Orland battery D12-250/12V250Ah specification emergency battery

Product Overview

The Auland D12-250 is a 12V 250Ah valve-regulated sealed lead-acid maintenance-free battery. It adopts advanced production technology and high-quality materials, featuring high capacity, long service life, stable and reliable performance, and is suitable for large backup power and energy storage scenarios.

Core Performance Features

1. Maintenance-free Design

   • Adopts absorbed glass mat (AGM) technology, with the electrolyte fixed in the separator, no liquid replenishment required during use, and maintenance is convenient.
   • Sealed valve-controlled structure, with gas recombination efficiency ≥99%, internal gas cycle reaction during charging, no acid mist leakage, meeting safety and environmental protection requirements.

2. Long Service Life and High Durability

   • The plates are made of lead-calcium multi-component alloy, with excellent corrosion resistance, and the designed service life under floating charge state can reach 12 years (25℃ environment).
   • Supports deep discharge (depth of discharge ≥85%), with cycle life ≥350 times (100% depth of discharge), suitable for high-frequency charge-discharge scenarios.

3. Low Self-discharge Rate and High Consistency

   • High-purity raw materials reduce the self-discharge rate, with monthly self-discharge rate ≤2.5% at 25℃ environment, and capacity retention rate ≥92% after 6 months of storage.
   • Automated production line combined with precision detection technology ensures that the voltage difference of batteries in the same batch ≤0.02V, and internal resistance difference ≤3%, which is convenient for multi-group series-parallel combination applications.

4. Wide Temperature Adaptability

   • Operating temperature range: -20℃~50℃ (discharge), -5℃~40℃ (charge), which can operate stably under complex climatic conditions.
   • The capacity retention rate is ≥88% at low temperature (-10℃), and the self-discharge rate is only 4%/month at high temperature (40℃), with controllable performance decay.

5. Safety and Structural Advantages

   • Built-in pressure relief valve (opening pressure 10~30kPa) to prevent internal overpressure; the shell is made of flame-retardant ABS material (UL94 V-0 grade), which meets fire protection standards.
   • The terminals are M10 specification, supporting multiple installation methods such as vertical and side placement. The dimensions are 522mm×268mm×228mm (length × width × height), and the weight is about 68kg.

Specifications and Parameters

Typical Application Scenarios

1. Large Data Centers and Communication Hubs: As the core backup power supply for UPS/EPS systems, 20 batteries in series can form a 240V DC system to meet the power backup demand for more than 12 hours.
2. Power and Energy Field: Suitable for substation DC screens, photovoltaic/wind energy storage systems, supports large-capacity and long-term energy storage, and is suitable for off-grid power generation scenarios.
3. Industrial and Rail Transit: Used for railway signal systems, backup power supplies for industrial automation equipment, and can quickly start power supply even at -15℃ low temperature.
4. Medical and Security Systems: Provide stable and reliable backup power for hospital emergency power supplies and large-scale monitoring networks, ensuring the continuous operation of key equipment.

Usage Notes

• Installation Specifications: The battery pack must be installed in a well-ventilated environment, avoiding direct sunlight; ensure that the specifications of connecting cables match during series connection, and the contact points are firm and reliable.
• Temperature Management: It is recommended to configure air conditioners or cooling fans in high-temperature environments to maintain the ambient temperature ≤25℃ to extend the service life; preheating devices can be matched in low-temperature environments to improve charging efficiency.
• Storage and Maintenance: Fully charge before long-term storage, perform supplementary charging every 3 months, the storage environment should be dry, free of corrosive gases, and avoid stacking under heavy pressure.