The CHISEN OPzS 2V 500Ah battery is a premium stationary lead-acid battery featuring Flooded technology. This comprehensive guide covers specifications, applications, performance, and maintenance for the 500Ah model.
1. Product Overview
The CHISEN OPzS 2V 500Ah battery represents CHISEN Battery’s advanced Flooded technology, designed for demanding stationary energy storage applications. The “OPzS” designation follows the IEC international standard for tubular plate stationary VRLA batteries, while “500Ah” indicates the rated capacity of 500 ampere-hours at the standard C20 discharge rate.
This 2V cell format allows flexible system configuration: series connection achieves higher system voltages (48V, 96V, 120V), while parallel strings increase total capacity. The 500Ah capacity makes it ideal for solar energy storage systems, telecom base stations, and industrial UPS applications requiring reliable long-duration backup power.
2. Technical Principles and Construction
The OPzS 2V 500Ah uses tubular flooded (富液) technology, the original industrial lead-acid design trusted for decades in heavy-cycle applications. Key features:
- Tubular positive plates: Same wound tube construction as GEL, providing exceptional cycle life in daily cycling applications.
- Liquid electrolyte: Free-flowing sulfuric acid provides maximum ionic conductivity and heat dissipation — ideal for high-current and high-temperature applications.
- Transparent container: Allows visual level checking of electrolyte.
- Plante negative plates: Maximize surface area for high discharge currents.
Flooded batteries require periodic water maintenance but offer superior cycle life and heat tolerance compared to sealed alternatives.
3. Application Scenarios
4. Performance Advantages
The CHISEN OPzS 2V 500Ah offers these key performance characteristics:
- Cycle life: 1,500–2,000 cycles at 80%% DoD — the longest cycle life of any lead-acid technology in daily cycling conditions.
- Float life: 18–25 years at 25C — the gold standard for stationary applications.
- Operating temperature: -20C to +60C — excellent for high-temperature industrial environments.
- Heat dissipation: Liquid electrolyte enables superior thermal management in high-current applications.
- Deep discharge tolerance: Excellent recovery from repeated deep discharges without capacity loss.
Flooded tubular batteries are the traditional choice for heavy industrial applications where periodic water maintenance is feasible and maximum cycle life is required.
5. Maintenance Guide
The CHISEN OPzS 2V 500Ah requires regular water maintenance:
- Water top-up: Check monthly. Top up with distilled water to the indicated level (10–15mm above plates) after a full charge. Never let plates become exposed.
- Equalization charging: Every 30–60 days, perform an equalization charge at 14.4V per 12V unit for 4–8 hours. This prevents capacity imbalance between cells.
- Terminal maintenance: Clean terminals and apply petroleum jelly. Check inter-cell connectors for tightness.
- Specific gravity: Measure with hydrometer every 3–6 months. Full charge specific gravity: 1.240–1.280 at 25C.
- Safety: Always wear eye protection when handling. Ensure adequate ventilation to prevent hydrogen gas accumulation.
6. Market Prospects and Industry Trends
The global market for stationary lead-acid batteries continues to grow, driven by several key trends that position the CHISEN OPzS 2V 500Ah for strong demand:
- Renewable energy expansion: Solar installations worldwide require reliable energy storage, with OPzS technology the proven choice for large-scale solar-plus-storage.
- Telecom infrastructure growth: 5G rollout globally demands more backup power, creating sustained demand for 500Ah class batteries.
- Energy security concerns: Grid instability in emerging markets drives adoption of battery backup for critical infrastructure.
- Environmental regulations: OPzS technology meets evolving environmental standards with OPzS recyclable materials and leak-proof designs.
CHISEN Battery’s 8 global factories and 70 million kVAh annual capacity ensure reliable supply to distributors and EPC contractors worldwide. Our OPzS 2V 500Ah battery is available with CE, ISO9001, ISO14001, and TUV Rheinland certifications.
Need a Quote on CHISEN OPzS 2V 500Ah?
CHISEN Battery manufactures OPzS 2V batteries in all capacities from 100Ah to 3000Ah. Contact our sales team for specifications, pricing, and lead times.
| Factory | 8 global factories | 70M kVAh/year |
| Certifications | CE, ISO9001, ISO14001, TUV Rheinland |
| Tel | +86 131 2666 8999 |
| jack@chisen.cn | |
| Web | www.chisen.cn |
