Sealed AGM battery Yuasa NPL38-12 12V 38Ah for standby and cyclic use

Yuasa NPL38-12 is a sealed AGM lead‑acid battery with a nominal voltage of 12V and a capacity of 38Ah. Designed for both standby and cyclic use, this valve‑regulated battery provides maintenance‑free operation and low self‑discharge. Its sealed construction prevents leaks and reduces the need for periodic servicing, offering a compact and reliable power source for backup systems and light mobility devices.

Advantages

The sealed AGM construction provides stable performance across a range of temperatures and orientations while minimizing gas emissions and electrolyte loss. Valve regulation and robust internal plate design improve safety and extend service life under recommended charging and storage conditions. Low self‑discharge and maintenance‑free operation make the battery suitable for long periods of standby use, while its moderate weight and compact dimensions enable straightforward replacement or integration into confined equipment compartments.

Suitable for

• Uninterruptible Power Supplies (UPS) and emergency backup systems
• Alarm and security systems
• Telecommunications and network backup
• Light mobility devices and small electric vehicles
• Portable power packs and medical standby equipment

Key specifications

• Nominal voltage: 12 V
• Nominal capacity: 38 Ah (C20)
• Battery type: Sealed AGM (absorbed glass mat) lead‑acid
• Design: Valve‑regulated, maintenance‑free
• Use modes: Standby and cyclic operation
• Storage: Low self‑discharge for extended storage periods
• Mounting: Suitable for horizontal and certain inclined positions (follow manufacturer's instructions)

How to use

Install the battery in a clean, dry, and well‑ventilated compartment, observing correct polarity and secure terminal connections. Charge the battery with a compatible charger or charging system set to recommended lead‑acid AGM charge profiles; avoid prolonged overcharging or deep discharging. For standby applications, keep the battery on float charge according to the equipment manufacturer's specifications. For cyclic use, follow the recommended charge and discharge limits to maximize cycle life and avoid excessive depth of discharge.

Recommendations

Observe safety guidelines when handling and installing the battery: avoid short circuits, protect terminals, and follow local regulations for disposal and recycling. Periodically check system charge voltage and connections, and replace the battery when capacity declines below the required operational threshold for your application.