Description
12V 200Ah Gel Battery Overview
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Maintenance-Free Operation: Sealed valve-regulated design eliminates the need to check water levels or clean terminals—install it and forget it .
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Deep Cycle Performance: Engineered for repeated deep discharges, making it ideal for daily solar cycling where batteries charge during the day and power loads at night .
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Safe & Spill-Proof: Gel electrolyte immobilizes the acid, so no liquid spills even if the casing is damaged or the battery is tilted .
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Temperature Resilient: Performs reliably across a wide temperature range, handling both hot summers and cool conditions common in our region .
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Long Service Life: Designed for years of reliable service with proper charging and depth of discharge management .
12V 200Ah Gel Battery Technical Specifications
| Specification | Value |
|---|---|
| Nominal Voltage | 12V |
| Nominal Capacity (10HR) | 200Ah (20A discharge to 1.80V/cell at 25°C) |
| Capacity at 5HR | 170Ah (34A) |
| Capacity at 3HR | 150Ah (50A) |
| Capacity at 1HR | 120Ah (120A) |
| Dimensions (L x W x H) | 522mm x 240mm x 219mm (±2mm) |
| Weight | Approx. 57-62kg depending on manufacturer |
| Terminal Type | M8 bolt-and-nut copper terminal |
| Internal Resistance | ≤4mΩ fully charged |
| Max Discharge Current | 2000A (5 seconds) |
| Short Circuit Current | 3430A |
| Cycle Charging Voltage | 14.1V – 14.4V at 25°C |
| Standby Charging Voltage | 13.5V – 13.8V at 25°C |
| Max Charge Current | 40A – 50A |
| Operating Temperature | Discharge: -20°C to 60°C / Charge: 0°C to 50°C |
| Self-Discharge | <3% per month at 25°C |
| Design Life | 10-15 years (float service at 25°C) |
What Is Gel Technology?
Gel batteries are a type of valve-regulated lead-acid (VRLA) battery where the electrolyte is mixed with fine silica particles, turning it into a thick, immobilized gel . Unlike flooded batteries that contain liquid acid, gel batteries have no free liquid inside—the gel remains solid between the plates .
This design offers several practical benefits for solar installations:
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No Maintenance: Never add water, check specific gravity, or clean acid spills .
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Safe Installation: Can be mounted in living spaces, vehicles, or enclosed cabinets without ventilation concerns .
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Position Flexibility: Install on its side if needed (though upside-down is not recommended) .
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Vibration Resistant: Ideal for mobile applications like caravans or boats .
Cycle Life Expectations
The longevity of your 12V 200Ah gel battery depends heavily on depth of discharge (DoD):
| Depth of Discharge | Expected Cycles |
|---|---|
| 30% DoD | 1800 – 2400 cycles |
| 50% DoD | 750 – 1200 cycles |
| 80% DoD | 600 cycles |
For optimal lifespan in our local conditions, we recommend limiting daily discharge to 50% or less.
Applications
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Solar Energy Storage: Store daytime solar power for nighttime use in off-grid and hybrid systems .
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UPS Backup Power: Provide reliable backup for computers, security systems, and essential loads during outages .
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Telecom Systems: Support critical communication infrastructure with dependable power .
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Marine & RV: Power onboard systems in boats, caravans, and campers .
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Medical Equipment: Safe, maintenance-free power for sensitive medical devices .
Installation Guidelines
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Location: Install in a clean, dry, well-ventilated area away from direct sunlight and heat sources. Despite being sealed, cool temperatures extend battery life.
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Orientation: While gel batteries can be mounted on their sides, upright installation is preferred for longest life .
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Ventilation: No special ventilation is required for normal operation, but ensure some airflow to prevent heat buildup .
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Connections: Tighten M8 terminals securely (8-10 Nm) and apply anti-corrosion spray or petroleum jelly to prevent terminal corrosion.
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Cabling: Use appropriately sized cables to handle expected currents without voltage drop.
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Series/Parallel: For 24V or 48V systems, batteries must be matched in age, type, and capacity. Use batteries from the same batch when possible.
Charging Recommendations
Proper charging is essential for gel battery longevity:
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Use a Gel-Compatible Charger: Gel batteries require specific voltage settings—do not use chargers designed for flooded batteries or AGM without checking compatibility.
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Charge Voltage: Set absorption voltage to 14.1V-14.4V and float voltage to 13.5V-13.8V (temperature compensated) .
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Temperature Compensation: Adjust voltage by -30mV/°C for charging and -20mV/°C for float as temperature varies from 25°C .
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Charge Current: Limit to 40A-50A maximum for this 200Ah battery .
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Equalization: Do not equalize gel batteries unless specifically recommended by the manufacturer—excessive voltage damages gel cells.
Maintenance
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Visual Inspection: Check terminals monthly for corrosion and tightness.
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Clean Surface: Keep battery top clean and dry to prevent self-discharge through surface contamination.
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State of Charge: Monitor voltage regularly. A rested battery at 12.7V+ is fully charged; 12.0V indicates approximately 50% discharge.
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Storage: If storing long-term, recharge every 3-6 months to prevent sulfation .
Why Choose Gel for Solar?
For many homes and businesses in our area, gel batteries offer the ideal balance of performance, safety, and value:
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No Watering: Unlike flooded batteries, you never need to check water levels—especially valuable for hard-to-reach installations.
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Safe Indoors: Can be installed inside homes, shops, or offices without acid fumes or ventilation concerns .
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Deep Cycle Capability: Handles the daily charge-discharge rhythm of solar systems effectively .
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Temperature Tolerant: Performs reliably in our climate without the degradation seen in some other battery types .
Contact Us
Ready to store your solar energy reliably with 12V 200Ah gel batteries? Contact our team today for expert advice, pricing, or to discuss your specific requirements.
📞 Call / WhatsApp: 0794485343
📧 Email: info@globussolar.com
🌐 Web: www.globussolar.com
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