Yucel Y24-12I 12V 24Ah VRLA Battery, M5 Insert Terminals

£ 60 84
(Incl. VAT) RRP: £73.01
Save £12.17

About this product

The Yucel Y24-12I is a 12 V, 24 Ah (nominal) VRLA battery, where VRLA means valve regulated lead acid, from the Yucel range of maintenance-free lead acid batteries. Its rated capacity is 23.51 Ah at the 20-hour rate (C20). It measures 166.5 x 175 x 125 mm, weighs 7.2 kg typical and has M5 insert terminals.

Key features

  • 12 V block, 24 Ah nominal – rated 23.51 Ah at C20 (20 h) and 22.23 Ah at C10 (10 h)
  • Fits most ways round – any position except permanently inverted
  • Holds its charge in storage – capacity loss about 3% a month at 20°C
  • No topping up – a valve regulated lead acid (VRLA) design
  • Rated for commercial service – EUROBAT Standard Commercial, 3 to 5 years
  • Bolted connection – M5 female threaded insert terminals, 2.0 to 3.0 Nm

For installers

  • Power: 12 V nominal. Float charge 13.65 V (±1%) at 20°C with no current limit; cyclic or boost charge 14.5 V (±3%) at 20°C, limited to 5.8775 A.
  • Mounting: 166.5 x 175 x 125 mm (L x W x H), 125 (±2) mm over the terminals. Any position except permanently inverted.
  • Cabling: M5 female threaded insert terminals, tightened to 2.0 to 3.0 Nm. Use ring terminals sized for M5 bolts.
  • Compatibility: check the charger and the equipment's own battery and charging figures against these.
  • Standards: IEC61056. Standard case ABS (UL94:HB); certifications include ISO 9001, ISO 14001 and UL.

Frequently asked questions

Is it a 24 Ah battery?

Yes, 24 Ah nominal. Its rated capacity is 23.51 Ah at the 20-hour rate (C20) and 22.23 Ah at the 10-hour rate (C10), each to 1.75 V per cell at 20°C.

What size is the Y24-12I?

166.5 mm long, 175 mm wide and 125 mm high, or 125 mm over the terminals, each ±1 mm (±2 mm over the terminals). It weighs 7.2 kg typical.

What charge voltage does it need?

13.65 V (±1%) on float and 14.5 V (±3%) for cyclic or boost charging, both at 20°C.

How long does it last?

Yuasa design life is 5 years at 20°C, and the EUROBAT classification is Standard Commercial, 3 to 5 years.

Is the standard case flame retardant?

No. The standard case is ABS rated UL94:HB; the flame retardant (FR) option has an ABS case rated UL94:V0.

Can it go in a sealed box?

No. VRLA batteries release hydrogen, which mixed with air can become explosive, so do not install it in a sealed enclosure.

£ 60 84
RRP: £73.01 Save £12.17
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Technical Details
Specifications
Brand
Yucel
Model
Y24-12I
Manufacturer Part Number (MPN)
Y24-12I
Also listed as
Y24-12
Series
Yucel VRLA
Nominal voltage
12 V
Nominal capacity
24 Ah (nominal)
Rated capacity, C20 (20 h rate, to 1.75 V per cell, 20°C)
23.51 Ah
Rated capacity, C10 (10 h rate, to 1.75 V per cell, 20°C)
22.23 Ah
Length
166.5 (±1) mm
Width
175 (±1) mm
Height
125 (±1) mm
Height over terminals
125 (±2) mm
Mass (typical)
7.2 kg
Terminal
M5 female threaded insert
Terminal torque
2.0 to 3.0 Nm
Operating temperature, storage
-20°C to +60°C
Operating temperature, charge
-15°C to +50°C
Operating temperature, discharge
-20°C to +60°C
Capacity loss per month at 20°C
3% approx
Case material
ABS (UL94:HB)
Float charge voltage at 20°C
13.65 V (±1%); 2.275 V per cell (±1%)
Float charge temperature correction
-3 mV per cell per °C
Cyclic (boost) charge voltage at 20°C
14.5 V (±3%); 2.42 V per cell (±3%)
Cyclic charge temperature correction
-4 mV per cell per °C
Float charge current limit
No limit
Cyclic charge current limit
5.8775 A
Maximum discharge current
150 A for 1 minute
Impedance at 1 kHz
14 mΩ
EUROBAT classification
Standard Commercial, 3 to 5 years
Design life at 20°C
5 years
Standard
IEC61056
Installation
Any position except permanently inverted
Dimensions
Dimensions
166.5 (±1) mm long x 175 (±1) mm wide x 125 (±1) mm high, 125 (±2) mm over terminals

Specifications

Brand Yucel
Model Y24-12I
Manufacturer Part Number (MPN) Y24-12I
Also listed as Y24-12
Series Yucel VRLA
Nominal voltage 12 V
Nominal capacity 24 Ah (nominal)
Rated capacity, C20 (20 h rate, to 1.75 V per cell, 20°C) 23.51 Ah
Rated capacity, C10 (10 h rate, to 1.75 V per cell, 20°C) 22.23 Ah
Length 166.5 (±1) mm
Width 175 (±1) mm
Height 125 (±1) mm
Height over terminals 125 (±2) mm
Mass (typical) 7.2 kg
Terminal M5 female threaded insert
Terminal torque 2.0 to 3.0 Nm
Operating temperature, storage -20°C to +60°C
Operating temperature, charge -15°C to +50°C
Operating temperature, discharge -20°C to +60°C
Capacity loss per month at 20°C 3% approx
Case material ABS (UL94:HB)
Float charge voltage at 20°C 13.65 V (±1%); 2.275 V per cell (±1%)
Float charge temperature correction -3 mV per cell per °C
Cyclic (boost) charge voltage at 20°C 14.5 V (±3%); 2.42 V per cell (±3%)
Cyclic charge temperature correction -4 mV per cell per °C
Float charge current limit No limit
Cyclic charge current limit 5.8775 A
Maximum discharge current 150 A for 1 minute
Impedance at 1 kHz 14 mΩ
EUROBAT classification Standard Commercial, 3 to 5 years
Design life at 20°C 5 years
Standard IEC61056
Installation Any position except permanently inverted

Dimensions

Dimensions 166.5 (±1) mm long x 175 (±1) mm wide x 125 (±1) mm high, 125 (±2) mm over terminals

Yucel Y24-12I 12V 23.51Ah VRLA battery, front view

Yucel Y24-12I 12V 24Ah VRLA Battery, M5 Insert Terminals

Overview

VRLA batteries are the type many people call a sealed lead acid (SLA) battery, because they are never topped up with water.

This one is a 12 V, 24 Ah (nominal) block from the Yucel range of maintenance-free lead acid batteries, with the standard ABS case.

Browse more specialist and industrial batteries.

How it works

  • Lead acid chemistry: the battery stores energy in lead plates and acid, and it prefers to be kept charged rather than left flat.
  • Valve regulated: each cell is sealed in normal use. A valve lets gas escape if pressure builds, then keeps the cell sealed again.

Browse more batteries and battery packs.

Where to use it

Follow the battery type and size the equipment's maker asks for when replacing a standby battery in an alarm panel or power supply.

Charging runs from -15°C to +50°C and storage and discharge from -20°C to +60°C, so allow for that where the equipment sits somewhere unheated.

Browse more burglar and intruder alarm batteries.

What the figures mean in practice

  • 23.51 Ah at C20 and 22.23 Ah at C10: the first figure is measured over 20 hours and the second over 10 hours, both to 1.75 V per cell at 20°C. The 24 Ah figure is the nominal rating.
  • 150 A for 1 minute: this is the maximum discharge current, a limit to stay under rather than a figure to design to.
  • 5.8775 A charge limit: this applies to cyclic or boost charging only.
  • 14 mΩ impedance: impedance shows how much the battery resists current at 1 kHz.

Installing it

  • Position: almost any way round works, but do not leave it permanently upside down.
  • Connections: as a rule, note which lead goes where before removing the old battery, then make the new connections fully home.
  • Short circuits: take care with tools near the terminals, since a lead acid battery can cause a spark or burn.

Planning your system

When replacing a battery, match the voltage, the terminals and the physical size first, then the capacity.

Read the guide to replacing burglar alarm batteries before changing a panel battery.

Old batteries must be recycled at the end of their life under the law in force.

Browse more Yuasa batteries.

Standards and ratings explained

  • UL94:HB: this is a flammability rating for plastics. HB is the basic level; the flame retardant option uses a UL94:V0 case instead.
  • EUROBAT: this battery industry body classes batteries by expected life, and Standard Commercial means 3 to 5 years.
  • IEC61056: an international standard for general purpose lead acid batteries of the valve regulated type.
Yucel Y24-12I 12V 23.51Ah VRLA battery, front view
Yucel

Yucel Y24-12I 12V 24Ah VRLA Battery, M5 Insert Terminals

£60.84 £73.01

The Yucel Y24-12I is a 12 V, 24 Ah (nominal) VRLA battery, where VRLA means valve regulated lead acid, from the Yucel range of maintenance-free lead acid batteries. Its rated capacity is 23.51 Ah at the 20-hour rate (C20). It measures 166.5 x 175 x 125 mm, weighs 7.2 kg typical and has M5 insert terminals.

Key features

For installers

Frequently asked questions

Is it a 24 Ah battery?

Yes, 24 Ah nominal. Its rated capacity is 23.51 Ah at the 20-hour rate (C20) and 22.23 Ah at the 10-hour rate (C10), each to 1.75 V per cell at 20°C.

What size is the Y24-12I?

166.5 mm long, 175 mm wide and 125 mm high, or 125 mm over the terminals, each ±1 mm (±2 mm over the terminals). It weighs 7.2 kg typical.

What charge voltage does it need?

13.65 V (±1%) on float and 14.5 V (±3%) for cyclic or boost charging, both at 20°C.

How long does it last?

Yuasa design life is 5 years at 20°C, and the EUROBAT classification is Standard Commercial, 3 to 5 years.

Is the standard case flame retardant?

No. The standard case is ABS rated UL94:HB; the flame retardant (FR) option has an ABS case rated UL94:V0.

Can it go in a sealed box?

No. VRLA batteries release hydrogen, which mixed with air can become explosive, so do not install it in a sealed enclosure.

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