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12V 40Ah Lead Acid Battery

Brand : Yangtze Battery
Product origin : China
Delivery time : Within 10 days
Supply capacity : 30000 units/month
MOQ :

As a big battery manufacturers in China, we supply many different kinds of batteries , such as the lead acid AGM battery , Gel battery , Deep cycle battery , OPzV Tubular battery , OPzS Tubular battery ..etc .

The following is our 12V 40Ah Lead Acid Battery features :

1. Using oxygen recombination technology: maintenance-free

2. Silver-coated copper terminals (T1, T2 terminal), brass insert terminals and lead terminals improve the electric conductivity

3. High quality AGM separator: extend cycle life and prevent micro short circuit

4. ABS material: increase the strength of battery container. (Flame-retardant ABS is optional);

5. High purity raw material: ensure low self discharge rate

6. PbCaSn alloy for plate grids: less gassing, less self-discharging

7. Advanced lead tin calcium alloy, reduces grid corrosion & promotes long battery life

8. Oversized partition intercell welds, providing low resistance connections & minimal power loss 


1. Functional Parameter 5. Environment Temperature
Nominal Voltage 12V Discharge Temperature -15~50
Nominal Capacity (10 hour rate) 40Ah Charge Temperature 0~40
Number of Cells 6cells Storage Temperature -15~40
2. Rated Capacity at 25 (77° F) 6. Inner Resistance & Max . Discharge Current
10 hour rate (0.1C, 10.8V) 40Ah Fully Charged battery at 25 (77° F) 9.5mΩ
3 hour rate (0.25C, 10.8V) 30.6Ah Max. Discharge Current 600A (5s)
1 hour rate (0.55C, 10.5V) 22.1Ah Short Circuit Current 2000A
3. Capacity affected by Temperature (10 hour rate) 7. Self-discharge at 25 (77° F)
40 (104° F) 103% Capacity after 3 month storage 91%
25 (77° F) 100% Capacity after 6 month storage 82%
0 (32° F) 85% Capacity after 9 month storage 73%
-15 (5° F) 65% Capacity after 12 month storage 64%
4. Dimension and Weight 8. Constant voltage charging at 25 (77° F)
Length 197mm Cyclic use 14.4~14.9V
Width 165mm Maximum charging current 10A
Height 170mm Temperature compensation -30mV/
Total Height 170mm Float use 13.6~13.8V
Reference Weight 12.2kg Temperature compensation -20mV/


12V 40Ah Lead Acid Battery Typical Applications :

1.Uninterruptable Power Supply (UPS)

2.Electric Power System (EPS)

3.Emergency light

4.Emergency backup power supply

5.DC power supply

6.Aircraft signal

7.Electronic apparatus and equipment

8.Alarm and security system

9.Auto control system

10.Communication power supply

11.High Power Backup Supply

12. Medical equipments


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