drops to 10V per 12V.

  Long-term storage (6 months or more): Possible 20%~40% capacity loss; recommendingCharge to 40%~60%soC to prevent irreversible damage for long time storage management..