Precautions for sealed lead acid battery charger design?

Discussion in 'The Projects Forum' started by onlyvinod56, Jan 18, 2011.

  1. onlyvinod56

    Thread Starter Active Member

    Oct 14, 2008
    362
    1
    Hello,

    What are the precautions to be taken while making a battery charger (sealed lead acid)?

    thankyou
     
  2. JDT

    Well-Known Member

    Feb 12, 2009
    658
    85
    Normally, sealed lead-acid batteries are charged using a constant voltage. Then, the charging current will be self-regulating. With a constant voltage the battery cannot be overcharged. This voltage is approximately 2.3V per cell. So a 12V battery will need approximately 13.8V. The data sheet for the battery will have more details. This voltage is also temperature dependant. Your charger needs to have over-current limiting in case of a faulty battery or a very discharged one.

    Have a look athttp://batteryuniversity.com/learn/article/charging_the_lead_acid_battery
     
  3. soda

    Active Member

    Dec 7, 2008
    174
    13
    Hi,

    Here is everything about SLA batteries you wanted to know.
     
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