Not all lithium batteries are created equal. Anyone interested in modern energy supply for their RV, solar system, or off-grid application will quickly encounter the terms "lithium-ion" and "LiFePO4" (lithium iron phosphate) . Both technologies belong to the lithium battery family – but their properties differ significantly.
In this guide you will learn which battery is suitable for which application , what makes the new NOVA series from WATTSTUNDE special – and what you should really pay attention to when buying.
Not all lithium is created equal: The differences
| feature | Lithium-ion | LiFePO4 |
|---|---|---|
| Energy density | Higher | Slightly less |
| Cycles | 500–1,000 cycles | 2,000–6,000+ cycles |
| Temperature behavior | Good in cold weather | Robust in heat, needs heating in freezing conditions |
| Security | Thermally unstable | Extremely safe, non-flammable |
| Areas of application | Power stations, mobile devices | Motorhomes, solar storage, self-sufficient systems |
In summary: Anyone who wants to travel safely, with a long lifespan and low maintenance – especially in caravans, garden sheds or with solar storage systems – is much better off with LiFePO4 .
How do I find the right battery?
The right battery depends on your needs. Ask yourself the following questions:
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Which devices do you want to power?
Depending on your power consumption, you'll need different capacities. A 1000W inverter, a refrigerator, or a coffee machine requires significantly more power than just LED lighting. -
How long do you want to be self-sufficient?
Plan for at least a day's supply – better yet, two. This increases your independence in bad weather. -
Where is the battery installed?
Under the seat, in the storage compartment, or in the basement? Not every battery fits everywhere. Our NOVA Base series, for example, fits perfectly under the seat in the Fiat Ducato .
The NOVA series from Solarkontor
NOVA Base
The ideal solution for compact vehicles or moderate applications.- Capacities: 20–200 Ah
- Compact dimensions (e.g., DIN under-seat compatible)
- Up to 3,000 cycles
- Integrated BMS
- 5-year warranty
NOVA Core
For the highest demands – even in freezing conditions and continuous operation.
- Capacities: 100–480 Ah
- Integrated heating mat – rechargeable down to -30 °C
- Up to 6,000 cycles
- Expandable & interconnectable (up to 4 units in parallel/series)
- App-enabled, BMS with Bluetooth
- Up to 7 years warranty
Technical comparison: NOVA Base vs. Core
| feature | NOVA Base | NOVA Core |
|---|---|---|
| capacity | 20–200 Ah | 100–480 Ah |
| heating mat | No | Yes |
| Bluetooth/App | No (partially) | Yes |
| Switchable | Yes | Yes (up to 4x in series/parallel) |
| guarantee | 5 years | Up to 7 years |
| Application | Mobile, compact | Stationary, winterproof, expandable |
And which battery fits my motorhome?
Choosing the right battery depends heavily on the vehicle type, available space, and intended use. Here's an overview of which battery is best suited for your camper, van, or motorhome . Here are the three most important factors to consider:
1. Space question: Where should the battery be installed?
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Under-seat solution (e.g. Fiat Ducato, VW Crafter, Mercedes Sprinter)
The NOVA Base 100Ah, with its compact DIN dimensions, fits perfectly under the driver's seat .
Ideal for anyone who doesn't want to make any extensive modifications.
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Storage box / rear garage / floor compartment
Here you have more flexibility. The NOVA Core 150–200Ah offers more capacity in the same space – perfect for self-sufficient travel with an inverter.
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Multiple batteries in parallel or series?
If you need larger amounts of power (e.g. for air conditioning, induction, continuous 230 V operation), the NOVA Core series can be interconnected (up to 4x) – ideal for large motorhomes or liners.
2. Year-round deployment or short summer tours?
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Only traveling in summer?
The NOVA Base series is perfectly adequate. It is lightweight, compact, and efficient for all common camper applications.
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Traveling year-round or in winter?
Then the NOVA Core with integrated heating mat is the right choice.
It can even be charged at temperatures as low as -30 °C – hardly any other battery in this class can do that.
3. What needs to be supplied?
| consumer | Recommended battery |
|---|---|
| LED, USB, water pump | NOVA Base 100–120Ah |
| Refrigerator, light, inverter (small) | NOVA Base 150Ah or Core 150Ah |
| Coffee machine, induction hob, air conditioning | Core 200Ah+ with 1500–2000W inverter |
| Large power applications + winter operation | Core 300–480Ah (also available as 24V) |
In summary: If you have a compact van or semi-integrated camper , the NOVA Base 100Ah is often ideal – especially due to its under-seat compatibility.
Anyone with high energy demands or who wants to be self-sufficient in winter should opt for the NOVA Core series – it offers maximum safety, durability and performance.
Note regarding our recommendations
The information and product recommendations in this guide are based on general experience gained from practical application, consulting, and product testing. They serve as a guide and initial assessment.
Please note that every vehicle, solar system, and usage situation is unique. Therefore, our information does not constitute a guarantee or binding commitment . Always carefully check the technical requirements of your system or seek individual advice from our team.
Tip: Are you unsure? Our team is familiar with campervans – we'll gladly help you find the right battery for your vehicle type and installation location.
