- Printers that weigh more than 20 kg and are bigger than size 500 x 400 x 200 mm.
- Leaking batteries related to alkaline, button cell, carbon-zinc, and rechargeable batteries
- Power banks that are opened or have battery exposed.
- Android smartphones, Android tablets, desktops, notebooks, and Apple products such as iPhone, iPad, and iMac with a broken screen and without product packaging box
- Desktop monitors bigger than 24-inch screen size (screen can be diagonally measured to determine the size)
- Modems
- Set-up boxes
- Types of products not sold at Challenger.sg like the dryer, TV, washing machine, EMD, refrigerator, batteries for Consumer Electric Vehicle, and air conditioner.
