AAA BATTERY NANO
AAA Battery
Nano.
The complete solar backup system for every Bangladesh household. One installation. No fuel. No maintenance. Starting from ৳38,000.
PRICING
One price.
Everything included.
Starting price. Final pricing confirmed at order.
Price range: ৳38,000–44,000 depending on installation complexity.
This price includes:
- ✓ 300W solar panel + mounting hardware
- ✓ 1 kWh LiFePO4 battery unit
- ✓ 500W pure sine wave inverter
- ✓ MPPT charge controller
- ✓ All wiring and DC surge protection
- ✓ Installation (4–6 hours, 2-person crew)
- ✓ System commissioning + handover training
- ✓ 2-year full system warranty
EMI OPTION
৳3,200/month
12-month term. Zero down payment. Via bKash or NBFI partner. Subject to partner approval.
| Monthly cost comparison | Amount |
|---|---|
| AAA Battery Nano EMI | ৳3,200/month |
| Diesel generator (monthly) | ৳4,000–6,000/month |
| IPS battery replacement (annualised) | ৳3,500–4,500/month |
| Candles + phone charging fees | ৳800–1,500/month |
EMI details confirmed during your 48-hour follow-up call.
TECHNICAL SPECIFICATIONS
Full system specifications.
Every component confirmed. Every number exact.
| Component | Specification |
|---|---|
| Solar Panel | 300W Monocrystalline PERC, 22% efficiency, 25-year manufacturer warranty |
| Battery | 1 kWh LiFePO4 (Lithium Iron Phosphate — the safest battery chemistry), 51.2V nominal, 16S configuration |
| Inverter | 500W Pure Sine Wave, 220V AC output, THD <3% |
| Charge Controller | MPPT (not PWM — maximises solar harvest by 15–30%) |
| DC Output | 12V native output via DC-DC buck regulation stage |
| DC-DC Converter | Integrated 48V→12V regulated output for fans and LED |
| Surge Protection | DC SPD Type 2 (IEC 61643-31, 600V, 40kA) — included as standard |
| USB Output | USB-C 60W PD3.0 + USB-A Quick Charge 3.0 |
| Battery Cycles | 3,000+ cycles (IEC 61960 rated at 25°C, 0.5C) |
| Field Service Life | 5–10 years depending on installation conditions |
| Operating Temperature | -20°C to 60°C |
| Warranty | 2-year full system warranty |
| Installation | 4–6 hours, 2-person crew |
| Lightning Protection | DC SPD included as standard |
RUNTIME SCENARIOS
What It Runs Tonight.
Pre-calculated, honest runtimes for real Bangladesh households.
APPLIANCES RUNNING
Covers a full night's sleep. Every night.
APPLIANCES RUNNING
Children can study through the entire load shedding window. Every evening.
APPLIANCES RUNNING
Honest note: Most homes have AC fans — they work perfectly through our inverter. For maximum runtime, ask about our DC fan upgrade (৳2,500–3,000 per fan, installed).
HONEST LIMITATIONS
What it runs.
What it doesn't.
We tell you this before you buy — not after. This is a trust signal, not an apology.
✓ RUNS PERFECTLY
✗ NEEDS A BIGGER SYSTEM
Need more power? See the Home system → (includes fridge) or Pro → (for AC and heavy loads).
DC-NATIVE ARCHITECTURE
Your fans run directly from the battery.
No conversion loss. The Nano uses a 12V DC output to power fans and LED lights directly from the battery — bypassing the inverter entirely. This is why we last longer than systems that route everything through AC.
Your AC inverter handles TV, laptop, and other AC appliances at 220V. Best of both worlds.
Honest note on fans: Your existing AC ceiling fans work perfectly through our 500W pure sine inverter. The DC fan upgrade (৳2,500–3,000 per fan) gives you 30–40% longer fan runtime. It is optional, never mandatory.
THE CLOUDY DAY QUESTION
Honest answer.
We get asked this every day. Here is the truth.
Sunny day
Panel generates 1,200–1,500 Wh — more than enough to fully recharge the 1kWh battery, even after a full night's use. Surplus energy is absorbed.
Cloudy (not raining)
Panel still generates 200–400 Wh. Partial recharge. If you run the system at 50% capacity, you maintain battery level across the day.
Monsoon grey / light rain
Reduced generation — 80–150 Wh. System charges from the grid whenever power is available, which in most areas is 6–14 hours per day even during load shedding.
Heavy rain
Minimal solar generation. Grid charging takes over. This is why the system includes MPPT (not PWM) — to squeeze maximum generation from any available light.
Grid backup charging
When the grid is on, the system charges from the grid at full speed. This is not a weakness — it is a feature. You always have a charged battery ready for the next outage.
The bottom line: This system is designed for Bangladesh's load shedding pattern — regular and predictable outages, not 7 consecutive completely dark days. It handles the Bangladesh reality precisely.
LIGHTNING PROTECTION
Included as standard.
Because Bangladesh.
Bangladesh has one of the highest lightning strike rates in the world — over 200 lightning strike days per year. An unprotected solar system can be destroyed in one storm.
Every AAA Battery Nano includes a DC Surge Protection Device (SPD) Type 2, rated to IEC 61643-31 standard (600V, 40kA). This is not an optional add-on. It is included because it would be irresponsible not to include it.
INSTALLATION
One day. Done.
4–6 hours. 2-person crew. You hand over nothing but your address.
WARRANTY
2-year full system warranty.
Covers the solar panel, battery, inverter, MPPT controller, and all installed components. If anything fails within 2 years of installation, we fix it — no questions.
Backed by a warranty reserve fund. We maintain what we install.
ANNUAL MAINTENANCE CONTRACT
Less than ৳420/month.
Optional — not mandatory. The AMC extends the life of your system and maintains warranty-level performance.
| Coverage | Basic AMC — ৳5,000/yr |
|---|---|
| Scheduled service visits | 2 visits/year |
| Panel cleaning | ✓ Included |
| BMS diagnostic check | ✓ Included |
| Firmware update | ✓ Included |
| Phone support | ✓ Included |
Most solar systems in Bangladesh go unserviced until they fail. Our AMC exists because we intend to be here when something needs attention.