Sealed Lead Acid Battery Yuasa Y9-12 12V 9Ah, valve-regulated rechargeable battery for backup power

Yuasa Y9-12 is a sealed lead acid (SLA) 12V 9Ah valve-regulated rechargeable battery engineered for backup and standby power applications. The battery delivers a stable 12-volt output and nominal 9 ampere-hours capacity in a compact, maintenance-free sealed design. It is intended for use where reliable secondary power is needed for short-term loads, providing consistent voltage for UPS units, alarm systems, emergency lighting and other small-scale power roles.

Advantages

The valve-regulated sealed lead acid construction eliminates the need for regular electrolyte maintenance and reduces the risk of leakage. Compact dimensions and a standard 12V form factor make the Yuasa Y9-12 easy to install in enclosures designed for SLA batteries. The battery supports frequent cycling as well as long-term standby use due to its stable voltage characteristics and robust internal construction.

Suitable for

• Uninterruptible Power Supplies (UPS) for small servers and network equipment
• Alarm and security control panels
• Emergency and exit lighting systems
• Portable power units and auxiliary backup systems
• Small-scale renewable energy storage and laboratory equipment requiring 12V backup

Key specifications

• Nominal voltage: 12 V
• Nominal capacity: 9 Ah
• Battery type: Sealed lead acid (SLA), valve-regulated
• Rechargeable: Yes
• Maintenance: Maintenance-free, sealed design
• Typical use: Standby and cyclic applications

How to use

Install the Yuasa Y9-12 in a compatible battery holder or enclosure, observing correct polarity. Use a charger or charging circuit designed for sealed lead acid batteries and follow recommended charge voltages and temperature compensation where applicable. For standby applications, keep the battery connected to the charger that maintains float voltage; for cyclic use, apply an appropriate charge/discharge regime to preserve capacity. Avoid deep discharges beyond the batterys recommended depth of discharge to prolong service life.

Usage recommendations

Store and operate the battery in a well-ventilated, dry environment within the manufacturers recommended temperature range. Periodically check terminal connections for corrosion and ensure charging equipment is compatible with sealed lead acid batteries. Replace the battery if it fails to hold expected capacity or shows physical damage.