As lithium-ion cells for electric cars, e-bikes and energy storage make inroads into the market, the ability to analyze aging and defective batteries is becoming increasingly important. In cases of damage, such assessments often aim to determine what caused the impairment - improper use, manufacturing defects or design flaws. To conduct these examinations, the Centre for Solar Energy and Hydrogen Research Baden-Württemberg (ZSW) now has a dual-source X-ray scanner that peers deep into batteries' inner workings. It delivers high-definition images to enable nondestructive failure assessment. Europe's renowned battery research institute has again expanded its range of services with this new device.