Which COSLIGHT battery is best for a 3BHK home?

COSLIGHT 2200CT (150Ah) is recommended for typical 3BHK usage, providing balanced backup duration and battery life. For heavier loads or longer backup requirements, consider the 200Ah 3000CT model.

Do you deliver outside of Delhi?

Yes, SAMCO BATTERY provides Pan-India delivery service for all COSLIGHT battery models with secure packaging and tracking.

Do these batteries need water top-ups?

No. SMF/VRLA batteries use sealed valve-regulated technology that recombines gases internally, eliminating the need for water top-ups or routine maintenance.

VRLA Battery | Maintenance Free Inverter Battery | SAMCO

Top Maintenance-Free Inverter Battery for Homes in India

Looking for a maintenance free inverter battery? COSLIGHT Thin Plate Pure Lead (TPPL) SMF/VRLA batteries from SAMCO BATTERY deliver reliable backup with Pan-India delivery and manufacturer warranty.

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36-Month Warranty
Maintenance-Free (No Water)
Pan-India Delivery
Best Price — Delhi NCR

COSLIGHT maintenance-free SMF (VRLA) inverter battery — sealed design and terminal view

VRLA Technology — Truly Maintenance-Free

100% Sealed Design

No acid spillage, no corrosion — safe for indoor use.

Zero Water Top-Up

Gases recombine internally — no routine maintenance.

Fit & Forget

Install once — enjoy years of reliable backup.

SMF = VRLA; COSLIGHT uses TPPL plates

Advanced TPPL construction keeps gases sealed, eliminating water loss and maintenance — perfect for Indian homes and offices.

COSLIGHT SMF (VRLA) inverter battery — top view showing terminals and sealed design

Why Buy From SAMCO BATTERY?

Genuine products, expert guidance, and Pan-India delivery.

COSLIGHT SMF (VRLA) inverter battery lifestyle image

Manufacturer's Warranty Coverage

36 Months

Inverter Applications

Standard warranty for home and office inverter backup systems

60 Months

Solar Applications

Extended warranty for renewable energy storage systems

Maintenance-free COSLIGHT VRLA battery illustration

Battery Backup Time Comparison

Estimate backup hours for popular capacities at common load levels. Illustrative; actual runtime varies with inverter efficiency and temperature.

Select Battery:

Assumptions: new batteries at 25°C, inverter efficiency ~85–90%. For accurate sizing, contact SAMCO BATTERY.

Technical Specifications

Choose the right capacity for your inverter and backup requirements.

COSLIGHT SMF Battery Models

Technical specifications of COSLIGHT SMF inverter batteries including dimensions, weight, and terminal details
Model	Capacity (Ah)	Voltage (V)	Length (mm)	Width (mm)	Height (mm)	Weight (kg)	Terminal
1400CT	100	12	532	180	290	46	M6
1800CT	120	12	532	180	290	51	M6
2200CT Recommended	150	12	532	180	290	56	M6
3000CT	200	12	600	185	390	75	M8

Capacity (Ah)

Weight (kg)

Terminal Type

Constant Current Discharge Specifications

Discharge rates at 25°C ambient temperature

Constant current discharge rates by end voltage and discharge duration
End Voltage	Minutes							Hours
End Voltage	5	10	15	30	40	50	60	2	3	4	5	8	10
11.1V	1.86C	1.60C	1.05C	0.71C	0.61C	0.54C	0.50C	0.32C	0.24C	0.19C	0.16C	0.11C	0.09C
10.8V	2.0C	1.68C	1.26C	0.79C	0.67C	0.57C	0.52C	0.32C	0.25C	0.20C	0.16C	0.12C	0.10C
10.5V	2.2C	1.78C	1.40C	0.81C	0.69C	0.60C	0.55C	0.33C	0.26C	0.21C	0.17C	0.12C	0.10C

Note: "C" represents the battery's rated capacity. For example, 0.1C for a 100Ah battery equals 10A discharge current.

Optimization Tips for Indian Conditions

Temperature Management

• Install in well-ventilated areas
• Avoid direct sunlight exposure

Usage Optimization

• Limit discharge to 60% for daily cycling
• Ensure proper charging voltage settings

No Water Needed — COSLIGHT SMF/VRLA Battery maintenance-free design illustration

Frequently Asked Questions

Expert answers to common questions about COSLIGHT VRLA battery and SMF battery technology.

What is the warranty on COSLIGHT VRLA battery models?

COSLIGHT SMF battery models come with 36 months manufacturer warranty for inverter applications and 60 months for solar applications. Complete warranty details are available in our warranty section.

Are you COSLIGHT SMF battery dealer in Delhi, Gurugram, and Noida?

Yes, SAMCO BATTERY is an authorized COSLIGHT battery dealer serving Delhi, Gurugram, Noida, and entire NCR region. As an official COSLIGHT battery authorized dealer India, we provide genuine VRLA battery models with manufacturer warranty and same-day delivery across Delhi NCR. Visit our Gokhale Market store or contact for Pan-India delivery.

What is the best inverter battery for 3BHK home and home office backup?

COSLIGHT 2200CT (150Ah) is the best inverter battery for 3BHK home, providing balanced backup for lights, fans, and TV. For home office backup needs, the 120Ah 1800CT model works well for computer + router setups with 8–12 hour runtime. For current pricing, contact SAMCO BATTERY directly.

Which inverter battery for computer + router backup during power cuts?

For computer + router backup, COSLIGHT 1400CT (100Ah) provides 8–10 hours runtime for typical setups consuming 50–100W. For extended work-from-home requirements, the 120Ah or 150Ah models offer longer backup duration.

Is this indoor safe inverter battery with no fumes?

Yes. COSLIGHT SMF batteries are sealed VRLA designs with no water top-up required. The sealed construction prevents gas emissions and acid spillage, making them safe for installation near living areas.

Contact SAMCO BATTERY for Inverter Battery Price & COSLIGHT Battery Models

Best SMF inverter battery and VRLA battery dealer in Delhi, delivering maintenance free inverter battery Pan-India. Get current TPPL battery pricing and expert guidance.

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