low capacity
Technical term used in computing and engineering contexts to describe devices, storage, or systems with limited capacity.
This low-capacity battery is intended for small devices.
A low-capacity memory card cannot store high-quality video.
Synonym also meaning 'small capacity', but 低容量 is more common in computing contexts.
Compound of 低 (てい, 'low') and 容量 (ようりょう, 'capacity'). A straightforward technical term with no irregular etymology.