Battery Savings Calculator India 2026

Free, instant calculators for every battery decision — EV vs petrol 5-year cost, solar battery payback, home inverter ROI, and e-rickshaw lithium upgrade payback. All numbers calibrated for India 2026 prices and usage patterns.

🚗 EV vs Petrol — 5-Year Cost Comparison

Compare the total cost of owning an electric car vs a petrol car over 5 years, including fuel, servicing, insurance, and battery depreciation.

Daily driving (km) Average Indian urban commute: 30–60 km/day

Petrol price (₹/litre) Mumbai: ₹104 · Delhi: ₹95 · Chennai: ₹101

Petrol car mileage (km/litre) Typical hatchback: 15–20 km/l

Electricity tariff (₹/kWh) Indian residential: ₹5–9/kWh

EV efficiency (km/kWh) Nexon EV: ~7 km/kWh · Punch EV: ~7.5

EV on-road price (₹) Punch EV starts ₹11L · Nexon EV ₹16L

Petrol car on-road price (₹) Comparable segment ICE car

Annual EV servicing (₹) EVs: ₹3,000–8,000/year (no oil change)

Annual petrol car servicing (₹) Typical ICE: ₹12,000–25,000/year

Calculations assume constant fuel price, electricity tariff, and usage. Does not include insurance, depreciation on purchase price difference, EV charging infrastructure cost, or home charger installation (typically ₹8,000–15,000 one-time). EV battery warranty assumed valid for 5-year period.

☀️ Solar Battery Payback Calculator

Calculate how long your solar + battery system takes to pay back in India, accounting for PM Surya Ghar subsidies and grid export credits.

Solar system size (kW) Typical 2BHK home: 3–5 kW

Solar system cost (₹/kW) On-grid 2026: ₹45,000–65,000/kW installed

Battery capacity (kWh) Pair at 20–30% of solar capacity

Battery cost (₹/kWh) LFP 2026: ₹18,000–25,000/kWh installed

Daily solar generation (kWh) India avg: ~4 kWh/kW/day (varies by state)

Grid electricity tariff (₹/kWh) Industrial: ₹6–12 · Residential: ₹5–9

PM Surya Ghar subsidy (₹) Up to 3 kW: ₹30K/kW · 3–10 kW: ₹18K/kW

Annual electricity bill currently (₹) Current annual electricity cost

Calculation assumes 90% solar self-consumption with battery, stable tariffs, and 0.5% annual panel degradation. Does not include net metering credits, maintenance costs (typically ₹2,000–5,000/year), or financing costs. PM Surya Ghar subsidy requires Discom approval and MNRE registration.

🏠 Home Inverter Battery ROI — LFP vs Lead-Acid

Compare the 10-year total cost of LFP lithium inverter batteries versus traditional lead-acid tubular batteries for your home.

LFP battery cost (₹) 1 kWh LFP home battery: ₹15,000–25,000

Lead-acid battery cost (₹) 150Ah tubular: ₹6,500–9,000

LFP battery lifespan (years) LFP: typically 8–12 years at home use

Lead-acid lifespan (years) Tubular: 3–4 years typical in India

Annual LFP maintenance (₹) LFP: zero maintenance

Annual lead-acid maintenance (₹) Distilled water + terminal cleaning: ₹500–1,200/yr

Monthly power cut hours Average Indian town: 20–60 hrs/month

Value of 1 hr backup (₹) Productivity/comfort value of 1 hr backup

Calculations are for a single battery unit. Real systems use multiple batteries in series/parallel. LFP savings are higher in hot climates (India summers reduce lead-acid life further). Does not include inverter cost (same for both options) or electricity cost for recharging.

🛺 E-Rickshaw Lithium Upgrade Payback

Calculate how quickly you recover the extra cost of upgrading from lead-acid to lithium (LFP) batteries in your e-rickshaw.

Lithium battery cost (₹) 60V 80Ah LFP: ₹60,000–80,000

Lead-acid set cost (₹) 4×12V tubular set: ₹15,000–22,000

Daily km driven Commercial operator: 60–120 km/day

Fare per km (₹) Urban e-rickshaw: ₹3–4/km average

Extra range with lithium (km) Lithium gives 20–30 km more per charge cycle

Lithium lifespan (years) Commercial LFP: 4–7 years typical

Lead-acid lifespan (years) Commercial lead-acid: 1–2 years typically

Working days per year Typical commercial operator: 280–310 days

Calculations assume consistent daily usage and stable fares. Extra range savings assume all extra km translate to fares. Does not include cost of lithium-compatible charger (₹3,000–5,000 one-time) or financing. Lead-acid maintenance cost savings estimated at ₹800–1,200/year.

📚 Related Price Guides

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EV Car Battery Prices

Nexon ₹5.5L · Creta ₹7L · BYD ₹15–18L

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Solar Battery Prices

Loom Solar 5kWh ₹99K · 261kWh ₹60L

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Home Inverter Prices

Livguard · Luminous · Exide LFP systems

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E-Rickshaw Prices

48V–72V LFP: ₹35,000–1,00,000

Calculator results are estimates for indicative purposes only and should not be taken as financial or investment advice. Actual savings depend on usage patterns, price changes, local conditions, and individual circumstances. © 2026 LithiumInverter.in