New frontrunner achieves an overall efficiency of 97 percent. There are significant gaps in warranty conditions.

Donut Lab solid-state battery retest by Finland’s VTT shows capacity rising to 110% at 80C, but weight data is still missing.

Twelve photovoltaic storage systems with capacities of 5 kW or 10 kW were included in the comparison, among them several new products, all of which achieved efficiency class A. A new study – also ...

As of 2025, electric cars are more popular than ever, although overall demand in the U.S. shows signs of decline due to increased pricing and a more diverse variety of accessible hybrid alternatives.

Researchers in Germany have unveiled a low-cost anode that achieved an initial efficiency of 82 percent and could significantly boost the performance of sodium-ion batteries (SIBs). Developed by ...

This is a simple NiCd battery charger powered by solar cells. A solar cell panel or an array of solar cells can charge a battery at more than 80 % efficiency provided the available voltage exceeds the ...

Flagship smartphones differ significantly in their battery capacities and underlying technologies. The Samsung S26 Ultra, iPhone 17 Pro Max, and Google Pixel 10 Pro XL are equipped with batteries in ...