Luminous Red Charge RC 15000/18000 Inverter Battery

Product Highlights

• Manufacturer: Luminous Power Technologies Pvt. Ltd.
• Model Range: Red Charge Series - Tubular Inverter Battery
• Available Models: RC 15000 PRO (Short Tubular), RC 18000ST (Short Tubular), RC 18000TT (Tall Tubular)
• Technology: Advanced tubular plate engineering with low-antimony spine alloy grids
• Nominal Voltage: 12V (single-battery setup across all variants)
• Capacity Range: 120Ah – 150Ah
• Maintenance: Microporous ceramic disc float indicators for at-a-glance water level checks
• Warranty: Up to 48 months (varies by model - see comparison table)

Product Description

The Luminous Red Charge Series powers your home seamlessly through extended outages with one of India's most trusted backup power lineups. It combines high-grade spine alloy grids with advanced tubular technology to deliver rapid charging, minimal water topping, and heavy-duty load handling.

Available in space-saving Short Tubular (ST) and high-density Tall Tubular (TT) designs, the series lets you choose the perfect physical footprint and backup capacity for your specific home or office layout - from compact apartment trolleys to dedicated inverter rooms with heavy-duty demands.

Technical Specifications — Variant Comparison

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FAQs

1) What is the main structural difference between Short Tubular (ST) and Tall Tubular (TT) batteries?

The primary difference lies in their physical shape and acid volume distribution. Short Tubular batteries (RC 15000 PRO & RC 18000ST) are wider and shorter, making them highly compact and easy to fit inside small apartments or standard storage trolleys. Tall Tubular batteries (RC 18000TT) are taller and narrower; they contain a larger volume of acid above the plates, providing superior thermal management, slower water evaporation, and better endurance during long, continuous power outages.

2) Can I use a 150Ah battery with an inverter that previously ran on a 120Ah battery?

Yes, absolutely. All three batteries in this series operate on standard 12V DC architecture. Upgrading from a 120Ah (RC 15000 PRO) to a 150Ah variant (RC 18000ST or TT) simply means your inverter will deliver a longer backup duration for the exact same connected electrical load. Just ensure your existing inverter supports a 12V single-battery setup.

3) How much backup time will these individual variants provide for my home?

Backup time directly depends on the total wattage of your running appliances. On a typical load of 3 Fans, 3 LED Bulbs, and 1 LED TV (approx. 300W–350W): the RC 15000 PRO (120Ah) provides roughly 3 to 3.5 hours of continuous backup, while the RC 18000ST & RC 18000TT (150Ah) provide roughly 4.5 to 5 hours.

4) Why does the 120Ah RC 15000 PRO have a longer warranty than the 150Ah models?

The "PRO" designation signifies a premium grid and chemical formulation that allows Luminous to offer an extended 48-month warranty window (24 months free replacement + 24 months pro-rata). The standard Red Charge 18000 series (ST and TT) is optimized for higher-capacity raw output value and carries a competitive 36-month warranty cycle (18 months free replacement + 18 months pro-rata).

5) How often do these Red Charge tubular batteries require distilled water topping?

Thanks to the high-quality spine alloy composition that reduces water loss, these batteries typically require water topping only once every 3 to 6 months, depending on your local climate and usage frequency. Monitor the 6 red-and-green float indicators on top of the battery; when the green indicator dips toward the red line, it's time to top up with pure distilled water.

Returns & Exchange Policy

1. Return within 24 hours of delivery for:
   • Damaged or defective product
   • Wrong or missing item
2. Product cannot be returned once installed or used
3. Refer to Refund Policy for complete details