FG220-12 best vrla agm sealed lead acid battery 12v 220ah

VRLA Battery 12V 220AH | Dimension: 520x268x203x207mm

SKU: FG220-12 Category:

GRANKIA FG220-12 best vrla agm sealed lead acid battery 12v 220ah is the most commonly used type of storage battery. It is well-known for its various applications including UPS, automotive, medical devices and telecommunications.

The sealed lead acid battery 12v is made up of cells, each cell consists of plates immersed in an electrolyte of dilute sulfuric acid.

GRANKIA utilizes the latest technology and equipment to cast grids from a lead-calcium alloy free of antimony. The small amount of calcium and tin in the grid alloy imparts strength to the plate and guarantees durability even in extensive cycle service. Lead dioxide paste is added to the grid to form the electrically active material.

FG220-12 best vrla agm sealed lead acid battery 12v 220ah

FG220-12 best vrla agm sealed lead acid battery 12v 220ah

Sealed Lead Acid Battery 12V Features

1.) AGM technology

AGM stands for Absorbent Glass Mat. In these batteries the electrolyte is absorbed into a glass-fibre mat between the plates by capillary action.

2.) Low self-discharge

Storing batteries at lower temperatures thus reduces the rate of self-discharge and preserves the initial energy stored in the battery.

3.) VRLA technology

VRLA stands for Valve Regulated Lead Acid, which means that the batteries are sealed.

4.) Maintenance-Free Design

Minimises technician time spent at site and on battery related callouts.

5.) Anti Buckle Separators

Internal plate buckling can kill a battery outright or simply reduce its lifespan. Our AGM separators gives the plates extra support to eliminate buckling.

VRLA Battery Applications

  • Uninterrupted power supply(UPS)
  • Automotive and traction applications
  • Lighting equipment, fire alarms and security systems
  • Communication and telecom system
  • Solar energy system
  • High current drain applications
  • Fire alarms and security systems
  • Portable VTR/TV, tape recorders, radios, etc.
  • Various power toys and recreational equipment
  • Emergency power supplies in power generation plants and substations
  • Golf Cart

AGM Battery Details

sealed lead acid battery 12v copper terminalReliable and high performance lead acid battery

AGM lead acid battery in series or in parallel connection

Battery Storage Characteristics

Lead Acid Battery Discharge Characteristics Lead Acid Battery Charging Characteristics
Lead acid battery effect of temperature on capacity Lead acid battery self discharge characteristics
Lead acid battery relationship for open circuit voltage and residual capacity Lead acid battery the relationship for charging voltage and temperature
Lead acid battery floating life on temperature Lead acid battery cycle life on DOD

Sealed Lead Acid Battery FAQ

  1. Are Sealed lead acid batteries good?

    The valve regulated, spill-proof construction of sealed lead acid batteries allows trouble-free, safe operation in any position.

  2. Why do Sealed lead acid batteries fail?

    The primary lead-acid battery failure mechanisms are internal corrosion, sulfation and loss of electrolyte.

  3. How long can you store a sealed lead acid battery?

    A sealed lead-acid battery can be stored for up to 2 years. During that period, it is vital to check the voltage and charge it when the battery drops to 70%.


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    Nominal Voltage 12V(6 cells per unit)
    Design Floating Life @25℃ 10 Years
    Nominal Capacity @25℃(10 hour rate@22.00A,10.80V) 220Ah
    Capacity @25℃ 20 hour rate (11.77A,10.5V) 235.4Ah
     5 hour rate (38.7A,10.5V) 193.5Ah
    1 hour rate (140.4A,9.6V) 140.4Ah
    Internal Resistance Full Charged Battery@25℃ ≤3.0mΩ
    Ambient Temperature Discharge -20℃~50℃
    Charge -20℃~50℃
    Storage -20℃~50℃
    Max. Discharge Current@25℃ 2000A(5s)
    Capacity affected by Temperature

    (10 hr Capacity )

    40℃ 102%
    25℃ 100%
    0℃ 85%
    -15℃ 65%
    Self-Discharge@25℃ per Month 3%
    Charge (Constant Voltage) @25℃ Standby Use Initial Charging Current Less than 44A

    Voltage 13.6-13.8V

    Cycle Use Initial Charging Current Less than 44A

    Voltage 14.4-14.9V


    Discharge Constant Current per Cell (Amperes at 25°C)

    F.V/Time 15min 30min 45min 1h 2h 3h 5h 6h 8h 10h 20h
    1.60V 397.1 233.9 177.1 140.4 82.5 60.7 40.9 35.6 27.9 23.1 12.21
    1.67V 375.1 221.5 170.3 136.2 79.9 58.7 40.3 35.0 27.7 22.7 12.10
    1.70V 352.2 215.2 164.1 130.9 77.7 57.2 39.4 34.3 27.3 22.4 11.92
    1.75V 330.0 205.7 156.9 125.6 75.7 55.9 38.7 33.7 26.8 22.2 11.77
    1.80V 309.5 198.2 151.1 121.2 72.8 54.1 37.8 33.0 26.4 22.0 11.66

    Discharge Constant Powerper Cell (Watts at25°C)

    F.V/Time 15min 30min 45min 1h 2h 3h 5h 6h 8h 10h 20h
    1.60V 759.2 464.4 336.4 269.3 156.4 115.9 79.0 68.9 54.6 45.1 24.1
    1.67V 726.4 435.4 324.9 262.0 152.2 112.9 77.7 67.8 54.1 44.7 23.9
    1.70V 676.9 425.9 314.6 253.0 148.7 110.2 76.6 66.9 53.5 44.2 23.6
    1.75V 635.1 405.5 302.1 243.8 145.2 108.0 75.5 65.8 52.8 43.8 23.4
    1.80V 596.2 389.0 291.9 235.8 140.4 104.9 73.9 64.7 52.1 43.6 23.2