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24V 40Ah Sodium-ion Truck Start-stop Battery (PN31- 40Ah)

  • Model: PN31- 40Ah
  • Wide temperature range from -40°C to 70°C
  • Over 80% capacity retention at -20°C
  • High 800A starting current for engine starts
  • Application：Large trucks , large vans , off-road vehicles , etc.
  • OEM solutions to satisfy specific power needs
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Description

 

Model PN31- 40A
Nominal capacity 40.0Ah
Nominal voltage 24.0V
Nominal energy 960Wh
Peak discharge current/  Starting Current 800A, 3Sec / 800CCA
Discharge cut-off voltage 16V
Standard charge voltage 31.6V
Allowed Max. charge voltage 31.6V
Standard charge current 8A
Recommended charge current ≤40A
Allowed Max. charge current 40A
Standard discharge current 8A
Recommended discharge current ≤100A
Maximum continuous discharge current 100A
Internal Resistance ≤9mΩ
Weight Approx. 10kg
Dimension L398*W175*H188mm
Ex-factory capacity Approx.60% SOC
Cycle life ≥5000 @ 25℃ 0.5C DOD100%
Protection Function Overvoltage , overcurrent , short circuit, high and low temperature protection and balance function
Discharge temperature -40℃~70℃
Charge temperature 0℃~70℃
Storage temperature ≤1Month:  0～+30℃、5～75%RH

≤6Month:  10～+25℃、5～75%RH

Recommend environment: 15～+25℃、5～75%RH
The Certification that ELB Got:
ELB Battery certification
ELB Battery certification

 

Check details in ELB certification center.

Core Product Features

  • Exceptional Cycle Life: ≥5000 cycles at 0.5C rate and 100% Depth of Discharge (DOD), ensuring long-term durability and value.

  • Expansive Operating Range: Functions reliably across an extreme temperature spectrum from -40°C to 70°C.

  • Superior Cold-Temperature Performance: Maintains over 80% capacity retention at -20°C for dependable power in freezing conditions.

  • High Cranking Power: Delivers 800A of starting current, guaranteeing reliable ignition for engines of

    large trucks , large vans , off-road vehicles , etc.

  • Enhanced Safety Profile: Inherent stability of sodium-ion chemistry reduces thermal risks for increased operational safety.

  • Rapid Charging Capability: Supports high-rate charging, significantly reducing downtime and improving operational efficiency.

Performance comparison of different types of battery
Comparison Item Lead acid battery LiFePO4 battery Sodium-ion battery
Working Voltage 10.5V~16V 10V~14.6V 8V~14.4V
Energy density 30-50Wh/Kg 120-200Wh/Kg 100-120Wh/Kg
Cycle life 150~300cycles >2500cycles 1500-2500cycles
Charging performance 6-8h Low-Temp Charging: Sustained 1C-2C Sustained 10C (80% charge in 15 min)
Discharging performance Poor Normal temperature/High temperature: Good

Low temperature: Poor

 Temperature range: Excellent (maximum support 25C discharging)
Safety performance  Good Excellent  Good
High-temperature performance Excellent  Good Excellent
Low-temperature performance Excellent Average

 

 Best
Environmental friendliness Average

 

 Average

 

 Best
Cost 0.3-0.5 RMB/ Wh 0.5-0.8RMB/ Wh 0.5-0.7 RMB/Wh(with a long-term reduction to 0.3 RMB/Wh)
Main advantages 1.Low cost

2.No memory effect

3.Good safety and stability

4.Can be fully recycled

 1.High energy density

2.Long cycle life

3.Capable of high-rate charging

4.High safety

 1.Cost-effective

2.High safety

3.Strong high-rate discharge capability

4.Excellent thermal stability

5.Superior low-temperature discharge performance

6.High tolerance to over-discharge
Main disadvantages 1.Low energy density and heavy weight

2.Relatively short cycle life

3.Certain level of emission pollution

4.Poor low-temperature performance

 1.High cost

2.Poor safety performance

3.Poor low-temperature performance

4.Low economic value for recycling

 1.The cycle life and energy density are slightly lower than those of LiFePO4 battery.

2.The recycling economic value is low.
Starting battery: Mainly used in automotive, motorcycle, fuel engine starting, marine starting, construction machinery and other starting fields.

Backup battery: Mainly used for communication backup power supply, uninterruptible power supply (UPS), emergency lighting power supply and other backup power supply batteries that require high-rate discharge.

Summary: 1. Sodium-ion batteries have the advantages of both lithium batteries and lead-acid batteries, and they have abundant resources, a wider temperature range, stronger charging and discharging rate, greater safety, and are more environmentally friendly.

2. With large-scale application, the low-cost advantage of sodium-ion batteries will become increasingly obvious. They will replace lead-acid batteries and become the mainstream battery product.

FAQs

Q1: Can I order samples before bulk purchase?
A: Yes. We provide 10pcs samples for quality verification.

Q2: What is the production timeline?
A:Samples: 7-10 days

    Mass production: 20-30 days (scales with order volume)

Q3: How is shipping handled?

Method Delivery Time Best For
DHL/UPS/FedEx 10-15 days Samples/Urgent Orders
Sea Freight 20-40 days Bulk Shipments

Q4: What’s the ordering process?

  1. Share requirements → 2. Receive quote → 3. Confirm sample → 4. Pay deposit → 5. Production → 6.Pay remaining balance→ 7.Delivery

Q5: Can I add custom branding?
A: Yes. Submit logo/design before production for approval.

Q6: What is the lifespan?
A: ≥5000 cycles @ 25℃ 0.5C DOD100%

Download

Datasheet

https://www.ecolithiumbattery.com/wpcontent/uploads/2025/10/PN31-24V40Ah-Datasheet.pdf

User Manual

https://www.ecolithiumbattery.com/wp-content/uploads/2025/10/PN31-40Ah-User-Manual.pdf

 

 

 

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