Battery Panasonic YUASA SWL780V 12V 28.8Ah — sealed lead-acid battery for backup power

Panasonic YUASA SWL780V is a sealed lead-acid backup battery with a nominal voltage of 12V and a rated capacity of 28.8Ah. It is designed for standby and cyclic applications where a maintenance-free, valve-regulated lead-acid (VRLA) battery is required. The compact sealed construction and stable discharge characteristics make this battery suitable for use in uninterruptible power supply (UPS) systems, emergency lighting, telecom cabinets and other backup power installations that need a reliable 12V 28.8Ah replacement.

Advantages

The sealed design ensures low maintenance and eliminates the need for topping up electrolyte. The battery provides stable voltage under load and consistent capacity over its service life, supporting dependable standby operation. Its construction minimizes leakage and gas emissions, allowing safe indoor installation in UPS racks and cabinets. The physically robust casing and standard terminal arrangement simplify replacement tasks and integration with existing backup systems that accept 12V sealed lead-acid batteries.

Suitable for

• Uninterruptible Power Supply (UPS) modules and battery banks
• Emergency and exit lighting systems
• Telecom equipment and network cabinets
• Security and alarm systems requiring standby power
• Small-scale renewable energy storage and DC backup applications

Key specifications

• Nominal voltage: 12 V
• Rated capacity: 28.8 Ah (at standard discharge rate)
• Battery type: Sealed lead-acid, valve-regulated (VRLA)
• Design: Maintenance-free, spill-proof construction
• Typical use: Standby and cyclic applications
• Terminal type: Standard battery terminals for easy replacement

How to use

Install the Panasonic YUASA SWL780V in accordance with the UPS or equipment manufacturer’s instructions, observing correct polarity and secure mechanical mounting. Connect positive and negative terminals using appropriately sized leads and ensure tight, corrosion-free connections. Charge the battery through the designated charging circuit of the UPS or charger that supports sealed lead-acid chemistry and the given voltage. Monitor system voltage and charging parameters during initial commissioning and replace the battery when capacity or runtime falls below required levels.

Usage recommendations

Store and operate the battery in a dry, well-ventilated environment at moderate temperature. Avoid deep discharges and long-term storage in a discharged state; recharge after each use to preserve capacity. Use a compatible charger or UPS charge profile for sealed lead-acid batteries to prevent overcharge or undercharge, and follow local regulations for disposal or recycling of lead-acid batteries.