Using the scientific miracle of a small wad of Al foil, I was wanting to charge a 14500 yesterday, too, but stopped when I saw it was charging at close to 2A. Didn’t want to cook it. Laptop port, too, so was hoping it’d be limited to 500mA.
Yes, the low current mode, accessed by holding the side switch, will charge my MP3 player and bluetooth headphones. The display blinks to indicate you are in low current mode.
I just received mine, how do I get it to fast charge the cells at 2 amps? I used a fast car charger, and a fast wall plug. It only said 5.1 volts input
The PB2S will need a USB charger/power adapter that supports QuickCharge 2.0 (QC2.0/QC3.0 or higher) protocol (or I think USB type-C PD2.0). I’m not very certain re the USB-C PD since that seems to function erratically, as per some people’s comments.
Has anyone taken one of these apart? The other xtar chargers I have use screws and this one does not. As long as it is not glued, it will likely pop apart.
This form factor is begging to have a wireless charge receiver wedged in the case below the cells if it will fit.
Yes, I’m on my way. I bought at Fasttech for $ 18.8 with a discount code. I like the versatility, the information display and the support for fast charging and low current charging. Other power banks do not detect low current and turn off. I bought a yellow color.
Just as d_t_a has mentioned, I’ve just bought a PD charger and tried it with the PB2S. It performs pretty erratically I would say. The charging percent is not accurate at all. I’ve been trying to charge 2 batteries at 12 volts, but using pd chargers might not be a good idea in this case. However, some USB-A wall adapter(s) does charge 2 batteries at 12 volts (for example, an adapter that comes with my Nokia 7 Plus), while most QC3 supported wall chargers, I believe, will charge at around 9 volts.
Finally got a new phone for my wife and I, S10+ and love them. The PB2S charges them at 9 volts and 1.4 amps. The Samsung charger works well with the PB2S also.
A caution — I just made my annual check through batteries and power supplies, and found the XTAR PB2S 21700 batteries (bought with the device) completely dead. My various other power supplies seem to have held most of their charge for a year.
I would guess there’s no low voltage protection on the PB2S, and it must use a little power all the time watching for someone to insert a demanding device or press the button to wake up the PB2S.
Could be the batteries just didn’t hold the charge that long, rather than got drained. I’ll store them outside of the device starting now, and will check back next year.