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AGM Deep Cycle Battery 12V38Ah

General Features

  • Designed floating charging service life: 12 years (25ºC)
  • Sealed and maintenance free operation
  • Safety valve installation for explosion proof
  • Low self-discharge characteristic
  • Wide operating temperature range from 0ºC~40ºC
  • Lead Aluminum calcium Tin alloy high energy, prevent corrosion

APPLICATION

  • DC power supply
  • UP S /E P S power supply
  • Electrical devices & instruments
  • Security and fire alarm systems
  • Telecom stations and power stations
  • Medical equipments
  • Emergency lighting systems

Physical Specifications

Nominal Voltage Nominal Capacity
(10HR )
Dimension Weight ±3% Internal Resistance
(In full charge status)
Standard
Terminals
L W H TH
12V 38AH 197±2mm 166±2mm 170±2mm 170±2mm Approx 11.5kg
(25.3lbs)
≈8.5mΩ F09
(standard)

Dimensions

Constant-Voltage Charge

Rated Capacity
20 hour rate (2.5A) 42.0AH
10 hour rate (5.0A) 38.0AH
5 hour rate (8.5A) 32.3AH
3 hour rate (12.5A) 29.0AH
1 hour rate (27.5A) 21.0AH
Capacity affected by Temperature
40ºC(104ºF ) 103%
25ºC(77ºF ) 100%
0ºC(32ºF ) 86%
Cycle Application
1. Limit initial current less than 9.5A.
2. Charge until battery voltage (under charge) reaches 14.1V to 14.4V at 25ºC(77ºF )
3. Hold at 14.1V to 14.4V until current drop to under0.23A for at least 3 hours
4. Temperature compensation coefficient of charging voltage is -30mV/ºC
Standby Service
1. Hold battery across constant voltage source of 13.6 to 13.8 volts with current
limit 9.5A continuously .When held at this voltage , the battery will seek its
own current level and maintain itself in a fully charge status.
2. Temperature compensation coefficient of charging voltage is -18mV/ºC.

NOTE : The battery should be charged within 6 months of storage, Otherwise, permanent loss of capacity might occur as a result of sulfation

Battery Discharge Table

 

End
Voltage (V)
Minute (M) Hour (H)
5 10 15 30 45 1 1.5 2 3 5 8 10 20
Constant Current Discharge Data Sheet (Amperes at 25ºC)
10.20 120 91.2 68.7 36.5 33.8 23.75 18.75 15.71 9.84 6.84 4.86 4.03 2.15
10.50 106 83.6 64.3 35.0 32.8 22.80 18.02 15.13 9.52 6.53 4.60 3.95 2.11
10.80 98.8 76.0 60.1 33.8 30.8 21.85 17.28 14.55 9.19 6.25 4.37 3.84 2.05
Constant Power Discharge Data Sheet (Watt at 25ºC)
10.20 1189 1007 731 455 342 297 217 163 122 78.4 58.1 49.0 25.88
10.50 1144 855 656 445 334 293 212 158 118 76.0 57.4 47.9 25.0
10.80 1064 798 627 435 323 279 204 152 114 73.3 56.6 45.6 24.51

Constant-Voltage Charge