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12V 3.4Ah Rechargeable SLA Battery - Maintenance-Free Sealed Lead Acid

£1499
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Description

The UL3.4-12 is a 12V 3.4Ah sealed lead acid (SLA) rechargeable battery using valve-regulated lead acid (VRLA) technology. The maintenance-free design requires no topping up of electrolyte and is sealed to prevent leakage during normal operation, making it suitable for indoor installation in alarm panels, emergency lighting units, uninterruptible power supplies (UPS), and small backup power applications.

Designed for standby and cyclic use in security systems, fire alarms, emergency exit lighting, CCTV systems, and gate/door access control installations, the battery provides 3.4Ah capacity at a 20-hour discharge rate. The spade terminals accept standard 6.3mm push-on connectors for quick installation without soldering or crimping. The compact 134mm x 67mm x 61mm footprint fits most alarm panel battery compartments and small equipment enclosures.

The battery case is constructed from ABS plastic with a blue top cover and grey lower case. The VRLA design uses an internal pressure-relief valve to manage gas build-up during charging, preventing case distortion while maintaining the sealed construction. The battery weighs 1.35kg and can be mounted in any orientation except inverted. Operating temperature range is -15°C to +50°C, with optimal performance and lifespan achieved when kept between 15°C and 25°C.

The battery is supplied ready to use with no initial charging required, though charge state may vary depending on storage duration. Expected service life is 3-5 years under typical standby conditions with regular float charging. The battery carries CE certification and meets international safety standards for sealed lead acid batteries.

Specification
Product Net Weight (KG) 0
Product Gross Weight (KG) 1.35
Outer Length (mm) 230
Outer Width (mm) 280
Outer Height (mm) 180
Downloads

Product Specification Sheet

Frequently Asked

What is the battery used for?

The 12V 3.4Ah SLA battery is designed for standby and backup power applications including burglar alarm panels, fire alarm systems, emergency lighting, CCTV camera systems, UPS units, and access control equipment. It provides power during mains failure to keep critical systems running.

Does it need maintenance or topping up?

No. This is a sealed valve-regulated lead acid (VRLA) battery that requires no maintenance, no electrolyte top-up, and is designed to be fitted and left in service. The sealed construction prevents leakage during normal use.

How long does the battery last?

Expected service life is 3-5 years under typical standby conditions with regular float charging (trickle charge from a mains power supply). Actual lifespan depends on operating temperature, charge/discharge cycles, and charging regime. Higher temperatures and frequent deep discharges reduce lifespan.

Can it be mounted in any position?

Yes, except fully inverted (upside down). The VRLA design allows the battery to be mounted upright, on its side, or at an angle without risk of electrolyte leakage. Most alarm panels and equipment mount the battery upright or on its long edge.

Shipping & Returns

Free worldwide delivery

Free worldwide delivery on all orders over £99. International orders for third-party brand products may be subject to an additional courier surcharge based on volumetric weight, particularly on larger lighting fixtures — if a surcharge applies, our team will email you with the amount before dispatch and you can proceed or cancel for a full refund. See full delivery terms.

Returns

30-day returns window from delivery. As all our products are electrical or lighting goods, returned items must be inspected and recertified by a qualified electrician before resale — the cost of this inspection (25–40% of the item value) is deducted from your refund. Customers pay return shipping. Made-to-order, special-order and clearance items cannot be returned. See full returns policy.

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    Description

    The UL3.4-12 is a 12V 3.4Ah sealed lead acid (SLA) rechargeable battery using valve-regulated lead acid (VRLA) technology. The maintenance-free design requires no topping up of electrolyte and is sealed to prevent leakage during normal operation, making it suitable for indoor installation in alarm panels, emergency lighting units, uninterruptible power supplies (UPS), and small backup power applications.

    Designed for standby and cyclic use in security systems, fire alarms, emergency exit lighting, CCTV systems, and gate/door access control installations, the battery provides 3.4Ah capacity at a 20-hour discharge rate. The spade terminals accept standard 6.3mm push-on connectors for quick installation without soldering or crimping. The compact 134mm x 67mm x 61mm footprint fits most alarm panel battery compartments and small equipment enclosures.

    The battery case is constructed from ABS plastic with a blue top cover and grey lower case. The VRLA design uses an internal pressure-relief valve to manage gas build-up during charging, preventing case distortion while maintaining the sealed construction. The battery weighs 1.35kg and can be mounted in any orientation except inverted. Operating temperature range is -15°C to +50°C, with optimal performance and lifespan achieved when kept between 15°C and 25°C.

    The battery is supplied ready to use with no initial charging required, though charge state may vary depending on storage duration. Expected service life is 3-5 years under typical standby conditions with regular float charging. The battery carries CE certification and meets international safety standards for sealed lead acid batteries.

    Specification
    Product Net Weight (KG) 0
    Product Gross Weight (KG) 1.35
    Outer Length (mm) 230
    Outer Width (mm) 280
    Outer Height (mm) 180
    Downloads

    Product Specification Sheet

    Frequently Asked

    What is the battery used for?

    The 12V 3.4Ah SLA battery is designed for standby and backup power applications including burglar alarm panels, fire alarm systems, emergency lighting, CCTV camera systems, UPS units, and access control equipment. It provides power during mains failure to keep critical systems running.

    Does it need maintenance or topping up?

    No. This is a sealed valve-regulated lead acid (VRLA) battery that requires no maintenance, no electrolyte top-up, and is designed to be fitted and left in service. The sealed construction prevents leakage during normal use.

    How long does the battery last?

    Expected service life is 3-5 years under typical standby conditions with regular float charging (trickle charge from a mains power supply). Actual lifespan depends on operating temperature, charge/discharge cycles, and charging regime. Higher temperatures and frequent deep discharges reduce lifespan.

    Can it be mounted in any position?

    Yes, except fully inverted (upside down). The VRLA design allows the battery to be mounted upright, on its side, or at an angle without risk of electrolyte leakage. Most alarm panels and equipment mount the battery upright or on its long edge.

    Shipping & Returns

    Free worldwide delivery

    Free worldwide delivery on all orders over £99. International orders for third-party brand products may be subject to an additional courier surcharge based on volumetric weight, particularly on larger lighting fixtures — if a surcharge applies, our team will email you with the amount before dispatch and you can proceed or cancel for a full refund. See full delivery terms.

    Returns

    30-day returns window from delivery. As all our products are electrical or lighting goods, returned items must be inspected and recertified by a qualified electrician before resale — the cost of this inspection (25–40% of the item value) is deducted from your refund. Customers pay return shipping. Made-to-order, special-order and clearance items cannot be returned. See full returns policy.