Ronto Battery 5
5 kWh usable · Flats and low usage
- 10-year warranty · 6,000 cycles
- Installation and registration included
- Solar-ready
With your usage you save€310/year
€2,490or €24/month over 120 months
New at Ronto · Home batteries
Charge at night.
Charge at night.
Live by day.
Your battery fills up overnight, when electricity is cheapest, and your home runs on it for the rest of the day. We analyse your bill, find the tariff with the cheapest off-peak price and tell you how much you’ll save based on your real usage.
- Installation and registration included
- Free tariff switch
- 10-year warranty
Is a battery worth it for you?Upload your bill and we’ll tell you, based on your real usage.
We only use your bill to run the numbers.
How it works
From your bill to a home that runs on night-time power
Step 1Upload your bill
We read how much electricity you use and when: off-peak, mid-peak and peak.
Step 2We switch you to a night tariff
We find the tariff with the cheapest off-peak price for your usage. We handle the switch, free of charge.
Step 3We install your battery
A technician installs and registers it. From then on it charges overnight and your home uses it for the rest of the day.
Your analysis
What paying night-time prices would look like for you
What we read from your billExample result
Usage380 kWh/month
Contracted power4.6 kW
Your tariff€0.149/kWh
When you use power
Off-peak 34%Mid-peak 33%Peak 33%
Right now you pay the same at any hour. 66% of your electricity is used during the day and could move to the night.
The tariff with the cheapest nightsCheap off-peak
LN
Night TariffLuz Nocturna (example) · Fixed price for 12 months · No lock-in period
Off-peak00:00–08:00 and weekends€0.065/kWh
Mid-peak08–10, 14–18 and 22–24€0.142/kWh
Peak10–14 and 18–22€0.228/kWh
The battery charges off-peak at €0.065 and saves you paying the peak price of €0.228.
BatteryRonto Battery 10
Today
No changes
€863a year
Average price€0.189/kWh
Yearly saving—
Tariff only
Switch to Night Tariff
€835a year
Average price€0.183/kWh
Yearly saving€28
Tariff + battery
Ronto Battery 10
€414a year
Average price€0.099/kWh
Yearly saving€449
Estimate only: 250 working days with off-peak from 00:00 to 08:00 (weekends are off-peak all day), 90% charging efficiency and approximate taxes. Tariff and battery prices are examples; this prototype doesn’t read your actual bill.
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Ronto batteries
Lithium iron phosphate (LFP), the safest chemistry for the home. Every model comes with a hybrid inverter, so if you add solar panels one day you just plug them in.
Ronto Battery 10
10 kWh usable · Homes of 3–4 people
- 10-year warranty · 6,000 cycles
- Installation and registration included
- Solar-ready
With your usage you save€449/year
€4,190or €39/month over 120 months
Ronto Battery 15
15 kWh usable · Large homes, heat pumps or electric cars
- 10-year warranty · 6,000 cycles
- Installation and registration included
- Solar-ready
With your usage you save€494/year
€5,790or €54/month over 120 months
Free technical visit before installationInstalled in about 3 weeksTrack charge and savings in the app
Frequently asked questions
Do I need solar panels?
No. The battery charges from the grid overnight, during off-peak hours. If you add panels later, the inverter is already prepared and the battery will charge from the sun too.
Will I really pay night-time prices for everything?
Almost everything. The battery loses about 10% when charging and discharging, and if you use more in a day than it holds, you pay the rest at that hour’s price. That’s why we show you how much of your day it covers.
What about weekends?
Saturdays, Sundays and national holidays are off-peak for all 24 hours, so the battery isn’t needed on those days. That’s why we calculate with working days.
Can I lower my contracted power?
Often, yes: the battery covers the spikes, so you can contract less power, which is a fixed saving every month. We check this during the technical visit.
Does it require building work?
No. It mounts on the wall near your fuse box in a single morning. We take care of the paperwork.
Make your home run on night-time power
Upload your bill and in a minute you’ll know whether a battery pays off for you.