How Many Solar Batteries Do You Need to  Power Your House Overnight in Pakistan?

How Many Solar Batteries Do You Need to 
Power Your House Overnight in Pakistan? 

Exhausted of load-shedding wasting your nights? Visualize sleeping peacefully with lights, fans, 
and your fridge operating all powered by your solar system. 

However, here is the real question: 

How many solar batteries do you actually need to power your house overnight in Pakistan? 
Allow us to break it down smartly with real numbers, local prices, and practical advice. 

Step 1: Comprehend Your Nighttime Power Consumption 

Before buying batteries, figure out how much electricity your home uses at night.

Here is a brief look at average Pakistani homes: 

Home Type Estimated Monthly Units Nighttime Usage (kWh) Backup Needed 
Small home (2–3 people) 150–200 units 4–6 kWh/night 2–3 batteries 
Medium home (4–6 people) 300–400 units 8–12 kWh/night 3–4 batteries 
Large home (with ACs) 500+ unit’s 15–25 kWh/night 4–6 batteries 
Tip: You can match your exact use on your electricity bill divide the total units by 30 to get daily 
kWh. 

Step 2: Know the Battery Capacity 

Solar batteries are rated in kilowatt-hours (kWh) showing how much energy they can store.

Common battery sizes in Pakistan: 

 150Ah / 12V battery → around 1.8 kWh 
 200Ah / 12V battery → around 2.4 kWh 
 Lithium-ion (5kWh–10kWh) → ideal for full-night backup 
Example: 
If your home uses 10 kWh at night, you will need roughly: 
→ Four 200Ah lead-acid batteries (4 × 2.4 = 9.6 kWh) 
Or 
→ One 10 kWh lithium battery 

Step 3: Consider Battery Efficiency & Safety Margin 

Batteries do not deliver 100% of their capacity. You typically get about 80–90% usable energy, 
depending on the type and age. 
That is why experts always add a 20% safety margin. 
Formula: 
Total battery storage = Nighttime usage × 1.2 
Example: 
If your usage = 10 kWh → 10 × 1.2 = 12 kWh total battery capacity needed 

Step 4: Choose the Right Battery Type (Popular in Pakistan) 

Battery Type Efficiency Lifespan Maintenance Price (Approx.) Best For 
Lead-acid / Tubular 70–80% 3–5 years High Rs. 35,000–70,000 Budget users 
AGM / Gel 80–85% 4–6 years Medium Rs. 60,000–100,000 Moderate users 
Lithium-ion (LiFePO4) 90–95% 10–15 years Very low Rs. 250,000–500,000 Long-term solar 
users 

Top Brands in Pakistan: Inverex, Narada, Phoenix, Tesla Lithium, and Osaka Solar.

Step 5: Cost Estimate for Pakistani Homes

Here is a rough cost idea based on current local prices: 
Setup TypeTotal Battery CapacityApprox. Backup TimeEstimated Cost 
Basic setup (lead-acid) 8–10 kWh 6–8 hours Rs. 250,000–400,000 
Mid-range (gel/tubular) 10–12 kWh 8–10 hours Rs. 400,000–700,000 
Premium (lithium-ion) 12–15 kWh 10–12 hours Rs. 800,000–1,200,000 
These estimates include batteries only  inverter and panels are extra. 
Real-Life Example (For a Medium Pakistani Home) 

Let us say your house uses: 
 3 fans 
 10 LED lights 
 1 refrigerator 
 1 TV and Wi-Fi router 
Total estimated consumption per night = 10–12 kWh 
You will need: 

 4 tubular batteries (200Ah each) for basic backup, or 
 One 10 kWh lithium battery for long-term use 
Result: You can easily power your essentials from 8 PM to 6 AM without touching the grid.

 
Step 6: Tips for Maximum Efficiency 

Turn off high-load appliances (iron, AC, water motor) during night backup 
Keep your batteries in a cool, ventilated area 
Use a smart inverter like Inverex Nitrox or Tesla Solar Hybrid for efficient charge/discharge 
Always overestimate your power need by 10–20% 

Final Thoughts 

Powering your house overnight in Pakistan with solar batteries is not just possible, it is 
becoming essential due to rising electricity prices and load-shedding. 
Start with what you can afford  even a two-battery system can give 4–6 hours of comfort 
and expand later.