Batteries

Fire alarm batteries and standby batteries for fire, intruder, emergency lighting and access control systems: sealed lead acid (SLA/VRLA) from 0.8Ah to 160Ah, flame retardant models, 24V panel packs, lithium cells and NiCd/NiMH emergency packs.

Batteries we stock

• 12V sealed lead acid (VRLA/AGM) batteries – the standby battery for most fire and intruder panels and PSUs, including the Yuasa NP7-12 12V 7Ah, NP12-12 12V 12Ah, NP17-12 12V 17Ah and NP38-12 12V 38Ah, plus 6V models.
• Flame retardant (FR / V0) batteries – e.g. the Yuasa NP7-12FR, Power Sonic PS-1270FR, Casil CA1270-V0 and Yucel Y17-12FR.
• 24V fire panel battery packs – matched pairs of 12V batteries with link wire, e.g. the C-TEC 24V 17Ah pack.
• Cyclic and high rate VRLA – Yuasa REC, SWL and FXH ranges, such as the REC36-12I 12V 36Ah.
• Lithium and alkaline cells – CR123A, CR2, 3.6V AA lithium, A23 12V and industrial alkaline packs from VARTA, Duracell and Panasonic.
• Emergency lighting and device batteries – high temperature NiCd and NiMH packs, ESP 3.6V NiCd packs, LiFePO4 cells, spare packs for emergency lighting fittings and the Texecom 7.2V NiMH bell battery.

Shop by brand: Yuasa, Power Sonic, Yucel and Casil.

How to choose a fire alarm battery

• Voltage: most 24V fire alarm panels and power supplies use two 12V batteries wired in series; intruder panels usually take a single 12V battery.
• Capacity (Ah): calculate it from the standby and alarm current and the required standby period, without exceeding the maximum battery the panel or PSU can house and charge.
• Flame retardant: choose an FR/V0 battery where the panel manufacturer or specification requires one.
• Replace in pairs: do not mix old and new batteries in a series pair.

Why buy from JEM Systems UK

JEM Systems UK supplies genuine Yuasa, Power Sonic, Yucel and Casil batteries, all brand new and factory sealed, to trade installers across the UK. You can order batteries together with fire alarm panels and intruder alarm panels. Buy online from JEM Systems UK with fast, tracked UK delivery.

Fire alarm battery FAQs

What battery does a fire alarm panel take?

Most conventional and addressable fire alarm panels use 12V sealed lead acid (VRLA) batteries, normally two in series for 24V. The capacity, often 7Ah, 12Ah or 17Ah, depends on the panel and its load, so check the panel label or manual.

What is the difference between SLA and VRLA batteries?

They are the same type of battery: sealed lead acid batteries are valve regulated (VRLA), and most use AGM (absorbent glass mat) construction, so they are maintenance-free and spill-proof.

Can I replace a 12V 7Ah battery with another brand?

Yes, if the voltage, capacity, case size and terminals match and the panel manufacturer has no specific requirement such as a flame retardant case.

How often should fire alarm batteries be replaced?

Test standby batteries at every service visit and replace them if they fail a test or reach the manufacturer's stated design life, which is typically 3–5 years for standard sealed lead acid standby batteries.