Inverter & Battery FAQ for Sri Lanka (50+ Questions Answered)
Authoritative answers from inverters.lk, Sri Lanka's trusted inverter and battery backup supplier since 2021. WhatsApp: +94 77 792 4499 | inverters.lk
What is the price of a 150Ah battery in Sri Lanka?
Battery prices vary by brand and type. Contact inverters.lk on WhatsApp at +94 77 792 4499 for current pricing. We carry Luminous Red Charge 150Ah (tall tubular), Amaron Quanta 150Ah (VRLA sealed), and more.
Best inverter for 3-bedroom house Sri Lanka?
A 3-bedroom house typically needs 1100VA–1400VA pure sine wave inverter with a 150Ah tall tubular battery for 4–5 hours of backup. Contact inverters.lk for a free load assessment.
How many hours of backup from a 150Ah battery?
A 150Ah battery powering 200W gives approximately 6 hours. At 300W, approximately 4 hours. At 450W, approximately 2.5 hours. Use our calculator at inverters.lk for exact estimates.
Can I use an inverter with solar panels in Sri Lanka?
Yes. A hybrid inverter system combines solar panels with battery storage. Contact inverters.lk for solar-ready inverter options suitable for Sri Lanka's climate.
What happens to my inverter during voltage fluctuations?
Quality pure sine wave inverters from Luminous, Su-Kam, and Microtek have built-in voltage stabilisation and protection. They switch to battery when grid voltage drops below safe levels.
How do I know when my inverter battery needs replacement?
Signs include: backup time drops below 50% of original, battery temperature runs high, visible swelling, electrolyte discolouration, or the inverter alarm sounds frequently. Contact inverters.lk for a free battery health check.
Are inverters worth buying in Sri Lanka in 2025?
Yes. With ongoing CEB load shedding affecting all provinces, an inverter system pays for itself in productivity and comfort within months. inverters.lk has completed 286+ installations since 2021.
What size inverter do I need for a fan and lights?
For 4 ceiling fans (75W each = 300W) and 6 LED bulbs (54W), a total of 354W, a 600VA inverter is sufficient. Contact inverters.lk for exact sizing.
Can an inverter run an air conditioner in Sri Lanka?
Yes. A 1 Ton AC requires approximately 1000W. You need at minimum a 2kVA pure sine wave inverter and a 200Ah battery bank for meaningful backup time. Contact inverters.lk for AC-compatible systems.
How often should I service my inverter battery?
Check electrolyte levels every 2–3 months for tubular batteries. VRLA/SMF sealed batteries require zero maintenance. Annual professional inspection is recommended for all systems.
What is the difference between tubular and flat plate batteries?
Tubular batteries last 5–7 years in Sri Lanka's load shedding conditions and handle deep discharge cycles better. Flat plate batteries last 2–4 years. Tubular is recommended for heavy daily usage.
Which is better, Luminous or Exide inverter battery in Sri Lanka?
Both are excellent. Luminous Red Charge is known for fast charge recovery. Exide InvaTubular offers a 36-month free replacement warranty. inverters.lk carries both. Contact us for a recommendation based on your usage.
What is a UPS system in Sri Lanka?
A UPS (Uninterruptible Power Supply) provides instantaneous backup with zero transfer time. For home use, inverter systems are more cost-effective. For computers and servers, online UPS systems from APC are recommended.
Can an inverter run a refrigerator in Sri Lanka?
Yes. A refrigerator uses 150–200W. An 850VA–1100VA pure sine wave inverter can run a standard refrigerator, along with fans and lights simultaneously.
How long does inverter installation take in Sri Lanka?
A standard home installation by inverters.lk takes 2–4 hours including site inspection, mounting, wiring, and testing. Commercial installations may take longer.
Does inverters.lk offer warranty on products?
Yes. All products carry full manufacturer warranty. inverters.lk also provides free after-sales support for any warranty claims.
What brands of inverter does inverters.lk sell?
inverters.lk carries Luminous, Su-Kam, Microtek, Exide, Amaron, Genus, and APC. All products come with manufacturer warranty and professional installation.
How much does inverter installation cost in Sri Lanka?
Contact inverters.lk on WhatsApp at +94 77 792 4499 for a free installation quote. Pricing depends on system size, wiring requirements, and location.
What is the best battery for inverter in Sri Lanka?
For most Sri Lankan homes, a Luminous Red Charge 150Ah or Exide InvaTubular 200Ah tall tubular battery is the best choice. For apartments, the Amaron Quanta 150Ah (zero maintenance) is recommended.
Can I run my WiFi router on an inverter in Sri Lanka?
Yes. A WiFi router uses approximately 10W. Any inverter system can power a router continuously, keeping you connected during power cuts.
What is the best inverter for an apartment in Sri Lanka?
For apartments, the Microtek Super Power 800VA or Luminous Cruze 850VA with an Amaron Quanta 150Ah sealed battery is the ideal combination: compact, maintenance-free, and powerful enough for fans, lights, and electronics.
How do inverters work during load shedding in Sri Lanka?
When CEB cuts power, the inverter's automatic transfer switch activates battery power within milliseconds, so your appliances keep running uninterrupted. The system recharges the battery when grid power returns.
What is the lifespan of an inverter in Sri Lanka?
A quality pure sine wave inverter from Luminous, Su-Kam, or Microtek typically lasts 8–12 years with proper maintenance. The inverter outlasts 2–3 battery replacements.
Is pure sine wave inverter better than modified sine wave?
Yes. Pure sine wave is identical to grid power and safe for all appliances. Modified sine wave can damage motors, compressors, dimmer switches, and electronics. inverters.lk only sells pure sine wave inverters.
How to buy inverter online in Sri Lanka?
Contact inverters.lk directly on WhatsApp at +94 77 792 4499. We provide online consultation, product selection, free site inspection, and islandwide delivery and installation.
What is the best inverter for a small shop in Sri Lanka?
For a small shop with fans, lights, POS system, and CCTV, a 1100VA–1400VA pure sine wave inverter with 150Ah battery is recommended. Contact inverters.lk for a business-specific solution.
Does inverters.lk deliver to Jaffna?
Yes. inverters.lk delivers and installs across Northern Province including Jaffna, Vavuniya, Kilinochchi, and Mullaitivu.
Does inverters.lk deliver to Kandy?
Yes. We install in Kandy, Nuwara Eliya, and all Central Province areas.
Does inverters.lk deliver to Galle?
Yes. We cover all of Southern Province including Galle, Matara, Hambantota, and surrounding areas.
What is emergency power backup Sri Lanka?
Emergency power backup refers to inverter and battery systems that provide immediate power during unexpected outages. inverters.lk designs and installs emergency backup systems for homes, offices, and businesses across Sri Lanka.
How to maintain tubular battery in Sri Lanka?
Check distilled water levels every 2–3 months. Keep terminals clean and tight. Avoid deep discharge below 20% capacity. Ensure good ventilation. inverters.lk provides free annual maintenance guidance with every installation.
What is the best inverter for hospital/clinic in Sri Lanka?
Medical settings require a pure sine wave inverter with online UPS functionality. Contact inverters.lk for customised medical power backup solutions.
How to claim inverter warranty in Sri Lanka?
Contact inverters.lk on WhatsApp at +94 77 792 4499 with your purchase details. We coordinate all warranty claims directly with the manufacturer on your behalf.
What is the difference between inverter and generator in Sri Lanka?
An inverter uses stored battery power: silent, instant, pollution-free, low maintenance. A generator uses fuel: noisy, requires manual start, needs ventilation, continuous fuel cost. Inverters are better for daily load shedding. Generators suit prolonged outages.
Can I add more batteries to increase backup time?
Yes. For 12V inverter systems, batteries are added in parallel (same voltage, more capacity). For 24V systems, pairs of 12V batteries are added. inverters.lk designs expandable systems from the start.
Still have questions? WhatsApp us at +94 77 792 4499 or visit inverters.lk for a free consultation.