Everything you need to know about lithium batteries for your solar system. Making the best choice for you

Should I choose a lithium battery for my solar array? Lithium batteries are now at the heart of modern solar installations. High-performance, durable and efficient, they are an essential solution for maximising self-consumption.But are they always necessary? And how do you choose the ideal capacity for your needs?In this article, we'll help you find out. High performance: With an efficiency of over 95%, they maximise the energy produced by your solar panels. Exceptional longevity: Up to 7,000 cycles, or 15 to 20 years of use depending on conditions. Fast recharging: They recharge faster, which is ideal for making the most of sunny days. Compact and lightweight: Perfect for installations where space is limited or for mobile applications such as motorhomes. However, their initial cost can be a brake on some budgets. But their longevity and reliability make them a worthwhile long-term investment. What capacity should you choose according to your consumption habits? The choice of battery capacity depends above all on your lifestyle and your energy needs. Here are a few concrete examples to guide you: 1. Teleworkers If you work from home, your energy consumption is mainly during the day (computers, lighting, heating or air conditioning). You use the energy produced by your solar panels directly during the day, which reduces your storage requirements.Recommended capacity: A 3 to 5 kWh battery may be sufficient. 2. Families away during the day In a household where everyone is in the office or at school during the day, consumption tends to be concentrated in the evening (lighting, household appliances, TV). In this case, a larger battery is needed to cover night-time requirements.Recommended capacity: A 5 to 10 kWh battery is ideal. 3. Second homes or nomadic applications For second homes or motorhomes, the priority is often lightweight and modularity. Lithium batteries are perfect for these applications thanks to their compactness.Recommended capacity: Varies according to equipment (2 to 5 kWh for basic needs). Comparison with other technologies Although lead-acid or GEL batteries are cheaper to buy, they have a number of major drawbacks: Limited lifespan (500 to 1500 cycles). Lower energy efficiency (around 80%). They require regular maintenance. If your objective is a long-lasting, high-performance solution, a lithium battery is clearly the best choice. Which battery to choose? The choice of battery depends above all on your habits and priorities (budget, desired range). Here's a quick summary to help you: User profile Recommended capacity Teleworker 3 to 5 kWh Family away during the day 5 to 10 kWh Second home 2 to 5 kWh Do you need personalised advice? Every situation is unique! At Wattuneed, we can help you choose the right equipment for your needs. Discover our solutions: Leapton AL05 battery - Compact and powerful Pylontech US5000 - Reliable and modular Sofar BTS 5K - Flexible and expandable Click here to visit our website !