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Yuasa Lead-acid battery with 12V and 38Ah - NP38-12I VDS

Description

Product information

The Yuasa NP38-12I VDS is an industrial, valve-regulated lead-acid battery (VRLA) with a nominal voltage of 12 V and a capacity of 38 Ah (20h). Equipped with robust AGM technology and VdS approval, this battery is the ideal solution for safety-critical applications with high performance requirements.

Highlights at a glance

  • High capacity: 38 Ah (20h) / 35.3 Ah (10h) at 12 V for continuous power supply.
  • VdS-certified: For use in safety-relevant areas (VdS no. G 182024).
  • Maintenance-free: AGM technology with > 99 % gas recombination.
  • Powerful: Up to 500 A discharge current (1 second) and 804 A short-circuit current.
  • Safe connection: M5 internal thread or bolt connection with 2.45 Nm torque.
  • Long-lasting: EUROBAT class "Standard Commercial" up to 5 years service life.

Powerful for safety-critical systems

The NP38-12I is ideal for applications where reliable, uninterruptible power is required. With a 20h capacity of 38 Ah and a 10h capacity of 35.3 Ah, the battery provides consistently high power even during prolonged operation. The maximum current output is 500 A (1 second), making it ideal for systems with short-term high-load requirements.

Maintenance-free operation with high safety

Thanks to AGM technology (Absorbent Glass Mat), the battery is completely maintenance-free and gas-tight. The integrated low-pressure relief valves ensure safe pressure equalisation within the cells. Installation is possible in any position, except for permanently upside-down mounting.

 

Self-discharge is only approx. 3 % per month at 20 °C, so the battery remains ready for use even after long storage. The shock-resistant ABS casing is optionally available in a flame-retardant version in accordance with UL94:V0.

Features

 
ModelYuasa NP38-12I VDS
Battery typeVRLA AGM (maintenance-free)
Nominal voltage (V)12
Capacity (Ah)38 (at 20h rate)
Maximum discharge current380A (for 5 seconds)
Charging voltage (trickle charge)13.65V (±1%)
Charging voltage (cyclic operation)14.7V (±3%)
Operating temperature (°C)-15 ~ 50
Storage temperature (°C)-20 ~ 50
Service lifeUp to 5 years (according to Yuasa design)
Dimensions (L/W/H, mm)197 x 165 x 170
Weight (kg)14.6
ConnectionM6 thread
CertificationsIEC 60896-21+22, VdS, UL


 

FAQs about the Yuasa lead-acid battery with 12V and 38Ah

For which applications is the NP38-12I VDS suitable?

The battery is particularly suitable for:

  • VdS-certified fire detection and security systems
  • Uninterruptible power solutions (UPS)
  • Safety and emergency lighting
  • Telecommunications systems
  • Automation and control
  • Applications with high power requirements

Is flexible installation possible?

Yes, the battery may be operated in any position, except for permanently upside-down orientation.

How safe is the operation?

The battery features integrated low-pressure relief valves, is completely maintenance-free and meets the highest safety and quality standards.

How long is the float and cycle lifetime?

According to EUROBAT, the battery meets the “Standard Commercial” class with an expected service life of 3–5 years during float operation. In cyclic use, up to 1,000 charge cycles are possible.

Which charging voltage and charging parameters apply?

  • Float charging voltage (20 °C): about 13.65 V per block (≈ 2.275 V/cell), compensation –3 mV/cell/°C
  • Cycle/boost charging voltage: about 14.5 V per block (≈ 2.42 V/cell), compensation –4 mV/cell/°C
  • Maximum cyclic charging current: up to 9.5 A (~0.25 C)
  • Float charging current limitation: none.
     

In which temperature ranges can the battery be operated and stored?

  • Charging: −15 °C to +50 °C
  • Discharging: −20 °C to +60 °C
  • Storage (fully charged): −20 °C to +60 °C, ideally < +50 °C
  • Self-discharge: about 3 % per month at 20 °C.

Properties

Capacity: 38Ah
Tension: 12V
VDS: G 182024

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