Sealed Lead-Acid UPS Battery GEMBIRD BAT-6V4.5AH — 6 V, 4.5 Ah, Black

The Gembird BAT-6V4.5AH is a sealed lead-acid UPS battery with a nominal voltage of 6 V and a rated capacity of 4.5 Ah. It is supplied in a compact black housing and is suitable for small uninterruptible power supply systems, emergency lighting, and other low-power backup applications.

Advantages

This 6 V 4.5 Ah battery offers a stable DC output and a sealed, maintenance-free design that does not require topping up electrolyte. Its compact dimensions and moderate weight make it easy to install in confined spaces, and the battery provides multiple discharge-rate capacity ratings for reliable performance under different load conditions.

Suitable for

• Small UPS units and power backup modules
• Emergency lighting and alarm systems
• Portable equipment requiring 6 V standby power
• Hobby electronics, robotics, and DIY projects with low to moderate power draw

When it may not be suitable

This battery is not intended for high-current starter applications or devices that require continuous heavy discharge for long periods. For systems demanding higher capacity, longer runtime, or rapid recharge cycles, a larger or different battery chemistry may be more appropriate.

Key specifications

• Nominal voltage: 6 V
• Rated capacity (20 h, to final voltage 1.75 V/cell): 4.5 Ah
• Rated capacity (10 h, to final voltage 1.75 V/cell): 4.28 Ah
• Rated capacity (5 h, to final voltage 1.7 V/cell): 3.83 Ah
• Rated capacity (1 h, to final voltage 1.3 V/cell): 2.48 Ah
• Type: sealed lead-acid (gel/VRLA) maintenance-free
• Colour: black
• Weight: approximately 0.86 kg
• Approximate dimensions: width 70 mm, height 100 mm

How to use

Install the battery in the device following the manufacturer’s instructions for polarity and secure mounting. Use a compatible charger or UPS charging circuit designed for 6 V sealed lead-acid batteries, and observe recommended charge voltages and currents for long service life. Store the battery in a cool, dry place and avoid deep discharges; recharge promptly after use to prevent capacity loss.

What to consider before purchase

• Confirm the device requires a 6 V, ~4.5 Ah battery and check terminal type and polarity.
• Ensure physical dimensions and weight fit your installation space.
• Verify compatibility with your charger or UPS charging profile for sealed lead-acid batteries.
• Consider expected runtime and whether a higher-capacity battery is needed.

Usage recommendations

For best results, use with a charger or UPS that provides proper float and cyclic charge settings for sealed lead-acid batteries, avoid prolonged storage in a discharged state, and perform periodic checks of voltage and load performance to maintain reliable backup operation.