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Cart Solar System Deep Cycle Lithium Ion Battery 12V40Ah Prismatic Cell SLA Case

China Shenzhen Topband Battery Co., Ltd certification
China Shenzhen Topband Battery Co., Ltd certification
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Cart Solar System Deep Cycle Lithium Ion Battery 12V40Ah Prismatic Cell SLA Case

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Large Image :  Cart Solar System Deep Cycle Lithium Ion Battery 12V40Ah Prismatic Cell SLA Case

Product Details:

Place of Origin: China Mainland
Brand Name: Topband
Certification: MSDS, ISO9001, ISO14001
Model Number: TB1240F-S110A

Payment & Shipping Terms:

Minimum Order Quantity: 20
Price: Negotiable
Packaging Details: standard export carton
Delivery Time: 2~4 weeks for samples; 4~6 weeks for mass production
Payment Terms: T/T, L/C
Supply Ability: 1Gwh/year
Detailed Product Description
Rated Voltage: 12.8V Rated Capacity: 40Ah
Limited Charge Voltage: 14.6±0.2V Max Charge Current: 40A
Max Discharge Current: 50A Internal Resistance: ≤40mΩ
Dimension: 196*165*175mm Operating Temperature: -20~60℃
Weight: 6.5±0.5kg End Of Discharge Voltage: 8V
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Deep Cycle Lithium Battery 12V40Ah prismatic Cell SLA Case for Cart Solar System


1. About us


Shenzhen Topband Battery Co., Ltd, a company professional to do LiFePO4 battery, which is founded in 1996 and listed in Shenzhen in 2007. There are over 300 R&D engineers and about 3,000 employees in the 70,000 square meters Topband industrial park. We can provide One -Stop Solution of new energy, from cell, BMS/PCM to battery pack assembling.


2.Detailed specification


NO. Items Criteria Remarks
2.1 Rated Capacity 40Ah  
Minimum Capacity 38Ah  
2.2 Energy 0.512KWh  
2.3 Nominal Voltage 12.8V  
2.4 Outgoing Voltage ≥12.8V  
2.5 Internal resistance ≤40mΩ  
2.6 Limited charge voltage 14.6±0.1V  
2.7 Floating charge voltage 13.8±0.2V  
2.8 Standard charge current 20A  
2.9 Maximum charge current 40A  
2.10 Standard discharge current 20A  
2.11 Maximum discharge current 50A  
2.12 Peak discharge current 170A/Continuous for 3 s  
2.13 Discharge cut-off voltage 8.0V(2.0V For each cell)  



Dimension Length: 196±2mm  
Width: 165.5±2mm  
Height: 175±2mm  
2.15 Weight 6.5±0.5kg  



Operating Temperature Charging:0~45℃
Discharging: -20~60℃
Recommended operating temperature: 15℃~35℃
2.17 Self-discharge rate Residual capacity: ≤3%/month; ≤15%/years
Reversible capacity: ≤1.5%/month; ≤8%/years
2.18 Storage Temperature & Humidity Range Less than 1 month: -20℃~35℃, 45%RH~75%RH
Less than 3 months: -10℃~35℃, 45%RH~75%RH

Recommended storage environment:

15℃~35℃, 45%RH~75%RH


3. Test conditions


Testing Conditions: Ambient Temperature: 25±5℃; Huminity:45%~75%.

Normal charge:Charge battery under CC(0.33C)/CV(43.8V) mode until over charge protection or the charge current reduce to 0.05C, and then rest for 1h.


4. Product Performance


NO. Items Criteria Testing method
4.1 Rated Capacity 40Ah Rest for 1 hour after fully charged, then discharge with 0.33C current until the battery reaches the discharge cutoff voltage. Repeat above process for three times, if the discharge time is not less than 120 minutes, you can stop and define the Discharging current*time value (Ah) as battery capacity.
4.2 Minimum Capacity 38Ah
4.3 Internal resistance ≤40mΩ 50% battery SOC state frequency of 1 KHZ ac resistance tester

Cycle life


≥2000cycle Discharge with the current of 0.33C until it can’t discharge, and then rest it for 1h. Charge the battery following CC(0.33C)/CV(14.6V) mode to full capacity, and then rest it for 1h. Repeat above process until full charged capacity is no more than 80% of normal value. Accumulated times is defined as cycle life.

Discharge Temperature


-20℃ ≥70% At 25±5℃ discharge the battery with the current of 0.33C to the cut-off voltage and record charge capacity. Store the battery at various temperatures for 2h and discharge the battery with 0.33C to the cut-off voltage.
-0℃ ≥80%
25℃ ≥100%
55℃ ≥95%
4.7 Charge Retention ability



Charge the battery to full capacity and store it for 28days, and then discharge it with 0.33C to the cut-off voltage.


5.Dimension drawing


Cart Solar System Deep Cycle Lithium Ion Battery 12V40Ah Prismatic Cell SLA Case 0



6. Transportation


1. Based on the character of cell, proper environment for transportation of LiFePO4 battery pack need to be created to protect the battery.

2. Battery should be stayed in the warehouse 15℃~35℃ where it’s dry, clean, shade, and well-ventilated.

3. The battery should be stored in 50% SOC during transportation.

4. The battery need to be charged every 6 months if out of use

5. Keep the battery against dropping, turning over and serious stacking during loading.


7. Warning&Tips


Please read and follow the specification and caution remarks on battery surface before use the battery. Improper use may cause heat, fire, rupture, damage or capacity deterioration of the battery. SHENZHEN TOPBAND NEW ENERGY CO.,LTD. Describes is not responsible for any accidents caused by the usage without following our specification.

1. The battery must be far away from heat source, high voltage, and avoid to be exposed in sunshine for long time.

2. Never throw the battery into water.

3. Do not put the battery in a charger or equipment with wrong terminals connected.

4. Never connect the positive and negative of battery with metal.

5. Avoid excessive physical shock or vibration. don't hit, fall, stamp on the battery

6. Without the permission of the manufacturer and guidance, forbidden to remove or to assemble the battery

7. Do not use the battery mixed with other different manufacturer, type, or model batteries.

8. Keep the battery against high temperature. Otherwise it will cause battery heat, get into fire or lose some function and reduce the life.

9. When battery run out of power, please charge your battery timely (≤15day).

10. Please use the matched or suggested charger for this battery.

11. If battery emit peculiar smell, heating, distortion or appear any abnormity during working or storage, please stop using and take it out from device.

12. If the battery leaks and get into the eyes or skin, do not wipe, instead, rinse it with clean water and see doctor immediately.

13. Please far away from children or pets.

14. Do not put disuse battery into a fire or water.

15. The battery pack supports up to 4 series-connected applications.

16. Parallel connection of this battery pack is allowed under condition that voltage difference ≤0.2V,parallel numbers ≤4 groups, and operated by professionals.


Contact Details
Shenzhen Topband Battery Co., Ltd

Contact Person: Jerry Yang

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