Batteries  /  Power-Sonic  /  PG Series

When a standby battery has to last, the Power-Sonic PG Series is the range built for the job. With a thicker plate design and high-purity lead, the PG range is designed specifically for critical standby power applications that demand a longer design life and higher discharge performance. Where a general purpose battery might give four to five years, the PG range targets a 10 year design life expectancy in float mode, which reduces how often you have to return to site and replace cells.

As an Indigenous and Veteran-owned critical power and cooling specialist, Indigi Power and Cooling supplies the PG Series alongside our UPS maintenance and installation services. That means you can source the batteries and the engineers who commission them from a single Supply Nation and ICN Gateway registered supplier, backed by hubs in Brisbane, Sydney and Melbourne.

Why choose the PG Series

The PG Series shares the sealed, maintenance-free advantages of the wider Power-Sonic range, with design choices aimed squarely at long-life standby duty. The grid below sets out what matters most.

PG Series model range

The PG Series spans a wide capacity range in 6V and 12V blocks, with 2V long-life cells available for large stationary banks. The table lists the main 12V models and their rated capacity at the 20-hour rate. Ask us for the full list including front terminal and 2V options.

Applications

The long design life and high-rate discharge of the PG Series make it the natural choice wherever downtime is not an option:

• Uninterruptible power supplies in server rooms and data centres. See our UPS maintenance and UPS battery pages.
• Telecommunications and networking standby power.
• Emergency and exit lighting where a long service interval matters.
• Renewable energy and utility standby systems.
• Security and life-safety panels needing dependable float service.

PG Series vs general purpose PS Series

If you are deciding between the long-life PG range and the economical general purpose range, the table below summarises the trade-off.

Understanding design life versus service life

The 10 to 12 year figure quoted for the PG Series is a design life, not a guaranteed service life, and the difference matters when you plan replacements. Design life is measured under controlled float conditions at a reference temperature of around 20 to 25 degrees Celsius. Real installations rarely stay that cool, and heat is the single biggest driver of premature ageing in any lead acid battery. A common rule of thumb across the industry is that service life roughly halves for every 8 to 10 degrees Celsius of sustained temperature rise above the reference point. A PG battery rated for a 10 year design life may therefore deliver closer to five years in a hot, poorly ventilated cabinet, and the full design life only where the environment is genuinely climate controlled.

This is why the PG Series pairs so naturally with proper server room and comms room cooling. Keeping the battery room within a stable temperature band protects the investment you made in a long-life battery, and it protects the connected UPS and IT load at the same time. Indigi Power and Cooling can advise on both the battery and the cooling, so the two are specified together rather than in isolation. Where a site cannot be cooled, choosing a higher capacity than the bare minimum, or planning shorter replacement intervals, keeps the system reliable.

Sizing a PG battery string for your UPS

Sizing a battery string is about matching three things: the voltage the UPS expects across the string, the runtime you need at your load, and the physical space and terminal arrangement available. A typical single-phase UPS uses a string of 12V blocks in series to reach a nominal DC bus voltage, while larger three-phase systems use longer strings or multiple parallel strings. The amp-hour capacity you choose sets how long the load will run during a mains failure, so a higher capacity PG model buys more runtime at the cost of more weight and footprint.

Because the PG range spans 28Ah to 260Ah in 12V, it covers everything from a small comms cabinet to a substantial data centre string. If you are replacing an ageing string, the safest approach is to match the existing model or its direct PG equivalent, keeping the same voltage, capacity, terminal type and dimensions so the battery fits the tray and the UPS charger settings remain valid. If you are specifying a new system or want more runtime than before, our UPS runtime and battery sizing calculator gives a first estimate, and our engineers will confirm the final selection against your actual load profile and available space.

Nationwide supply and support

Indigi Power and Cooling supplies the PG Series across Australia from our national hubs, with UPS engineers who can size, install and commission complete strings.

Frequently asked questions

How long does the Power-Sonic PG Series last?

The PG Series is designed for a 10 to 12 year design life in standby float mode under normal operating conditions, achieved through a thick plate design, high-purity lead and efficient gas recombination. Actual service life depends on operating temperature and duty, with cooler, float-only service delivering the longest life.

What is the difference between the PG Series and the PS Series?

The PG Series is a long-life range with thick plates and a 10 to 12 year design life aimed at critical UPS and telecom standby, while the PS Series is an economical general purpose range with a four to five year design life for fire, security and light standby duty. Choose PG when you want fewer replacements over the life of the system.

Is the PG Series suitable for UPS systems?

Yes. The PG Series offers superb high-rate discharge characteristics that make it well suited to UPS and telecom applications, which draw heavy current for short periods during a mains failure. Match the voltage, capacity and number in series to your UPS requirement.

Is a flame retardant case available?

Yes. The standard PG case is a rugged impact-resistant ABS, and a flame retardant UL94:V-0 rated case is available on request for installations with stricter fire requirements.

How long can PG batteries be stored before use?

Thanks to lead-calcium alloy grids and high-purity lead, the PG range has superior shelf-life characteristics. As a guide, they may be stored for up to about six months at 25 degrees Celsius before a freshening charge is required, with shorter intervals at higher temperatures.

Which PG model do I need?

Match the voltage, amp-hour capacity, terminal type and physical dimensions of your existing battery, and the number in series your UPS or system requires. Send Indigi Power and Cooling your UPS model or the part number on your current battery and we will confirm the correct PG equivalent.

Related products and services

• Full Power-Sonic battery range
• Power-Sonic PDC Series deep cycle AGM
• Power-Sonic DCG Series deep cycle gel
• UPS maintenance and UPS maintenance plans
• UPS runtime and battery sizing calculator

Specify the right PG battery, first time Tell us your UPS or system model, or the part number on your current battery, and we will confirm the correct PG Series equivalent and pricing. Indigi Power and Cooling is an Indigenous and Veteran-owned, Supply Nation and ICN Gateway registered supplier. Contact Indigi Power and Cooling