Electronics lots carry two very different kinds of value. A few high-ticket units, such as TVs, laptops, tablets, gaming hardware and soundbars, make up most of the manifest retail. A long tail of accessories, such as cables, cases, chargers, earbuds and mounts, pads the unit count. The accessories are easy money in a bin or a booth, but your profit or loss on the lot is decided by how many of the big units work.
Testing is the whole game in this category. Liquidation electronics arrive in three states: tested working, untested, and known defective. Most customer-return electronics are untested. Two Bro Sales never handles the goods, so the condition code, the photos and any testing notes on a listing come from the seller. If a listing does not say a unit was tested, treat it as untested and price in the bench time every unit needs: power on, factory reset, accessory check and a cosmetic grade before it can be listed.
Account locks are the hidden defect. A phone or tablet still tied to its previous owner can be unusable even when the hardware is perfect. Apple's support guidance is blunt: do not take ownership of a used iPhone or iPad protected by Activation Lock until it has been removed from the previous owner's account. Google warns that an Android device reset without the owner's account details cannot be used at all after the reset. Count locked units at parts value, never as sellable devices.
Serial and IMEI checks protect you from the worst outcome, which is reselling a device reported lost or stolen. Run phone IMEIs through the CTIA Stolen Phone Checker as you test, and log serial numbers against each unit so you can trace any problem back to the lot it came from. Returned laptops, phones and cameras can also still hold the previous owner's photos and files. Wipe every storage device before resale; NIST SP 800-88 is the standard federal reference for media sanitization.
TVs deserve their own line. A cracked panel usually turns a TV into a parts unit, and panel damage is easy to miss in a boxed pallet photo. Look for crushed corners and punctures on TV boxes, and read the manifest description for size and model so you know what you are paying for before the box is opened.