Pure sine wave inverter + LFP battery + MPPT solar controller. One system. ₹26,000. Zero maintenance for 10 years. The lead-acid replacement that finally makes financial sense.
The battery dies — always in May, always during a cut. You call the shop. They send a guy. He hauls out the old box, leaves a trail of acid on your floor, and installs a new one. You put it out of your mind.
Until the next time.
Monthly distilled water top-ups. Corroded terminals. Chemical smell.
Skymin: Sealed. Zero maintenance. Ever.
Lead-acid lasts 3–4 years. You're on a billing cycle — for your battery.
Skymin: 3,000+ cycles. 8–10 years of daily use.
Budget inverters send choppy power to your appliances. Your fridge runs hotter. Your motor wears faster. You won't notice until it's too late.
Skymin: Pure sine wave. Grid-quality power.
Lead-acid degrades permanently if discharged below 50%. A "150Ah" battery only gives you 75Ah of actual usable power before the lead plates sulfate.
Skymin: 90% Depth of Discharge. You actually get what you pay for.
Most people think they're buying cheap. They're not. They're buying cheap upfront — which is the most expensive kind of cheap there is.
10-Year Costs
10-Year Costs
You save ₹50,000 over 10 years.
That's not marketing. That's subtraction.
Numbers assume current battery pricing. Actual savings increase as lead-acid prices rise.
"But ₹26,000 upfront feels steep."
It is. We'll be honest. But you're not paying ₹26,000 for a battery — you're paying ₹26,000 to never buy another battery again. That's a different purchase.
The AKINO ATPL12100LH — a complete inverter system with the MPPT solar controller already built in. Not an add-on. Not an upgrade. Standard.
The safest lithium chemistry. No acid, no explosive gas, no thermal runaway. Cleared for indoor installation.
Grid-quality power for every appliance. Your fridge, your AC, your laptop — none of them know the grid is out.
When you're ready to add solar panels, you plug them in. No new hardware. No compatibility questions.
The battery monitors and protects itself from overcharge, over-discharge, and short circuits. Set it up once, forget it exists.
Short power cuts? You still get full backup. Two hours of grid charges the battery meaningfully. Lead-acid can't say that.
It replaces your old inverter and battery setup entirely. Same plug, same connections. We deliver and install it directly at your doorstep in Chennai.
Three buyer types. One system. Pick the path that fits your situation.
You've replaced your lead-acid at least once. You want zero maintenance, lower lifetime costs, and to never call a battery shop again.
₹26,000
Installed. 7-year warranty. Chennai delivery.
Replace My Setup →You have roof or balcony access. You remember Cyclone Michaung. You don't want to ration phone charge on day three.
₹26,000 + panel
Panel pricing varies by roof/balcony setup. Get a quote.
Build My Storm System →You're paying ₹6–11/unit. Your slab is punishing. You want the expensive units replaced first by solar, automatically.
₹26,000 + panel
Off-grid setup. No DISCOM approval. No paperwork. No inspector.
Calculate My Bill Savings →Most Chennai apartments have a south or west-facing balcony that gets 4–5 hours of direct sun. That's enough for a 500W panel to generate 1.5–2.5 units a day — straight into your AKINO system.
No DISCOM approval. No net metering application. No inspector visit. No subsidy paperwork. An off-grid system connects panel to battery to home, and TANGEDCO has nothing to do with it.
You can set this up in an afternoon.
Even overcast Chennai skies generate 100–200W of input. Your battery recharges while your neighbours wait.
~2 units/day offset from your expensive slab. At ₹8/unit, that's ₹5,840/year. Payback in under 3 years.
Yes. The MPPT controller is built in, but using solar is completely optional. Most of our customers buy this purely as a lead-acid replacement. Solar is there when you're ready. There's no obligation.
That's lithium cobalt oxide — the chemistry in phones and some EV packs. LFP (lithium iron phosphate) is completely different. It's used in commercial EVs specifically because it doesn't catch fire. It's the safest lithium chemistry available.
We provide a 7-year warranty with doorstep service in Chennai. You won't need a local shop. You have us — and a BMS that catches issues before they become problems.
The 1.28kWh AKINO system handles lights, fans, routers, TVs, and refrigerators comfortably. Running a 1.5-ton AC continuously requires a larger system. WhatsApp us your load list — we'll recommend the right configuration and be honest if this isn't the fit.
For a straight replacement (same inverter, new battery): no. It's a direct swap. For panel installation we recommend a professional, and we can arrange that as part of the package.
LiFePO4 · 3,000+ Cycles · Smart BMS
Trusted inverter chemistry. Not new, not experimental — the same cells in commercial electric vehicles.
Chennai-based · D2C pricing
No middlemen, no markup chain. You buy directly. We deliver, install, and support.
Doorstep service in Chennai
If something's wrong, we fix it. No shop visits. No third parties. Just call us.
Chennai summers demand reliable backup. Why worry about your old lead-acid battery failing when you can upgrade to a system designed to last a decade?
You can keep replacing it the old way — ₹14,000 every three years — or
you can make the smart choice and make this the last time.
The maths is already done.
Free delivery in Chennai · 7-year warranty · Compatibility confirmed before you pay
Set to ₹0 if you already own an inverter.
Lead-Acid — 10 Years
Skymin System
You Save
Over 10 years. That's not marketing. That's subtraction.
At these inputs, switching breaks even in years.
Check your TANGEDCO bill or use the slab guide below.
Estimated avg for Chennai, 500W panel, 4hr peak sun. Adjust if you have a different panel size.
Daily Savings
Monthly Savings
Annual Savings
Payback Period
Bill Reduction
Savings After Payback
| Monthly Usage | Rate |
|---|---|
| 0–100 units | ₹0 (free) |
| 101–200 units | ₹1.50/unit |
| 201–500 units | ₹3.00/unit |
| 501–1000 units | ₹5.00/unit |
| 1000+ units | ₹7.00/unit |
Solar offsets from your highest slab first. If your bill is large, solar savings are calculated at the most expensive rate you're paying.