Power Sonic

Power Sonic sealed lead acid batteries for fire alarm panels, intruder alarms, emergency lighting and power supplies. The range runs from 1.2Ah to 65Ah at 12V, plus a 6V 10Ah block, with many flame-retardant (FR) versions.

Power Sonic batteries we stock

• Small 12V batteries (1.2Ah to 3.4Ah): for alarm panels, bell boxes and small power supplies, including the PS-1221FR and PS-1230FR.
• 7Ah to 18Ah: the most common sizes for fire and intruder panels, such as the PS-1270 F1, PS-1270FR, PS-1290FR, PS-12120FR and PS-12180FR.
• 21Ah to 65Ah: larger standby batteries for multi-loop panels and high-current power supplies, including PG-12V21FR, PS-12260FR, PS-12380, PS-12400FR, PS-12450FR and PS-12650.
• Flame-retardant part codes: 4015-series YFR batteries listed by part number for panels that specify them.
• 6V: the PS-6100 6V 10Ah battery.

Compare other brands in our full batteries range, including Yuasa, or find matching power supplies.

How to choose the right battery

• Capacity: work out the standby and alarm load for the system and size the battery from the panel manufacturer's battery calculation. Do not guess from the old battery alone.
• Voltage: most 24V fire panels use two 12V batteries of the same capacity connected in series.
• Terminals: F1 (4.8 mm) and F2 (6.3 mm) spade terminals are common on smaller blocks, while larger batteries such as the PS-12180FR use M5 bolt terminals.
• Flame-retardant cases: choose FR versions where the panel or specification asks for them.
• Replace in pairs: replace both batteries of a series pair together so they charge and discharge evenly.

Why buy from JEM Systems UK

JEM Systems UK supplies genuine Power Sonic products, all brand new and factory sealed. We supply fire and security installers across the UK, with fast, tracked UK delivery.

Power Sonic battery FAQs

What does FR mean on a Power Sonic battery?

FR stands for flame retardant. The battery case is made from a flame-retardant material, which some fire panels and specifications require.

Is Powersonic the same as Power Sonic?

Yes. Powersonic and Power-Sonic are common spellings of the same battery brand.

Can I use a higher capacity battery than the one fitted?

Often yes, if it fits the enclosure and the panel charger is rated for it. Check the panel manual for the largest battery it can charge.

How often should fire alarm batteries be replaced?

Batteries should be checked at every service. Replace them when they fail a load test or when the panel manufacturer or maintenance company recommends it.