They have a solid base to stop sinking on soft ground or sand

Comes with 240V AC/DC Adapter

replacement insertion needle and Allen key

They are also not designed for long-term liquid storage

depending on output of USB)

Darche Compact Collapsible Solar Light Product Type_Airconditioning They have a solid baseIlluminate your tent, roof top tent, swag, awning, campsite or pathway with the Compact Solar Light. An ideal application for any outdoor or household use. Use foldable carabineer to hang under the bonnet of your vehicle for unexpected bush mechanics, or from the ceiling of your sleeping area as a night light for reading or changing. FEATURES DUAL LIGHT MODES: Low light is ideal for illuminating internal sleeping areas while reducing shadows visible