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TAB 5GVRLA18 AGM 12V 18Ah Battery – Alarms, UPS and Emergency Power
Compact AGM 12V 18Ah battery from the TAB 5GVRLA range, made with high-purity raw materials. Its small footprint (181 x 76 x 167 mm, 5.4 kg) makes it ideal for alarm control panels, small-scale UPS equipment and emergency lighting systems. Low self-discharge (≤3%/month) and a 5-year design life.
TAB 5GVRLA18: a compact AGM battery for alarms and emergency equipment
The 5GVRLA18 (12V 18Ah) is the smallest model in the TAB 5GVRLA range, built with AGM technology and high-purity raw materials. Its compact footprint — just 181 x 76 x 167 mm and 5.4 kg — makes it the natural choice whenever available space is limited: alarm control panel enclosures, small electrical cabinets, portable emergency equipment or entry-level UPS units.
An AGM battery built for tight spaces
Like the rest of TAB's AGM family, the electrolyte is absorbed into a microporous fiberglass mat, giving it an immediate response to current spikes (up to 270 A over 5 seconds) with no maintenance required. It's a sealed battery, so it can be installed vertically or horizontally depending on the housing equipment.
Key strengths
- "Standard Commercial" classification under EUROBAT.
- Low self-discharge (≤3% per month), suitable for equipment left in standby for long periods.
- High gas recombination efficiency and maximum charge efficiency.
- Compact, lightweight design (5.4 kg), easy to fit into small equipment.
- Vertical or horizontal installation, maintenance-free.
An important note on design life
Unlike the higher-capacity models in the 5GVRLA range (10-year design life), this 18Ah model has a 5-year design life at 25°C, matching its "Standard Commercial" EUROBAT classification. Worth keeping in mind when comparing models within the same series.
Applications
Alarm and security systems
Its compact size and float-mode reliability make it one of the most common batteries used in alarm control panels, access control panels and backed-up video surveillance systems.
Small-scale UPS and EPS
Backup power for compact UPS units and emergency power systems (EPS) where high capacity isn't needed, but reliability and small size are.
Emergency lighting and generator starting
Emergency luminaires, safety signage, and also as a support battery for starting small generators.
Technical data
| Model | 5GVRLA18 (12V 18Ah) |
| Technology | AGM |
| Capacity 20hr (1.75V/cell) | 18 Ah |
| Capacity 10hr (1.75V/cell) | 16.7 Ah |
| Capacity 5hr (1.75V/cell) | 16.02 Ah |
| Capacity 1hr (1.70V/cell) | 11.45 Ah |
| Dimensions (L x W x H) | 181 x 76 x 167 mm |
| Weight | 5.4 kg |
| Internal resistance | 14 mΩ (fully charged, 25°C) |
| Max. discharge current (5 sec.) | 270 A |
| Short circuit current | 460 A |
| Self-discharge | ≤3% per month (25°C) |
| Cycle charge voltage | 2.45 V/cell (-3.5mV/°C/cell), max charge current 5.4 A |
| Float charge voltage | 2.27 V/cell (-3.5mV/°C/cell) |
| Design life | 5 years @ 25°C |
| Standards | IEC 61056-1/2, JIS C8702-1/2, EUROBAT guide |
Frequently asked questions
How long does this battery last?
Its design life is 5 years at 25°C, matching its "Standard Commercial" EUROBAT classification — shorter than the higher-capacity 5GVRLA models (10 years).
Is it suitable for alarm control panels?
Yes, it's one of its most common applications thanks to its compact size, low self-consumption and float-mode reliability.
Does it require maintenance?
No. It's a sealed AGM battery, with no water top-ups or level checks required.
Can it be installed horizontally?
Yes, it supports vertical or horizontal installation depending on the space available in the equipment.
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