Specifications:  
    Nominal voltage: 6V
    Nominal capacity (20HR): 4Ah
    Maintenance: Free
    Dimension(LxWxHxTH): 70x48x100x106mm

    Weight/unit: 0.68kg    

Advantages:                                                                                                                   

 * Full range of lead acid battery, with capacity 0.8Ah to 3000Ah
    * Maintenance-Free
    * Completely safe and sealed design
    * Gas recombination
    * Maintenance free
    * High discharge ability
    * Low self-discharge rate
    * Wide temperature range
    * Powerful recover ability
    * Long life cycle    

Applications:
Marine systems, security systems, radio transceivers, medical equipment,   electric power systems, all kinds of test machines, computer backup power   supplies, emergency lighting/small lamp fitting, railway engines/railway   communications, uninterruptible power supply for banks, fire protections and   security,telecom system