Power Station
What is a power station?
A power station – often also called a mobile power station, portable power storage or battery-powered emergency generator – is a compact, rechargeable energy storage device. It combines a powerful lithium battery with an inverter, several ports and intelligent control electronics. The result: 230 V household electricity, 12 V DC and USB charging ports – anywhere and completely emission-free. Unlike conventional petrol or diesel generators, power stations run almost silently, need no fuel and can even be used in enclosed spaces. Whether camping, in the garden, on a boat or as an emergency power reserve at home – a power station replaces conventional power sources and offers maximum flexibility in everyday life.
The market for mobile battery stations is growing rapidly and the technology is constantly evolving. High-quality models today rely on LiFePO₄ battery cells (lithium iron phosphate) with several thousand charge cycles, pure sine wave inverters for sensitive electronics and a wide range of charging options via solar panel, car battery or mains socket. When choosing, the storage capacity in watt-hours (Wh), the continuous output in watts (W) and the number of ports that can be used simultaneously play a particularly decisive role.
Why a power station? Advantages of a mobile energy solution
Petrol generators are loud, heavy, stink and may only be run outdoors because of the CO hazard. A quiet lithium power station, by contrast, delivers clean electricity anywhere, even in the living room. The advantages of modern power storage at a glance:
- Emission-free and quiet: No exhaust fumes, hardly any operating noise – ideal for campsites, national parks or residential areas.
- Immediate use: Simply switch on, plug in the device – no starting problems, oil changes or maintenance.
- Versatile charging options: Charging via the mains socket (AC), the car's 12 V electrical system (DC) or with optional solar panels.
- High-quality battery technology: Modern LiFePO₄ cells achieve 2,000 to 5,000 full cycles while still retaining 80 % of their capacity, making them reliable companions for years.
- Intelligent displays and protective functions: LCD displays show the state of charge, consumption and charging time; integrated BMS systems protect against overcharging, deep discharge and short circuits.
- Compact and portable: Even powerful 1,000 Wh models often weigh under 13 kg and are easy to transport thanks to a sturdy handle.
Anyone who combines such a power station with a powerful solar panel operates a genuinely self-sufficient power plant – usable practically without limit as long as the sun shines.
Key technical figures for a power station
To find the right power station for your needs, you need to understand a few technical figures. We explain the most relevant ones:
Capacity: watt-hours (Wh) and amp-hours (Ah)
The rated capacity is given in watt-hours (Wh) and determines how much energy the power station can store at most. A 500 Wh station, for example, can run a 50 W consumer for around 10 hours (500 Wh ÷ 50 W = 10 h). Product descriptions also frequently mention amp-hours (Ah), usually based on the internal battery voltage of 12.8 V (LiFePO₄) or 11.1 V (Li-ion). Conversion: Wh = Ah × rated voltage. A 40 Ah power station at 12.8 V therefore has 512 Wh. Typical capacities range from 300 Wh for short trips to 2,000 Wh for several days of self-sufficient use. For long excursions or as a permanent emergency power reserve, models with 2,400 Wh and more are available.
Output power and inverter
The continuous output power at the 230 V inverter determines which devices can be operated safely. A power station with 600 W can easily run laptops, LED lamps, small refrigerators or tools. Powerful 2,000 W models even supply large coffee machines, household refrigeration appliances with inrush current or several emergency power consumers in parallel. Pay attention to the peak load rating, which can briefly deliver a multiple of the rated power, for example to bridge the start-up behaviour of compressors.
Connections and charging options
A high-quality power station offers a wide range of outputs:
- 1–2× 230 V Schuko socket (pure sine wave, for sensitive electronics)
- Several USB-A and USB-C PD (Power Delivery) with up to 100 W for smartphones and laptops
- 12 V vehicle connection (cigarette lighter) or Anderson connection for cool boxes
- DC5521 / DC5525 outputs for special devices
Recharging is done via the integrated AC charging input (e.g. 400 W max. charging power), via the DC vehicle connection (e.g. 120 W) or via solar panel (MPPT controller with typical charging powers from 200 W to 400 W). A good model also allows pass-through charging: you can charge the power station and operate devices at the same time. A full AC charge of a 1000 Wh model takes around 5–8 hours depending on the charger.
Uses for mobile power stations
Camping and outdoor
No searching for a pitch with a power supply: with a power station you can run a cool box, camping shower, lighting, laptop and phone charging independently. The portability and quiet operation improve every outdoor experience. A 500 Wh model is enough for a long weekend with moderate consumption; campers with high energy needs or longer stays choose 1,000–2,000 Wh. Supplementary solar modules even make the power station grid-independent for days. If you are travelling by vehicle, you should also think about safety: check the tyre pressure of your tyres with suitable TPMS sensors so that you arrive safely.
Emergency power supply at home
During a power cut, a mobile power station keeps refrigerators and freezers, heating pumps or medical devices (CPAP) running. A 1,500–2,000 Wh station can supply a refrigerator for several hours, and smaller consumers for even a whole day. As no exhaust gases are produced, operation in the home is safe. Many users keep a power station as a silent emergency reserve in the cellar or garage. Compared with large backup batteries (home storage systems), mobile devices score with their immediate readiness for use and flexibility.
Leisure and mobile working
Whether on a building site, at a festival, on a boat trip or in an allotment – wherever no socket is within reach, the power station steps in. It supplies electric cool boxes, PA systems, projectors or chargers. Mobile workplaces in a van benefit from the combination of compactness and enough power for many hours of notebook and monitor use. Fast recharging on the move via the car alternator or a folding solar panel ensures permanent readiness for use.
LiFePO₄ vs. other battery types in power stations
The battery type determines the service life, safety and weight of your power station. While earlier devices relied on lithium-ion (NMC) or even lead-acid batteries, the robust lithium iron phosphate technology (LiFePO₄) dominates today. Our comparison table:
| Feature | LiFePO₄ (lithium iron phosphate) | Li-ion (NMC) | Lead-acid / AGM |
|---|---|---|---|
| Energy density | approx. 90–120 Wh/kg | 150–220 Wh/kg | 30–50 Wh/kg |
| Cycle life (to 80%) | 2.000–5.000 | 500–800 | 200–400 |
| Depth of discharge (DoD) | 90–100 % | 80–90 % | 50 % (recommended) |
| Temperature behaviour (charging) | 0 °C to 45 °C | 0 °C to 45 °C | -10 °C to 45 °C |
| Safety | very high (no thermal runaway) | good (with intact BMS) | low (gassing, acid) |
| Weight (example 1,000 Wh) | ≈ 9–12 kg | ≈ 7–9 kg | ≈ 25–30 kg |
| Typical price (1,000 Wh) | 800–1.300 € | 700–1.100 € | 300–500 € |
The clear winner for mobile power stations is LiFePO₄: even though the energy density is somewhat lower, the extremely high cycle count, the constant voltage level and the inherent safety are convincing. Practically all current premium models rely on this reliable cell chemistry.
Tips for buying a power station – what you should look out for
The following checklist helps you make the right decision:
- Assess your needs realistically: List your typical consumers – how many watt-hours do you need per day? A simple smartphone (10–15 Wh/day) uses significantly less than a compressor cool box (500–800 Wh/day).
- Plan for at least 20 % reserve: Choose the capacity somewhat larger to avoid depths of discharge above 90 % and to preserve the service life.
- Pure sine wave inverter: Only a pure sine wave reliably ensures trouble-free operation of sensitive electronics such as medical devices, modern televisions or tools with speed control.
- Check pass-through capability: Anyone wanting to use the station permanently as a UPS replacement needs this function.
- Solar charging power: Look for integrated MPPT controllers with at least 200 W charging power if you want to use solar panels.
- Weight and mobility: A 2,000 Wh model quickly weighs 20 kg – large stations should have stable handles, wheels or a trolley system.
- Safety certificates: Trustworthy manufacturers supply devices with CE marking and an integrated battery management system (BMS).
An inexpensive 300 Wh entry-level model is available from around 300 euros, powerful all-rounders with 1,000–1,500 Wh usually cost between 800 and 1,500 euros, while professional solutions with 2,000 Wh and more can cost 2,500 euros and more depending on the equipment.
Frequently asked questions (FAQ)
How long does a 500 Wh power station last at 100 W consumption?
Calculated, about 5 hours (500 Wh ÷ 100 W = 5 h). In practice, the efficiency of the inverter (approx. 85–90 %) results in usable energy of around 425–450 Wh, so you can expect about 4.2–4.5 hours.
Can I use my power station while it is charging?
Yes, with models that have a pass-through function this is no problem. The input and output circuits work independently of each other. Bear in mind, however, that charging and heavy consumption at the same time significantly increases the charging time.
Are power stations suitable for operating CPAP devices?
Yes, provided the CPAP device can be operated on pure sine wave AC. Many modern travel CPAPs accept 230 V. Make sure the power station has a pure sine wave inverter to avoid interference.
How long does it take to charge a power station with a solar panel?
That depends on the panel output. A 200 W panel charges a 1,000 Wh power station under optimal conditions in about 5–6 hours (midday sun, perfect alignment). Plan realistically with an efficiency of 70–80 %.
What is the difference between a power station and a generator?
A generator burns fuel, produces exhaust fumes and noise, must be operated outdoors and requires regular maintenance. A power station stores electricity in a battery, works quietly and emission-free, is low-maintenance and can be used indoors. However, the amount of energy is limited and it must be recharged.
Which power station for a motorhome? How many Wh do I need?
For occasional camping trips with phone and lighting charging, 300–500 Wh is sufficient. If you want to run a compressor cool box and laptop for several days, you should go for 1,000–1,500 Wh. Permanent campers with high comfort requirements opt for 2,000 Wh and more, supplemented by solar panels (at least 200 W).
How do I look after my power station in winter?
Store the power station at temperatures above 0 °C, ideally at 15–20 °C and a charge level of 50–60 %. Avoid prolonged storage when fully discharged and extreme cold, as LiFePO₄ batteries should not be charged below 0 °C (an integrated BMS normally prevents this). Take the device out of the cold vehicle before use and let it reach room temperature.
Can I charge a power station in the car?
Yes, via the 12 V vehicle connection (cigarette lighter). The charging power is limited – usually 100–120 watts. A full charge of a large model can therefore take many hours. Ideal for topping up while driving. A reliable tyre pressure monitoring system such as our TPMS sensors can also help ensure driving safety.
electronicx GmbH – your partner for mobile energy solutions
Our team in Cleebronn (Baden-Württemberg) will be happy to advise you – by phone on +49 7135 7194106 or by email at [email protected]. You can reach us from Monday to Friday.
Deliveries abroad are possible on request, but are subject to a charge.
You are welcome to visit us in Cleebronn – Hindenburgstr. 37A, 74389 Cleebronn.
Managing Director: Andreas Emschanow | VAT ID No.: DE300176428 | HRB 752730 (Stuttgart Local Court).
For your vehicle safety on camping and outdoor trips, we recommend taking a look at our TPMS sensors and tyre pressure sensors – so your tyres are always under control.