Samsung INR21700-50S vs 50G: which cell to choose for your pack
Samsung's two 5000 mAh 21700 cells compared properly. When to pick the 50S (power, 35 A) and when the 50G (energy and cycle life) for your DIY, e-bike or solar build.
Solar energy, self-consumption, technology and practical tips to make the most of your installation.
Samsung's two 5000 mAh 21700 cells compared properly. When to pick the 50S (power, 35 A) and when the 50G (energy and cycle life) for your DIY, e-bike or solar build.
Technical analysis of sodium-ion batteries: abundant materials, up to 20,000 cycles and operational safety. Rigorous comparison with LiFePO4. June 2026.
Practical 2026 guide to choosing a solar battery: capacity (15/30/45/60 kWh), LiFePO4 chemistry, inverter power and when it really pays off. Comparison by consumption profile.
A solar battery in 2026 delivers three stackable income sources: tariff savings, hourly arbitrage and grid services. Real numbers for households and small businesses.
Rigorous analysis of cost per kWh at home with solar panels and LiFePO4 battery. Real ranges 2.3-2.7 c€/kWh depending on use. Case study 5.2 kWp + 30 kWh battery.
The digital battery passport will be mandatory in February 2027 under EU Regulation 2023/1542. What it is, what it requires, who answers (manufacturer or installer) and why your battery should already know its state of health.
Most solar batteries don't need replacing when you think. Real signs, expected lifespan of LiFePO4 vs older chemistries, and the data that tells you whether to swap or keep using your battery.