XTAR PB2S

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TheIntruder
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XTAR PB2S

After a while of hints and teasing, it appears the PB2S has finally been unleashed upon the world.

The first review has appeared in an Italian vaping forum, and seems that XTAR has addressed many of the shortcomings of the original PB2.

It supports larger 21700 cells, higher currents (QC3.0, though PD would have been nice as well), has a cell extraction strap, and a more informative display.

The reviewer says that it can fully charge an iPhone, which the PB2 couldn’t, due to the low current cutoff, but we’ll see, since the 120mA current limit in the specs may suggest otherwise.

A nice upgrade, but I wish it had appeared sooner, since I reluctantly bought PB2 to fulfill a more immediate need, and don’t wish to acquire yet another charger so soon.

Edited by: TheIntruder on 08/15/2019 - 04:44
bmengineer
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My initial impressions of the PB2S are pretty positive.

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Blggg
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How is the powerbank conversion efficiency bmengineer? And can it accommodate some longer unprotected 21700s like Lishen cells?

bmengineer
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Quote:
How is the powerbank conversion efficiency bmengineer?

I got it yesterday, way too soon to say.
Quote:
can it take longer 21700s like Lishen cells?

Max bay length looks like about 72 mm, but I can’t measure it super accurately.

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Blggg
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Thanks a lot, mate.

fran82
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It will be too expensive

Any hint about price?

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CalvinIS
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fran82 wrote:
It will be too expensive Any hint about price?

MSRP $21.90

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bmengineer
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CalvinIS wrote:

fran82 wrote:
It will be too expensive Any hint about price?

MSRP $21.90


That sounds extremely reasonable.

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A_M_K
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Looks good, but I would’ve liked if there was also a micro usb port on board, just for more flexibility.

Otherwise, I’m very glad they’ve fixed the ridiculously high current cutoff issue, which limited the PB2s usefulness for me…

WalkIntoTheLight
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One of the nice things about the original PB2 was that it was such a compact charger/powerbank. What’s the PB2S like in comparision?

bmengineer
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WalkIntoTheLight wrote:
One of the nice things about the original PB2 was that it was such a compact charger/powerbank. What’s the PB2S like in comparision?

Find all my reviews of flashlights and more gear at www.bmengineer.com

fran82
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21.90$ looks ok… But hope a group buy or coupons to get at an even more low price.

About 15-18$ max would be nice

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WalkIntoTheLight
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bmengineer wrote:
WalkIntoTheLight wrote:
One of the nice things about the original PB2 was that it was such a compact charger/powerbank. What’s the PB2S like in comparision?
!{width:100%}https://i.imgur.com/JLoORXM.jpg!



Thanks for the comparison. It’s quite a bit bigger. Not sure if it’s small enough to consider it a travel charger, but if you have to charge 21700’s it still pretty small.

TheIntruder
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bmengineer wrote:
My initial impressions of the PB2S are pretty positive.

Does it have an issue fully charging iPhones?

CalvinIS wrote:
MSRP $21.90

When does it go on sale?

I was told it was ready to be released, and available “soon,” but that was over a month ago.

CalvinIS
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TheIntruder wrote:
CalvinIS wrote:
MSRP $21.90
When does it go on sale? I was told it was ready to be released, and available "soon," but that was over a month ago.

We're waiting for our tracking number to scan in, estimated arrival next week.

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Thanks for posting! This is interesting, and I do like most of Xtars chargers for their typically reliable and proper cc/cv termination. But its also a bit on the largish side. There was some verbiage in the review and product link that has me a bit concerned. It mentioned that when inserting a charged cell and a discharged cell, the charged cell would recharge the discharged cell. Hopefully the cells aren’t arranged in parallel. I would be concerned that the charged cell would directly discharge into the discharged cell without a controlled cc/cv method. Its unlikely and would be potentially dangerous, but probably worth testing just to make sure.

Hopefully Xtar has a copy in its way to HKJ for detailed analysis.

Xtar product link:
http://www.xtar.cc/product/XTAR-PB2-Charger-1.html

Google translate to English of Italian review:
https://translate.google.com/translate?sl=auto&tl=en&u=https%3A%2F%2Fwww...

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CC/CV – this is the simplest charge algorithm. The nickel charge algorithm with catching delta is much more complicated.

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FlashPilot wrote:
There was some verbiage in the review and product link that has me a bit concerned. It mentioned that when inserting a charged cell and a discharged cell, the charged cell would recharge the discharged cell.

Where did you see any comments to that effect?

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okwchin
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I think that was from the planet of the vapes review.

I think it was in regards to charging priority when it is plugged into a power source. So it will charge the more discharged cell first from external power. I don’t think it implied that it was charging from the other cell.

https://www.planetofthevapes.co.uk/forums/product-reviews/misc-reviews/t...

Quote:
Using the PB2S is simplicity itself, pretty much plug & play. Insert the batteries, plug the USB lead into a suitable power supply & the unit checks the batteries. If you charge 2 unpaired batteries the PB2S will start to charge the lower discharged battery first to balance the load.

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Lightbringer
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I just got one, and it’s nice! The “official” link is

http://www.xtar.cc/product/XTAR-PB2S-Charger-122.html

which has anigifs to show how it charges/discharges.

True, it’s bigger’n the PB2, but this donk fits 21700s, too, that’s why.

Hell, today I needed to charge a 26650 (Cometa) and it fit it just fine. Sure, just one cell only, and the cover won’t fit, but to be able to charge even a moose like that in a hurry? I’ll live with “larger”. LOL

And there are 2 separate independent channels, so you can put one nearly-topped-off cell right next to one that’s almost dead, and there’ll be no problem.

The side-button lets you click to see the connection spex, then for battery 1, then again for battery 2.

This is my first XTAR charger, and I’m happy with it.

Oh, and it charged my phone just fine. Dunno about “The IPhone Problem”, but my normal phone worked fine. Was at like 36% or something, topped off, drained the PB2S down to 65% or so. Ymmv, of course.

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TheIntruder
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Lightbringer wrote:
Oh, and it charged my phone just fine. Dunno about “The IPhone Problem”, but my normal phone worked fine. Was at like 36% or something, topped off, drained the PB2S down to 65% or so. Ymmv, of course.

Two fold. Maybe one-and-a-half fold.

1) The PB2’s low current threshold (290mA, according to HKJ) would prevent iPhones from fully charging to 100% before it shut off.

1.5) The USB output coding didn’t correspond to full “fast” (~2A) charging. Of course, iPhones don’t speak QC either, but newer ones do speak PD, so the PB2S appears to address that situation.

I’ll eventually pick up an S after I find a way to pawn off my PB2. I’m a sucker for detailed displays, and am done buying sealed power banks that are effectively trash after their cells expire.

maukka
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TheIntruder wrote:
1) The PB2’s low current threshold (290mA, according to HKJ) would prevent iPhones from fully charging to 100% before it shut off.

Bmengineer tested the PB2S and it cuts off between 20 and 30mA in the normal mode so this is fixed. For even lower charge currents there’s the low power mode.

fran82
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Where is the info about the low power mode?? (Below 30mA)

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maukka
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fran82 wrote:
Where is the info about the low power mode?? (Below 30mA)

In their promo video:
https://www.youtube.com/watch?v=Vqi-1Hj1rR8&feature=youtu.be&t=55

Here it is running for 16.5 hours straight in low power mode with a 10mA load (credit to bmengineer)

CalvinIS
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fran82 wrote:
Where is the info about the low power mode?? (Below 30mA)

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fluke
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What is the standby current?

PB2 was terrible.

bmengineer
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fluke wrote:

What is the standby current?


PB2 was terrible.

Patience, grasshopper.

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fran82
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I am starting to love the PB2S

Hope the price drops

Thanks for showing me the info about the low amps mode. Great!!

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fluke
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bmengineer wrote:
fluke wrote:

What is the standby current?


PB2 was terrible.


Patience, grasshopper.

I walk the rice paper gently.

Klotski
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Lightbringer wrote:
I just got one, and it’s nice! The “official” link is

http://www.xtar.cc/product/XTAR-PB2S-Charger-122.html

which has anigifs to show how it charges/discharges.

True, it’s bigger’n the PB2, but this donk fits 21700s, too, that’s why.

Hell, today I needed to charge a 26650 (Cometa) and it fit it just fine. Sure, just one cell only, and the cover won’t fit, but to be able to charge even a moose like that in a hurry? I’ll live with “larger”. LOL

And there are 2 separate independent channels, so you can put one nearly-topped-off cell right next to one that’s almost dead, and there’ll be no problem.

The side-button lets you click to see the connection spex, then for battery 1, then again for battery 2.

Where did you get yours from? i see

This is my first XTAR charger, and I’m happy with it.

Oh, and it charged my phone just fine. Dunno about “The IPhone Problem”, but my normal phone worked fine. Was at like 36% or something, topped off, drained the PB2S down to 65% or so. Ymmv, of course.

Lightbringer
So where did you get yours? I see Illumination Supply now has them for $17.52

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The XTAR store.

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