The Luminous Red Charge RC 18000TT 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 Tall Tubular technology to deliver rapid charging, minimal water topping, and heavy-duty load handling.
Built in a high-density Tall Tubular (TT) design, this battery carries a larger volume of acid above the plates than compact short-tubular alternatives, giving it superior thermal management and better endurance ? making it the right choice for dedicated inverter rooms and homes with ample vertical storage space.
Key Features
Advanced Tubular Plate Engineering: Robust thick-plate structure withstands deep cyclical discharges for steady power during long, frequent outages.
Optimized Spine Alloy Composition: Low-antimony alloy mixture minimizes internal grid corrosion, extending battery lifespan and stabilizing performance in extreme heat.
Fast Charge Acceptance: Recharges rapidly between successive power failures ? ideal for regions with frequent back-to-back outages.
Low Maintenance Design: Highly visible microporous ceramic disc float indicators let you check distilled water levels at a glance while preventing harmful acid fumes from escaping.
Superior Thermal Stability: The Tall Tubular form factor holds a larger acid reserve above the plates, slowing water evaporation and improving endurance during long, continuous power outages.
Technical Specifications
Technical Specifications (Quick Reference)
Specification
Details
Nominal Voltage
12V
Battery Capacity
150 Ah
Technology
Tall Tubular
Total Warranty
36 Months
Warranty Breakdown
18 Months Free Replacement + 18 Months Pro-Rata
Dimensions (L x W x H)
50.2 x 19.1 x 44.0 cm
Filled Weight (Approx.)
~53.5 kg
Water Level Indicators
6 Float Indicators
Best Suited For
Dedicated Inverter Rooms / Heavy Duty Backup
Is the RC 18000TT Right for You?
Best suited if…
You face prolonged outages: Ideal for outages of 4?6+ hours where sustained, stable backup matters most.
You have ample vertical space: The Tall Tubular form factor needs more height clearance than compact trolleys ? best for dedicated inverter rooms or utility spaces.
You live in a hot climate: The larger acid reserve above the plates gives the best thermal management and slower water evaporation of the Red Charge range.
You run medium-to-heavy loads: 150Ah capacity comfortably handles fans, lighting, TVs, and small kitchen appliances through extended power cuts.





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