4.2KVA Inverter with Lithium Battery Price in Nigeria (2026)
The system for people who are done with generators. A 4.2kVA inverter with 7.2kWh lithium battery powers your entire 3-bedroom home — fridge, freezer, fans, TVs, home office, kitchen appliances. Here’s what it costs and how to decide between solar and non-solar.
What’s on This Page
- What a 4.2kVA Lithium Inverter System Costs
- What Can a 4.2kVA System Power?
- With Solar vs Without Solar
- Why Lithium Instead of Tubular Batteries?
- Generator vs 4.2kVA System — The Maths
- 4.2kVA vs 2kVA vs 6kVA — Which Size Do You Need?
- Common Questions
- Buy Your 4.2kVA System
What a 4.2kVA Lithium Inverter System Costs in Nigeria
| System | What’s Included | Price |
|---|---|---|
| 4.2KVA + 7.2kWh Lithium Battery (No Solar) | 4.2kVA hybrid inverter + 7.2kWh LiFePO4 battery (2 units) + breaker box/protection fuses | ₦1,750,000 |
| 4.2KVA + 7.2kWh Lithium Battery + Solar Panels | Everything above + 6× 590W solar panels (3,540W) + 15m DC wire | ₦2,450,000 |
These are complete systems. Battery, inverter, protection, solar cable — all included. Installation is separate.
👉 Buy the 4.2kVA System (No Solar) — ₦1,750,000
👉 Buy the 4.2kVA Solar System — ₦2,450,000
What Can a 4.2kVA System Actually Power?
This is where the 4.2kVA separates itself from the smaller 2kVA systems. It handles a full 3-bedroom home without you having to think about what’s turned on.
Running all at the same time:
- Large fridge AND chest freezer (both running 24/7)
- Lights and fans in a 3-bedroom home
- Two small TVs and home theatre
- WiFi router and CCTV cameras (24/7 security)
- Home office — desktop computer, printer, monitor
- Phone and laptop charging for the whole family
Heavy appliances (one at a time alongside everything above):
- Microwave
- Electric kettle
- Blender
- Pressing iron
- Water pump
- Hair dryer and clippers
The 4.2kVA inverter handles about 3,400W continuously. Your typical home load — fridge, freezer, fans, TV, lights, router, CCTV — sits around 600-900W. That leaves massive headroom for kitchen appliances and other heavy loads without tripping.
How Long Does the Battery Last?
With the 7.2kWh LiFePO4 battery (that’s two 3.6kWh units working together):
- Typical home use (fridge, freezer, fans, TV, lights, router): 10-12 hours
- Light use (fans, lights, router, charging): 15+ hours
- Heavy use (add kitchen appliances, water pump, pressing iron in rotation): 6-8 hours
This means if NEPA takes light at 10pm, you wake up at 7am with your fridge still cold, your CCTV still recording, and your fans still spinning. Your neighbors are the ones who had a rough night.
With Solar vs Without Solar
Buy the No-Solar Version (₦1,750,000) if:
- You get 8+ hours of grid power daily (Band A or B)
- Generator replacement is your main goal
- You want to keep the initial cost at ₦1.75M and add solar later
- Your building’s roof can’t take panels right now (renting, flat roof issues, etc.)
The inverter is hybrid — meaning it’s already built to accept solar panels. When you’re ready, just add panels. No equipment replacement needed.
Buy the Solar Version (₦2,450,000) if:
- Grid supply is poor or unreliable (less than 8 hours daily)
- You’re spending ₦80,000+ monthly on generator fuel
- You want full energy independence
- Extended outages (12+ hours) are common in your area
- You want to lock in free power from the sun and stop paying escalating electricity tariffs
Six 590W panels (3,540W total) fully recharge the 7.2kWh battery in about 3-4 hours of good sunlight. Even during rainy season with reduced sun, you’ll get partial charging that extends your backup significantly.
Why Lithium Instead of Tubular Batteries?
The cheapest way to get 7.2kWh with tubular batteries is four 200Ah units. Let’s compare what that actually costs over time.
| 4× Tubular Batteries | 2× 3.6kWh LiFePO4 | |
|---|---|---|
| Usable capacity | ~4.8kWh (50% DoD) | ~6.5kWh (90% DoD) |
| Actual backup time | 6-8 hours | 10-12 hours |
| Lifespan | 18-24 months | 5+ years |
| Replacements over 5 years | 2-3 sets | 0 |
| Battery cost over 5 years | ₦2.4M – ₦4M | ₦0 (already included) |
| Maintenance | Top up water monthly, check acid | None |
| Weight | ~280kg | ~60kg |
| Space needed | A lot | Corner of a room |
So the tubular setup gives you less usable power, needs replacing every 18 months, requires constant maintenance, weighs half a tonne, and costs you ₦2.4M-₦4M in replacements over a decade. The lithium system gives you more usable power, lasts the full decade, weighs 60kg, and costs ₦0 in replacements.
The upfront price difference disappears very quickly when you factor in replacements.
Generator vs 4.2kVA Lithium System — The Maths
If you’re running a generator for 6-8 hours daily:
Annual Generator Costs
- Fuel (6-8 hours/day): ₦3,000-₦5,000/day → ₦90,000-₦150,000/month
- Annual fuel: ₦1,080,000-₦1,800,000
- Servicing and oil: ₦60,000-₦100,000/year
- Repairs: ₦50,000-₦80,000/year
Total annual generator cost: ₦1,190,000 – ₦1,980,000
4.2kVA Lithium System
- One-time cost: ₦1,750,000 (no solar) or ₦2,450,000 (with solar)
- Annual running cost: ₦0 (solar) or your normal grid bill (no-solar)
- Maintenance: ₦0
- Fuel: ₦0
The no-solar system pays for itself in 10-15 months. The solar system in 15-20 months. After that, you’re saving over a million naira every single year.
And that’s just the money. There’s no price tag on sleeping through the night without generator noise, not worrying about fuel theft, not breathing exhaust fumes, and not having your neighbors hate you.
4.2kVA vs 2kVA vs 6kVA — Which Size Do You Need?
| 2kVA / 3.6kWh | 4.2kVA / 7.2kWh | 6kVA / 14.3kWh | |
|---|---|---|---|
| Best for | 2-bedroom flat, essentials only | 3-bedroom home, full household | Large home with AC, commercial |
| Can power AC? | No (not practical) | No (not enough battery for AC) | Yes — 1 1.5HP all night |
| Backup time | 6-8 hours | 10-12 hours | 8-10 hours (with AC) |
| Kitchen appliances | One at a time, carefully | Comfortably, one at a time | Multiple simultaneously |
| Price (no solar) | ₦950,000 | ₦1,750,000 | ₦3,400,000 |
| Price (with solar) | ₦1,450,000 | ₦2,450,000 | ₦4,900,000 |
The 4.2kVA is the sweet spot for most Nigerian families. It handles everything a normal household needs without the premium of a 6kVA system. The only reason to go 6kVA is if you need to run air conditioning — that requires both the larger inverter (for AC startup surge) and the bigger battery (14.3kWh to run AC for hours).
If you’re unsure, WhatsApp us what you want to power and we’ll recommend the right size. No pressure, no upselling.
Common Questions About 4.2kVA Systems
Can I run AC on a 4.2kVA system? The inverter can handle a small 1HP AC startup, but the 7.2kWh battery would drain in about 4-5 hours with AC running — leaving nothing for your other appliances. If AC is a must, go for the 6kVA/14.3kWh system.
Why are there two batteries instead of one? The 7.2kWh capacity comes from two 3.6kWh LiFePO4 batteries connected together.
How fast does it charge? From grid: 5-7 hours for full charge. From solar (6× 590W panels): 3-4 hours in good sunlight.
Is the switchover instant? Yes. Milliseconds. Your laptop doesn’t restart. Your CCTV doesn’t stop recording. Your Zoom call doesn’t drop. This is not a generator that takes 2 minutes to start — it’s instant and silent.
Can I expand the battery later? Yes. You can add more 3.6kWh units to increase backup time. The system is modular.
Do you deliver nationwide? Yes to anywhere in Nigeria.
Do you have payment plans? Yes. We work with financing partners for flexible payments. WhatsApp us to discuss.
Buy Your 4.2kVA Lithium Inverter System
Option 1: Backup Power (No Solar) — ₦1,750,000
Best for: 3-bedroom homes with decent grid power who want to eliminate the generator.
Includes:
- 1× 4.2kVA Hybrid Inverter (solar-ready)
- 2× 3.6kWh LiFePO4 Lithium Batteries (7.2kWh total)
- Breaker box with protection fuses
Option 2: Solar + Backup Power — ₦2,450,000
Best for: Homes with poor grid supply or anyone who wants free power from the sun.
Includes:
- 6× 590W Solar Panels (3,540W total)
- 1× 4.2kVA Hybrid Inverter
- 2× 3.6kWh LiFePO4 Lithium Batteries (7.2kWh total)
- 15m DC wire
- Breaker box with protection fuses
Other System Sizes
| System | Price | Best For |
|---|---|---|
| 2kVA + 3.6kWh (No Solar) | ₦950,000 | Smaller homes, essentials only |
| 2kVA + 3.6kWh + Solar | ₦1,450,000 | Budget solar for 2-bedroom |
| 6kVA + 14.3kWh (No Solar) | ₦3,400,000 | Large homes, AC capability |
| 6kVA + 14.3kWh + Solar | ₦4,900,000 | AC all night, full independence |
Talk to Us
📱 WhatsApp: +234-809-988-9885 📧 Email: sales@lithiumbatteries.com.ng