Product Description
The NPL24-12 is a 12V 24Ah sealed lead-acid (VRLA AGM) battery, designed for long-life standby and backup power applications such as UPS systems, telecom equipment, security systems, and emergency power supplies.
It is part of the Yuasa NPL series, which is an upgraded long-life version of standard NP batteries, offering improved durability and extended service life (typically 10–12 years design life under standby conditions).
Description
The NPL24-12 is a maintenance-free VRLA battery using AGM (Absorbent Glass Mat) technology, where the electrolyte is fully absorbed in fiberglass separators. This makes it spill-proof, safe for indoor use, and capable of reliable standby performance.
It is engineered for high reliability in critical backup systems, delivering stable 12V output and good recovery after deep discharge. The design focuses on long service life, low self-discharge, and strong performance in float charging applications.
Key Features
• Sealed maintenance-free VRLA AGM battery
• Long-life design (EUROBAT classification: 10–12 years)
• High capacity 24Ah backup power output
• Stable performance in standby and UPS applications
• Low self-discharge (~3% per month at 20°C)
• Deep discharge recovery capability
• Strong ABS housing for impact and vibration resistance
• Spill-proof and leak-resistant construction
• High charging efficiency with lead-calcium grid design
• Can be installed in multiple orientations (except inverted use)
Specifications
• Product Type: Sealed Lead Acid Battery (VRLA AGM)
• Model: NPL24-12
• Nominal Voltage: 12V DC
• Capacity: 24Ah (20-hour rate)
• Technology: AGM (Absorbent Glass Mat)
• Energy Capacity: approx. 288Wh
• Dimensions: approx. 166 × 175 × 125 mm
• Weight: approx. 9–9.8 kg
• Terminal Type: M5 threaded terminals
• Internal Resistance: approx. 9–10 mΩ
• Float Charging Voltage: approx. 13.5V – 13.8V
• Cycle Use Voltage: approx. 14.4V – 15.0V
• Operating Temperature: approx. -20°C to +60°C
• Storage Self-Discharge: ~3% per month at 20°C
• Design Life: 10–12 years (standby use)
• Application: UPS systems, telecom backup, emergency lighting, security systems, industrial power backup

