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 visit the SLA Batteries section of our Datahub.

Where can I recycle your batteries?

Sealed Performance Batteries is dedicated to the protection of our environment and we would urge you to recycle your old batteries on every occasion.

We in the battery industry are proud of the fact that lead-acid batteries are the environmental success story of our time. More than 97% of all battery lead is recycled. Compared to 55% of aluminium soft drink and beer cans, 45% of newspapers, 26% of glass bottles and 26% of tyres, lead acid batteries top the list of the most highly recycled consumer products.

The lead-acid battery gains its environmental edge from its closed loop cycle. The typical new lead-acid battery contains 60 to 80 percent recycled lead and plastic The recycling cycle goes on indefinitely, that means the lead and plastic in the lead-acid batteries that you use have been – and will continue to be – recycled many, many times. This makes lead acid battery disposal extremely successful from both environmental and cost perspectives.

Almost all scrap metal merchants will accept used lead-acid batteries for recycling. A collection service is available at most landfills, transfer stations, service stations and automotive workshops.

Many councils have regular collections or drop-off locations for hazardous waste. Visit your council pages on RecyclingNearYou.com.au to find out about hazardous waste services in your area.

If you are still having difficulties we would be happy to direct you to a local recycling source in your area.

Where can I find a constant current discharge chart?

This can be found in our Technical Manual on page 7. To access our Technical Manual please visit the SLA Batteries section in our Datahub.

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.

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 the country of origin for your Power-Sonic 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.

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 can be found on the battery product pages.

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 visit the SLA Batteries section in our Datahub.

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 visit the SLA Batteries section in our Datahub.

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 degree celsius to 60 degree celsius (-40 degree Fahrenheit to 140 degree Fahrenheit) and charged at temperatures from -20 degree celsius to 50 degree celsius (-4 degree Fahrenheit to 122 degree Fahrenheit).

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 newer of the two technologies, 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. Advantages of AGM batteries when compared to gel type batteries; AGM batteries have a higher AH capacity in the same size case: PS-121000 is a 100AH battery whereas, for example, a gel type battery in the same size case would only be rated 84 AH; AGM batteries are generally about 20% less expensive than comparable gel batteries-AGM batteries have better high-rate discharge characteristics desirable in UPS – telecom applications • AGM batteries are much more readily available; 85 – 90% of all VRLA batteries sold are of the AGM type.

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.

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 visit the SLA Batteries section in our Datahub.

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 01 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.

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.

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 us directly.

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.

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.

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.

Do your batteries have National Stock Numbers (NSN)?

Most of our batteries have NSN numbers. These can be accessed from the product pages.

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.

Are your SLA batteries recombinant?

Yes, detailed information can be found in our Technical Manual on page 4. To access our Technical Manual please visit the SLA Batteries section in our Datahub.

What are some differences between Lithium and AGM batteries?

Different Lithium Technologies

Firstly, it is important to note that there are many types of “Lithium Ion” batteries. The point to note in this definition refers to a “family of batteries”.
There are several different “Lithium Ion” batteries within this family which utilize different materials for their cathode and anode. As a result, they exhibit very different characteristics and therefore are suitable for different applications.

Lithium Iron Phosphate (LiFePO4)

Lithium Iron Phosphate (LiFePO4) is a well-known lithium technology in Australia due to its wide use and suitability to a wide range of applications.
Characteristics of low price, high safety and good specific energy, make this a strong option for many applications.
LiFePO4 cell voltage of 3.2V/cell also makes it the lithium technology of choice for sealed lead acid replacement in a number of key applications.

Why LiFePO4?

Of all the lithium options available, there are several reasons why LiFePO4 has been selected as the ideal lithium technology for replacement of SLA. The main reasons come down to its favourable characteristics when looking at the main applications where SLA currently exist. These include:

  • Similar voltage to SLA (3.2V per cell x 4 = 12.8V) making them ideal for SLA replacement.
  • Safest form of the lithium technologies.
  • Environmentally friendly –phosphate is not hazardous and so is friendly both to the environment and not a health risk.
  • Wide temperature range.

Features and benefits of LiFePO4 when compared to SLA

Below are some key features LiFePO4 batteries which give some significant advantages of SLA in a range of applications. This is not a complete list by all means, however it does cover the key items. A 100AH AGM battery has been selected as the SLA, as this is one of the most commonly used sizes in deep cycle applications. This 100AH AGM has been compared to a 100AH LiFePO4 in order to compare a like for like as close as possible.

Feature – Weight:


  • LifePO4 is less than half the weight of SLA
  • AGM Deep cycle – 27.5Kg
  • LiFePO4 – 12.2Kg


  • Increases fuel efficiency
    • In caravan and boat applications, towing weight is reduced.
  • Increases speed
    • In boat applications water speed can be increased
  • Reduction in overall weight
  • Longer runtime

Weight has a large bearing on many applications, especially where towing or speed in involved, such and caravan and boating. Other applications including portable lighting and camera applications where the batteries need to be carried.

Feature – Greater Cycle Life:


  • Up to 6 time the cycle life
  • AGM Deep cycle – 300 cycles @ 100% DoD
  • LiFePO4 – 2000 cycles @ 100% DoD


  • Lower total cost of ownership (cost per kWh much lower over life of battery for LiFePO4)
  • Reduction in replacement costs – replace the AGM up to 6 times before the LiFePO4 needs replacing

The greater cycle life means that the extra upfront cost of a LiFePO4 battery is more than made up for over the life use of the battery. If being used daily, an AGM will need to be replaced approx. 6 times before the LiFePO4 needs replacing

Feature – Flat Discharge Curve:


  • At 0.2C (20A) discharge
  • AGM – drops below 12V after
  • 1.5 hrs of runtime
  • LiFePO4 – drops below 12V after approximately 4 hrs of runtime


  • More efficient use of battery capacity
  • Power = Volts x Amps
  • Once voltage starts to drop off, battery will need to supply higher amps to provide same amount of power.
  • Higher voltage is better for electronics
  • Longer runtime for equipment
  • Full use of capacity even at high discharge rate
  • AGM @ 1C discharge = 50% Capacity
  • LiFePO4 @ 1C discharge = 100% capacity

This feature is little known but is a strong advantage and it gives multiple benefits. With the flat discharge curve of LiFePO4, the terminal voltage holds above 12V for up to 85-90% capacity usage. Because of this, less amps are required in order to supply the same amount of power (P=VxA) and therefore the more efficient use of the capacity leads to longer runtime. The user will also not notice the slowing down of the device (golf cart for example) earlier.

Along with this the effect of Peukert’s law is much less significant with lithium than that of AGM. This results in having available a large percentage of the capacity of the battery no matter what the discharge rate. At 1C (or 100A discharge for 100AH battery) the LiFePO4 option will still give you 100AH vs only 50AH for AGM.

Feature – Increased Use Of Capacity:


  • AGM recommended DoD = 50%
  • LiFePO4 recommended DoD = 80%
  • AGM Deep cycle – 100AH x 50% = 50Ah usable
  • LiFePO4 – 100Ah x 80% = 80Ah
  • Difference = 30Ah or 60% more capacity usage


  • Increased runtime or smaller capacity battery for replacement

The increased use of the available capacity means the user can either obtain up to 60% more runtime from the same capacity option in LiFePO4, or alternatively opt for a smaller capacity LiFePO4 battery while still achieving the same runtime as the larger capacity AGM.

Feature – Greater Charge Efficiency:


  • AGM – Full charge takes approx. 8 hours
  • LiFePO4 – Full charge can be as low as 2 hrs


  • Battery charged and ready to be used again more quickly

Another strong benefit in many applications. Due to the lower internal resistance among other factors, LiFePO4 can accept charge at a much great rate than AGM. This allows them to be charged and ready to use much faster, leading to many benefits.

Feature – Low Self Discharge Rate:


  • AGM – Discharge to 80% SOC after 4 months
  • LiFePO4 – Discharge to 80% after 8 months


  • Can be left in storage for a longer period

This feature is a big one for the recreational vehicles which may only be used for a couple of months a year before going into storage for the rest of the year such as caravans, boats, motorcycles and Jet Skis etc. Along with this point, LiFePO4 doesn’t calcify and so even after being left for extended periods of time, the battery is less likely to be permanently damaged. A LiFePO4 battery is not harmed by not being left in storage in a fully charged state.

So, if your applications warrant any of the above features then you will be sure to get your monies worth for the extra spent on a LiFePO4 battery. Follow up article will follow in the coming weeks which will include the safety aspects on LiFePO4 and different Lithium chemistries.

At Sealed Performance Batteries, we are a battery company which has been around for 25 years and have in depth experience and knowledge of a wide range of battery technologies. We have been selling and supporting Lithium batteries for many years into many applications so if there are any requirements you have or need any questions asked, feel free to contact us.