General Information

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  • Can you send me spec sheets of the following batteries?

    All our spec sheets, in PDF form, can be downloaded from the Products section of our website.

  • Can you send me MSDS’s for each of the batteries we buy from you?
    We have the same MSDS (Material Safety Data Sheet) covering our complete range of PS, PSH, PSG and PG series batteries, they are not model specific. We also have MSDS’s for our Powersport, NiCd and NiMH batteries The MSDS\'s in PDF form can be downloaded from our website. Go to Literature and scroll down to Material Safety Data Sheets.
  • How are your batteries rated?
    Our PS, PSH and PSG-Series batteries are rated at their 20 hour rate. Our PG-Series long life batteries, in accordance with industry convention, are rated at their 10 hour rate.
  • How long will your batteries last?
    Detailed information about the many factors effecting battery life can be found in our Technical Manual on pages 10 and 11. To access our Technical Manual please go to the Literature - SLA Batteries section of this website.
  • How do we read the date code on your batteries?

    PS, PSH, PSG and PG Series Product Date Codes The first five numeric characters represent the month, day and year of manufacture (MM/DD/Y)

    • The first two numbers identify the month, from 1 to 12. For example, March is 03 and November is 11.
    • The second two numbers specify the day of the month, from 01 to 31.
    • The fifth digit identifies the year from 0 to 9. This digit is repeated every 10 years. For example, 1 = 2001, 4 = 2004 etc. For example: 09016 would be broken down to September 1st, 2006 There may be additional alpha-numeric characters at the end of the date code. These are internal lot numbers or injection mold numbers and they have no bearing on the date of manufacture. Powersport Batteries Product Date Codes The first four characters represent the year, month and production line(Y/MM/*)
    • The first letter identifies the year, from A to Z. For example, E = 2005, F = 2006, G = 2007.
    • The second two numbers specify the month, from 01 to 12.
    • The fourth digit/letter identifies the factory code. This code does not reflect the date of manufacture. For example:F10Y would be broken down to October, 2006

  • Do your batteries have National Stock Numbers (NSN)?
    Many of our batteries have NSN numbers. These can be accessed from the Literature section of our website. Scroll down to the bottom of the page Miscellaneous and click on National Stock Numbers.
  • How can I find out what is the internal resistance of my battery?

    Power-Sonic publishes the internal resistance of all of our sealed lead acid batteries on page one of the individual battery specification sheets. All our spec sheets, in PDF form, can be downloaded from the Products section of our website If you require any further information please contact our Technical department.

    Contact details are as follows: Tel: 619-661-2020 Fax: 619-661-3650 E-mail: technical-support@power-sonic.com

  • I am trying to send some of your batteries by air but the freight forwarder won’t take them because they say they are hazardous goods. What do I do?
    Our sealed lead acid batteries can be shipped safely by air. For more information please go to the LiteratureShipping Domestic and International section of our website:
  • What are the lowest and highest temperatures that your sealed lead acid batteries can operate in?
    Power-Sonic PS, PSH, PSG and PG batteries can be discharged at temperatures from -40°C to 60°C (-40°F to 140°F) and charged at temperatures from -20°C to 50°C (-4°F to 122°F).
  • Where can I recycle your batteries?
    Please go to the Literature section of our website and scroll down to Miscellaneous. The Battery Recycling link will take you to the information that you require.
  • Will I get the same battery life from all of your PS-Series batteries?
    The life of a battery will depend upon a number of factors including application, operating temperature and the charging method. More in-depth information can be found in our Technical Manual on pages 10 and 11. To access our Technical Manual please go to the Literature - SLA Batteries section of our website.
  • What are the differences between AGM sealed lead batteries and Gel sealed lead batteries?
    Both kinds of batteries are sealed, valve regulated types allowing them to be used in any position. The difference lies in the way the electrolyte is immobilized. In case of an absorbed electrolyte type (AGM), the electrolyte is absorbed by the glass fiber separator who acts like a sponge. In a gel-type battery the liquid electrolyte turns into a gel right after the battery is filled. Gel batteries use a different type of separators which are not absorbent. The internal design is otherwise similar.

  • Where can I find constant power or constant current discharge charts?

    This can be found in the Literature section of this website under Sealed Lead Acid Batteries

  • What is the difference between cycle use and standby use?

    When a battery is being used as a power source on a regular basis and it is being discharged and subsequently recharged, the battery is said to be in cyclic use. The determining factor in the life of this battery is the number of charge/discharge cycles that can be completed. In cyclical applications up to 1,000 charge/discharge cycles can be expected depending on the average depth of discharge.

    Standby batteries are meant to act as an emergency power source where the main power source has failed for some reason. Consequently standby batteries are kept fully charged so that they can “kick in” immediately. The batteries remain connected to a trickle charger that will keep the battery fully charged and ready for use. In standby use the batteries have a design life of up to five years. Please consult our Technical Manual and product specifications to become aware of the many factors that effect product life.

  • What is battery cycle life?
    The number of charge/discharge cycles that can be achieved before a battery reaches the end of its’ useful life. The number of cycles depends on the capacity taken from the battery (a function of discharge rate and depth of discharge), operating temperature and charging method. Further information can be found in our Technical Manual on page 10. To access our Technical Manual please go to the Literature - SLA Batteries section of our website
  • What is battery float life?
    The life expectancy of a battery under continuous charge. This depends on the frequency and depth of discharge, the float voltage and the ambient temperature. Further information can be found in our Technical Manual on page 11. To access our Technical Manual please go to the Literature - SLA Batteries section of our website
  • How safe are your batteries?

    Power-Sonic batteries are extremely safe providing sensible handling, installation and charging practices are followed. To access our Technical Manual please go to the Literature - SLA Batteries section of our website. Pages 20 and 21 provide a list of important do’s and don’ts.

    Copies of our Material Safety Data Sheets (MSDS) are available from the Literature section of this website. The MSDS contains important information relative to safe handling, materials used and precautions to be taken. You should read this important information prior to use.

  • What is the battery case made from?
    Our battery cases and lids are made from ABS plastic that complies with a specific UL rating. Depending on the application, some cases are manufactured from ABS that has a higher resistance to flame than the standard model. More information on these ratings can be accessed from the LiteratureMiscellaneous section of our website.
  • Does Power-Sonic sell lead-calcium batteries?
    All our sealed lead acid batteries utilize 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 excessive cycle service. The heavy duty lead calcium alloy grids provide an extra margin of performance and life in both cyclical and float applications and give unparalleled recovery from deep discharge.
  • What is the difference between SLA, VRLA and AGM batteries?
    SLA and VRLA are different acronyms for the same battery, Sealed Lead Acid or Valve Regulated Lead Acid. This battery type has the following characteristics: Maintenance-free, leak-proof, position insensitive. Batteries of this kind have a safety vent to release gas in case of excessive internal pressure build up. AGM, Absorbed Glass Mat refers to a specific type of SLA/VRLA where the electrolyte is absorbed into separators between the plates consisting of sponge like fine glass fiber mats.
  • How do I add acid to the battery?
    You should never seek to add acid to our sealed batteries. Our VRLA batteries are a closed system that works on a recombination principle. To produce a truly maintenance free battery it is necessary that the gasses generated during overcharge are recombined in a so called “oxygen cycle”. The theory is explained on page 4 of our Technical Manual. . To access our Technical Manual please go to the Literature - SLA Batteries section of our website. Opening the battery will cause irreparable damage and void the warranty.
  • Are your SLA batteries recombinant?
    Yes, detailed information can be found in our Technical Manual on page 4. Please go to the Literature - SLA BatteriesTechnical Manual section of our website.
  • What is the country of origin for your batteries?
    Most of our batteries come from China. Due to the need for special sizes etc., some of our batteries are sourced from Taiwan or Vietnam.
  • In which direction does current flow in a battery?
    The conventional direction is from positive terminal (anode) to negative terminal (cathode). This is the direction of the electric field within the wire.
  • Do your sealed lead acid batteries develop a “memory”?
    Due to the nature of the materials used, this type of battery does not develop any memory.
  • What is the chemistry of lead acid batteries?
    Detailed information can be found in our Technical Manual on pages 3 and 4. To access our Technical Manual please go to the Literature - SLA Batteries section of our website.
  • What is the price of lead?
    Our batteries are manufactured from lead purchased on the Shanghai Metals Exchange (SME). We do publish the daily price for SME lead on our website. This can be accessed by clicking on the Lead heading under the “What’s New” section on the home page of our website: