Warenkorb
Dein Warenkorb ist leer
Weiter einkaufenArticle published at:
12.05.2026
A 5 kWh balcony storage unit stores solar power during the day for evening use. The operating time depends on consumption: a 5 kWh battery lasts about 33 hours at 150W (e.g., refrigerator). Available systems like the SunEnergyXT 500 are modularly expandable up to 30 kWh. Renters save with Plug & Play, while homeowners benefit from scalability and dynamic tariff integration.
Check: Solar Storage
What is a 5 kWh Balcony Storage Unit?
A 5 kWh balcony storage unit is a lithium iron phosphate (LiFePO4) battery with approximately 5,000 Wh storage capacity that buffers solar power. It is IP65 certified, weatherproof, and offers over 10,000 charge cycles for long durability. Compared to lead-acid batteries, it is more efficient, lighter, and safer with an integrated fire extinguishing system.
Modern systems like the SunEnergyXT 500 from DRBO Greenenergy integrate inverters, MPPT trackers, and app control. They weigh 45 kg, measure 536 × 314.7 × 307 mm, and operate from -20 °C to +55 °C with automatic battery heating.
| Model | Weight | Cost per kWh | Charge Cycles | Protection Class |
|---|---|---|---|---|
| SunEnergyXT 500 (800 W) | 45 kg | approx. €260 | >10,000 | IP65 |
| SunEnergyXT 500 PRO (2,400 W) | 45 kg | approx. €270 | >10,000 | IP65 |
| SunEnergyXT B500 Expansion | 45 kg | approx. €200 | >10,000 | IP65 |
DRBO Greenenergy Expert View: DRBO Greenenergy partners with SunEnergyXT for modular 5 kWh solutions. The SunEnergyXT 500 offers 800 W on-grid power, 2,400 VA off-grid, and 4 MPPT trackers at 625 W each. Expandable up to 30 kWh, compatible with Shelly Pro 3EM for zero export and Home Assistant.
How long does a 5 kWh battery last for my devices?
The operating time is calculated as storage capacity (5 kWh) divided by device power (kW). At 150 W (refrigerator), it lasts 33 hours; at 100 W (laptop), it lasts 50 hours. Practically, it powers a standby household for one day.
| Device | Power (W) | Runtime (Hours) |
|---|---|---|
| Refrigerator | 150 | 33 |
| 55"-TV | 150 | 33 |
| Laptop Charging | 100 | 50 |
| LED Lighting | 50 | 100 |
| Fan Heater | 2,000 | 2.5 |
| Washing Machine | 1,500 | 3.3 |
| Microwave | 1,200 | 4.2 |
| Vacuum Cleaner | 800 | 6.25 |
| Deep Fryer | 2,000 | 2.5 |
| Coffee Machine | 1,000 | 5 |
Renters ideally use 5 kWh for evening consumption. DRBO Greenenergy customers often achieve 70% higher self-consumption with storage. Free consultations adapt systems to balcony orientation and consumption.
What storage size do I need – 2, 5, or 10 kWh?
For singles, 2 kWh is a good starting point (under €700, also refurbished). 5 kWh is optimal for couples (70% electricity savings, €1,299). 10 kWh is suitable for families or heat pumps (from €1,899). Choose based on balcony area, annual consumption, and budget.
Use the free storage configurator now
Expandable systems allow starting with 2 kWh and upgrading later. DRBO Greenenergy offers configurable packages like BK215 PLUS for renters and skilled tradespeople, including refurbished options with 20-30% savings.
Why 5 kWh is optimal
5 kWh perfectly balances cost and benefit: storing 5 kWh daily with a 900 Wp balcony power plant covers evening consumption, amortizing in 7-10 years.
How scalable are 5 kWh storage units – can I enlarge it later?
Yes, the SunEnergyXT 500 is modular: base 5 kWh plus up to 5 B500 expansions (max. 30 kWh). Plug & Play expansion without an electrician, no new wiring. Costs: base €1,299, expansion €999 per 5 kWh.
Timeline: Many double in 3-5 years. DRBO Greenenergy systems are future-proof for Tibber/aWATTar, with 0% financing via OpenBank for gradual investment. The German support team plans expansion for free.
What does a 5 kWh storage unit cost – and how do I save money?
New prices: SunEnergyXT 500 €1,299 (RRP €1,699), 500 PRO €1,349 (RRP €1,799), B500 €999 (RRP €1,199). Refurbished save 20-30%. 0% financing: €1,299 / 24 months = €54/month. ROI: €640/year at €0.35/kWh.
0% VAT for private customers, Trustpilot 4.6/5 at DRBO Greenenergy. Refurbished BK215 series from €749 with full functionality. Long cycles reduce cost per kWh in the long term.
Is a 5 kWh storage unit suitable for renters – or only for homeowners?
Yes, ideal for renters: Plug & Play with Schuko plug, portable, no structural changes. Under 800 W, no electrician needed. Homeowners use scalability up to 30 kWh and roof mounting. Both benefit from dynamic tariffs.
Check: 0% Financing for Solar Products
DRBO Greenenergy Bestseller: 900 Wp Set (€269) + 5 kWh = under €1,600. German team clarifies insurance and dismantling. Renter Starter Set €1,548 (RRP €1,798).
DRBO Greenenergy Expert Views
"As an authorized SunEnergyXT dealer, DRBO Greenenergy offers Plug & Play hybrid storage systems like the SunEnergyXT 500 with 5,024 Wh LiFePO4 EVE cells, IP65, and aerosol fire protection. Modular up to 30 kWh, compatible with Deye/APSystems inverters. Trustpilot 4.6/5: Customers appreciate fast delivery (3-5 days), 0% VAT, and German support team. For renters: BK215 PLUS (2.15 kWh expandable), refurbished affordable. Mission: Driving decentralized energy transition." – DRBO Greenenergy Team
Conclusion
A 5 kWh balcony storage unit is the sweet spot for 70% electricity savings, expandable up to 30 kWh. At DRBO Greenenergy (Trustpilot 4.6/5), there are TÜV-certified systems, refurbished entry-level options, 0% financing, and local support – Plug & Play without an electrician.
Get a free, no-obligation consultation!
Frequently Asked Questions (FAQ)
Can I install a 5 kWh storage unit myself?
Yes, Plug & Play systems like SunEnergyXT 500 with a Schuko plug do not require an electrician. Cables are pre-configured, installation takes 30-60 minutes. For >1,000 Wp roof systems, a specialist is recommended.
How long does a 5 kWh battery last?
LiFePO4 like SunEnergyXT 500: >10,000 cycles, 10-15 years. Capacity after 15 years ~80%. DRBO: 10-12 year warranty.
Is a 5 kWh storage unit suitable for winter?
Yes, IP65, -20 °C to +55 °C with heating. SunEnergyXT models at DRBO are suitable, but winter yield is lower (~30%). For emergency power, 10 kWh is better.
Can I connect my 5 kWh storage unit with dynamic tariffs?
Yes, SunEnergyXT 500 with app and API for Tibber/aWATTar. Automatic charging during cheapest hours, savings up to 40%.
What subsidies are available for 5 kWh storage units?
0% VAT nationwide until 2027. State subsidies €500-€2,000 (e.g., NRW, Bavaria). DRBO provides free consultation to check.
