Intriguing Temu light (Patreon)

Temu rechargeable filament light

While quite neat, this light could be looked on as a project for making a better and longer lasting version. It's supplied with a suspiciously low capacity 14500 lithium cell. The number means 14mm diameter and 50.0mm long, and these normally have a capacity of around 750mAh, so the 280mAh measured is well short of the desired capacity. That makes it an easy upgrade to just put in a new cell - preferably one with solder tags, as soldering directly to a lithium cell like this is a bit taboo due to the risk of heat damaging the internal separator. There's also a position inside for an alternative rectangular cell with a rough dimension of 30mm by 40mm by 7mm. If the plastic cell guides are carefully cut out it could be possible to get a bigger cell in, including ones salvaged from disposable vapour devices. It should be viable to get a 1500mAh cell in to get five times the run time. When tested on a bench supply the current was:- 4.2V - high=200mA medium=125mA low=60mA 3.7V - high=150mA medium=93mA low=43mA 3.0V - high=58mA medium=37mA low=17mA Processor cuts off at 2.4V Quite a nice light with potential as the base for a custom project. If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:- https://www.bigclive.com/coffee.htm This also keeps the channel independent of YouTube's algorithm quirks, allowing it to be a bit more dangerous and naughty. #ElectronicsCreators