Olander Battery D12-250/12V 250Ah emergency battery
Contact Info
- Room 313, 3rd Floor, Building 1, Courtyard 4, Fze Road, Fangshan District, Beijing, 10000
- 胡祥飞
- 17662238989
- zxc123321_0823@qq.com
Product Overview
The Olander D12-250 is a 12V 250Ah valve-regulated sealed lead-acid maintenance-free battery. Adopting advanced production processes and high-quality materials, it features high capacity, long service life and stable reliability, making it suitable for large-scale backup power and energy storage scenarios.
Core Performance Features
Maintenance-Free Design
- Adopts Absorbed Glass Mat (AGM) technology, with electrolyte fixed within the separator. No liquid replenishment is required during use, ensuring convenient maintenance.
- Sealed valve-controlled structure with gas recombination efficiency ≥99%. Internal gas circulates and reacts during charging, with no acid mist leakage, meeting safety and environmental protection requirements.
Long Service Life and High Durability
- Polar plates are made of lead-calcium multi-alloy material, with excellent corrosion resistance. The designed service life under floating charge is up to 12 years (at 25℃).
- Supports deep discharge (depth of discharge ≥85%), with cycle life ≥350 times (at 100% depth of discharge), suitable for high-frequency charge-discharge scenarios.
Low Self-Discharge and High Consistency
- High-purity raw materials reduce self-discharge rate. At 25℃, the monthly self-discharge rate is ≤2.5%, and the capacity retention rate after 6 months of storage is ≥92%.
- Automated production lines combined with precise testing processes ensure a voltage difference ≤0.02V and internal resistance difference ≤3% for batteries in the same batch, facilitating series-parallel combination applications of multiple battery packs.
Wide Temperature Adaptability
- Operating temperature range: -20℃~50℃ (discharge), -5℃~40℃ (charging), enabling stable operation in complex climate conditions.
- Capacity retention rate ≥88% at low temperature (-10℃), and self-discharge rate is only 4% per month at high temperature (40℃), with controllable performance degradation.
Safety and Structural Advantages
- Built-in pressure relief valve (opening pressure 10~30kPa) to prevent internal overpressure; the casing is made of flame-retardant ABS material (UL94 V-0 grade), meeting fire safety standards.
- Terminals are of M10 specification, supporting multiple installation methods such as vertical and horizontal placement. Dimensions are 522mm×268mm×228mm (length × width × height), with a weight of approximately 68kg.
Specification Parameter Table
| Item | Parameter Value |
|---|---|
| Rated Voltage | 12V |
| Rated Capacity (20HR) | 250Ah (C20, 25℃) |
| Internal Resistance (mΩ) | ≤3.0mΩ (25℃) |
| Charging Voltage | Equalizing charge: 14.5~14.9V Floating charge: 13.6~13.8V |
| Maximum Charging Current | 75A (0.3C) |
| Protection Degree | IP55 (dust-proof and spray-proof) |
| Compliant Standards | IEC 60896, GB/T 19638.2 |
Typical Application Scenarios
- Large Data Centers and Communication Hubs: Serves as the core backup power for UPS/EPS systems. A series of 20 single units can form a 240V DC system, meeting backup power demands for over 12 hours.
- Power and Energy Fields: Suitable for substation DC panels, photovoltaic/wind energy storage systems, supporting large-capacity long-duration energy storage and adapting to off-grid power generation scenarios.
- Industry and Rail Transit: Used as backup power for railway signal systems and industrial automation equipment, enabling rapid startup and power supply even at low temperature of -15℃.
- Medical and Security Systems: Provides stable and reliable backup power for hospital emergency power supplies and large-scale monitoring networks, ensuring continuous operation of critical equipment.
Usage Precautions
- Installation Specifications: Battery packs should be installed in well-ventilated environments, avoiding direct sunlight. When connecting in series, ensure matching cable specifications and firm contact points.
- Temperature Management: For high-temperature environments, it is recommended to configure air conditioners or cooling fans to maintain the ambient temperature ≤25℃ for extending service life. For low-temperature environments, preheating devices can be used to improve charging efficiency.
- Storage and Maintenance: Fully charge before long-term storage, perform a supplementary charge every 3 months. The storage environment should be dry, free of corrosive gases, and avoid stacking with heavy loads.
| Electrical Equipment & Supplies/Batteries/Storage Batteries | |
