30-Min Arrival Guarantee Or It's Free

Inverter Not Giving
Backup?
We Come Home.

Q: Is a CTEK charger suitable for inverter batteries?

Yes. CTEK has a specific deep-cycle / supply mode designed for the tubular and flat-plate inverter batteries used in India. Unlike generic chargers that apply constant high voltage, CTEK's 8-stage algorithm adapts to the battery's state, prevents overcharging, and includes a desulfation phase — which is exactly what most neglected inverter batteries need.

Q: How long does inverter battery charging take?

It depends on the battery's capacity (most home inverters use 100–200 Ah batteries) and its discharge state. A moderately discharged 150 Ah tubular battery typically takes 4–8 hours. Deeply discharged or sulphated batteries can take longer. We test first and give you an accurate estimate.

Q: Can you tell if I need a new inverter battery?

Yes. The Konnwei KW720 tests state-of-health, CCA/capacity, and internal resistance on inverter batteries. We show you the numbers — if the battery is below a usable threshold and recovery isn't viable, we tell you honestly. If it just needs a proper charge or desulfation, we do that and save you the replacement cost.

Nobody wants to haul a heavy inverter battery to a shop — and you shouldn't have to. We service your inverter battery at home across South Delhi: East of Kailash, Nehru Place, Okhla, Lajpat Nagar, South Extension, Greater Kailash, Kalkaji, CR Park, Defence Colony and Saket. CTEK deep-cycle charging, Konnwei KW720 backup test, honest advice.

Book Inverter Service Call 9311211157

30-min or FREE No heavy lifting needed Pay after service

12v PitStop technician servicing home inverter battery in CR Park, South Delhi

INVERTER SERVICE · SOUTH DELHI

What you get

Everything included in your ₹449 inverter battery service.

One flat price. No carrying the battery anywhere. No guesswork on backup hours.

Konnwei KW720 Capacity Test

We measure actual backup capacity, internal resistance, and state-of-health of your inverter battery. This tells you directly — before spending money — how many hours of backup you should realistically expect and whether recovery is needed.

CTEK Deep-Cycle Smart Charge

CTEK's deep-cycle/supply mode applies the correct charge profile for tubular and flat-plate inverter batteries (100–200 Ah). It includes a desulfation stage, which is the most common fix for inverter batteries that have lost backup. Never overcharges — extends battery life.

Desulfation if Needed

Most inverter batteries in Delhi are damaged by sulphation — caused by the generic trickle chargers built into inverter units. CTEK's desulfation mode breaks down these crystals and restores backup capacity that was thought lost.

Post-Charge Verification Test

After charging and desulfation, we re-run the KW720 to show you exactly how much capacity was restored. You know in advance what backup hours to expect — not a guess after the next power cut.

Fully At-Home — Nothing to Carry

Inverter batteries weigh 25–50 kg. You don't lift it. We come to your home in Greater Kailash, CR Park, Defence Colony, Saket, Kalkaji, Lajpat Nagar, South Extension, East of Kailash, Nehru Place, or Okhla and service the battery where it sits.

Honest Replacement Advice

If the battery is genuinely beyond recovery, we show you the KW720 numbers and explain what they mean. We never push replacement unless the data clearly supports it — and we have been doing this honestly since 2014.

Sound familiar?

You need inverter battery service if any of these apply.

Inverter shows "full charge" but the power cuts out within 15–20 minutes — not the 3–4 hours it used to give

Nobody willing to come home and test the inverter battery — everyone just says "replace the battery"

Battery is only 2–3 years old but backup has dropped significantly — sulphation from the inverter's built-in charger is very likely

Battery takes very long to charge but drains quickly — a classic sign of reduced effective capacity

Want to know the real backup hours your battery can deliver before the summer power cuts begin

Mechanic quoted ₹8,000–₹15,000 for a new battery — you want to try recovery first before committing

How it works

From your call to a recovered inverter battery — at home.

Book in 60 seconds

WhatsApp or call with your home address, flat number, and inverter battery brand/model if known. We cover East of Kailash, Nehru Place, Okhla, Lajpat Nagar, South Extension, Greater Kailash I & II, Kalkaji, CR Park, Defence Colony, and Saket.

30-minute arrival or it's free

Technician arrives with CTEK smart charger and Konnwei KW720 tester at your home. If we miss the 30-minute window, the service is entirely free. No argument needed.

Konnwei KW720 diagnosis

We test the battery in place — no disconnecting needed for the test. State-of-health, internal resistance, and capacity are measured and shown to you immediately. This tells us whether it needs a charge, desulfation, or has genuinely failed.

CTEK deep-cycle charge & desulfation

CTEK is connected in deep-cycle mode — designed for the large tubular and flat-plate batteries used in home inverters. The 8-stage algorithm automatically runs desulfation first, then charges fully, then holds the battery at optimal voltage. This takes 4–8 hours for most 100–150 Ah batteries.

Konnwei KW720 post-test

After the session, we test again. You see the internal resistance drop and the capacity recovered — in numbers. This translates to real backup hours you can count on.

Pay and go — or we advise on next steps

Pay ₹449 + GST after the service. If the battery responded well, you're done. If not, we explain the options honestly — and won't charge for a session that didn't work.

Our equipment

Why our tools work on inverter batteries when generic chargers don't.

Deep-Cycle Charger

CTEK Battery Chargers

CTEK includes a dedicated deep-cycle/supply mode that adapts to the higher capacity and different chemistry of tubular inverter batteries. The 8-stage algorithm desulphates, charges, and maintains the battery — exactly what the generic trickle charger inside your inverter unit cannot do.

✓ Deep-cycle mode for inverter batteries · Desulfation built-in · Extends battery life significantly

Battery Tester

Konnwei KW720

The KW720 tests state-of-health, capacity, and internal resistance on deep-cycle inverter batteries — not just standard car batteries. This gives you a real capacity reading in Ah equivalent, so you know exactly what backup hours to expect after the service.

✓ Tests tubular & flat-plate inverter batteries · Before & after comparison · Real capacity numbers

If Car Also Needed

OzCharge RM 1000

If your car battery also needs attention on the same visit, the OzCharge RM 1000 capacitor jump starter handles it — safely, without voltage spikes, in any parking space. No extra call-out fee for combining services.

✓ Spark-free · ECU-safe · Convenient when combining inverter + car battery service

Our technicians

We come to your home. We leave you knowing the truth about your battery.

We have serviced inverter batteries across every neighbourhood in South Delhi — from the high-rises of Greater Kailash to the bungalows of Defence Colony. Our technicians know inverter batteries inside out.

10+ years servicing tubular and flat-plate inverter batteries across Delhi

Understand the difference between inverter charger failure and battery failure — tell you which it is

Will never recommend a new inverter battery without showing you why the numbers justify it

Equipment calibrated and ready before every visit — full CTEK charge maintained for accurate deep-cycle sessions

12v PitStop technician testing home inverter battery in Defence Colony, South Delhi

INVERTER SERVICE · DEFENCE COLONY

Where we come to you

Inverter Service in East of Kailash, Greater Kailash, CR Park, Defence Colony & Lajpat Nagar — all South Delhi.

All areas below are within our 30-minute response zone.

East of Kailash — Primary zone

Nehru Place — Office & residential

Okhla — Industrial & residential

Lajpat Nagar — Residential

South Extension

Greater Kailash I & II

Kalkaji

CR Park — Housing societies

Defence Colony — Bungalows & apartments

Saket

Common questions

Inverter battery FAQs — honest answers.

Why is my inverter not giving backup even though it shows fully charged?

This is almost always a battery problem, not an inverter problem. The most common causes are: sulphation from the inverter's built-in trickle charger; the battery has been overcharged repeatedly and the plates are damaged; or the battery's capacity has genuinely degraded. We test with the Konnwei KW720 to identify the exact cause before recommending any action.

Do you come to my home to service the inverter battery?

Yes — this is entirely a doorstep service. You don't need to disconnect, carry, or transport anything. We come to your home in East of Kailash, Greater Kailash, CR Park, Defence Colony, Kalkaji, Saket, and across South Delhi and service the battery in place.

Is a CTEK charger suitable for inverter batteries?

Yes. CTEK has a dedicated deep-cycle/supply mode designed for tubular and flat-plate inverter batteries. Unlike generic chargers that apply constant high voltage, CTEK's algorithm adapts to the battery's state, prevents overcharging, and includes a desulfation phase — exactly what most neglected inverter batteries need.

How long does inverter battery charging take?

It depends on battery capacity (most home inverters use 100–200 Ah batteries) and discharge state. A moderately discharged 150 Ah tubular battery typically takes 4–8 hours. Deeply discharged or sulphated batteries can take longer. We test first and give you an accurate estimate.

Can you tell if I need a new inverter battery?

Yes. The KW720 tests state-of-health, capacity, and internal resistance on inverter batteries. We show you the numbers — if the battery is below a usable threshold and recovery isn't viable, we tell you honestly. If it just needs a proper charge or desulfation, we do that and save you the replacement cost.

Related services

Other services we offer at your home or car.

Inverter not giving backup?
We'll test and charge it at home in 30 minutes.

East of Kailash · Greater Kailash I & II · CR Park · Defence Colony · Kalkaji · Saket · Lajpat Nagar · South Extension · Nehru Place · Okhla