XTAR PB2S 18650 Batteries Charger UK USB C Port 18650 Fast Charger Unprected 20700 21700 Battery Charger Two Ports Output Not included Batteries (Black)

Not a lot to say, it works well and feels fairly well made. Display is clear and shows all the information that you need. Also impressive that it will work on only 1 cell.If you run it to zero, your cells will end up at 3.2v, which for an 18650 is not going to kill it too much.

I've brought many chargers, if your after something small and reliable these are great. Charge time is spot on.They don't have all the bells and whistles that some do, only display charge percentage, but that's all I really care about. I have no need to see charge voltage or current.The prongs that the battery ends connect with are short and study, some others I've have had been too long and flimsy.The magnetic cover is great, easily removed and fitted.Only downside, there is no fabric strip to help pull the batteries out. I just turn the charger upside down and tap them out.Overall I brought a second to leave at work.

Tested using two nondescript 18650 3.7V 9.62Wh (2.6mAh) cells, and a TC66 bi-directional (charge and discharge) multimeter on the USB-C connector (with separate micro-USB power supply, to avoid interfering with measurements)https://www.amazon.co.uk/Trigger-Voltmeter-Ammeter-Voltage-multimeter/dp/B07YFY283HI observed charging metrics via USB-C PD Power Delivery at 8-9V 2A max, using a 60W mains (220V AC) charger, as well as from my 26800mAh 45W PD power bank (Anker PowerCore+). The Constant Current and Constant Voltage phases seem correct, with a long "top up" at the tail end of a full recharge (allow lots of time for this phase, even if the built-in display shows 99-100%).As for discharge, I tried a direct USB-A connection to an old iPad Lightening port, pushing 5V 2.1A. Same metrics when using the output USB-C socket, through the multimeter, then via a USB-A adapter. Also tried a USB-C OnePlus 7T smartphone, but due to protocol reasons proper fast charge is not triggered (stays at 5V 2.1V). I do not have devices with QC 3.0 Quick Charge support, so I can't test that.I also tried PD Power Delivery output to my Anker power bank (aforementioned) and it worked ... although after a few seconds the two power banks competed to charge/discharge, as expected due to PD trigger modes. The only other USB-C PD device I could try to charge is a laptop, but this requires 45W+ so pointless exercise here.Personally I would not rely on the built-in volt/amps display for precise measurements, this appears to show approximate values (or perhaps this shows internal values which differ from precise measurements done on the input/output USB-C socket).The unit seems well built, I love the magnetic lid. There was a slightly unpleasant plastic smell which has now started to wear off.A little bit of heat is emitted during use, but nothing concerning. As advised by the manufacturer, I personally always disconnect the cells when not in use (I just place a shim between the positive tabs).The single button is used to toggle "trickle" charge for low power devices. The button also controls the display of cell 1-2 voltage values. This is very handy, but unfortunately only works when charging (not when discharging, or when not connected at all).Overall I would recommend this product, not least because it is quite a unique proposition in the current marketplace (not many alternative products to compare it with ... if any?).

This is great. No more need of those bulky nitecore chargers.This is compact, with a good finish and very quick. The light is not bright enough to disturb a room with lights off. Before I would hate having to carry batteries around to charge, this makes it so much easier.Paired with my Samsung charger, this charges two 18650s really quickly. Now my vape finally has fast charging capabilities too.Only negative is that it always charges batteries to 99%. Could be a battery health longevity thing...dunno. Either way thats such a minute thing.

I really liked this charger. Worked as it should do. I bought it on 16/3/2021. It ceased working yesterday 26/6/2021. This has been looked after, never dropped so I'm at a loss. If you want to waste your money on 3 months of use this is for you. BE AWARE!