XTAR VP1 Dual Bay LCD Charger

just a bit of info not saying i can expect to buy for that price :bigsmile:

Every place I’ve seen it for sale is asking $50. My SP2 has still got a job until the VP1 comes down to at least $35.

C’mon, guyz, $20 wholesale… :innocent: This charger meant to be better than SP2 and I didn’t see SP2, after almost 1 year on sale, to cost lower than 25 bucks. Of course we all want the cheapest price, but sometimes it’s impossible. I’d like to thank Jason to share this charger with us :wink: Definitely the lower price will attract more buyers :stuck_out_tongue:

The thing that brought my attention is that batt status. Both batts are at 3.81V but bottom batt status is very different!

I’d like to know how does the charger knows that :open_mouth: And yes, mAh counter would be awesome :stuck_out_tongue: (like LaCrosse BC-700, etc)

The battery gauge is a rolling indicator. While it’s charging, it will fill from left to right with it becoming increasingly more solid (eg. less bars “scrolling”). It does come with the car charger so at least they give us “something” :slight_smile:

Unless you’re wanting to charge NiMhs too, I believe this charger is one of the most versatile on the market.

Jason. I know the diameter is too wide to fit two, but could you check if it can fit a 26650 into just one bay?

You can not use a photo to see the status on, the bars does "run" while charging. The minimum number of bars will be the status, but it will always show something between minimum and 5 bars.

Aaaahhhh, gotcha. Thanks for clarify about those bars, guyz. Much appreciated :slight_smile: :beer:

HKJ, do you have your sample for review already? :stuck_out_tongue:

The added value of the voltage and current (fixed = just replaces positional current selecting switch) display is close to zero and cannot justify the price. Doesn’t provide discharge function, capacity measurement, LiFePo support, USB input/output. I own MAHA, XTAR WP2 II + MP2 but this new VP1 is a kind of Mickey Mouse improvement and I would rather buy a nice hobby charger for the same price.

I’m sure distributors were asked for input. We suggested in this order:

Capacity count (charging)
LiFePO4 or NiMH support
USB output or input

I also have nearly every recent charger under the sun but this is a plus because it’s a step up from the Cottonpickers BUT the same cost Cottonpickers can do NiMH :confused:

Note we suggested a close price point to this contingent upon the features above. Note that at this price it’s still competitive for the voltage readouts (as compared to others like Cottonpickers).

Official info/web and some GIFs showing how the display works: http://www.xtarlight.com/en/05-chanpin/p-001-1.asp?styleid=232

What cottonpickers does Nimh?

Found in a thread in the charger section. Also, seems relatively inexpensive: Page Not Found - Aliexpress.com

Would appreciate your feedback as one of the cell gurus.

Yes, and I have already done a couple of charge cycles. It does a very fine CC/CV charge.

Why have a display without capacity measurement though? SIgh.

Xtar VP1 $49.99
0.25A
0.50A
1.00A
CC/CV
LCD display showing charging current and volt charge progress.

Xtar SP2 $34.99
0.50A
1.00A
2.00A
CC/CV
Led lights showing charging status and charging current indicators.

I’ll wait for HKJ’s review and decide if that LCD display is worth the higher price tag.

If it passes all the tests (I would expect it do, but I need to do some more measurements), then there are two things in favor of it:

The display, the obvious is that it can be used to see the charge state of the battery, but it can also be use to estimate the age of the battery (Not in years, but how word down the battery is).

If you are using 16340 and especially 10440 cells, the 0.25A range is very useful.

Generally I would expect it to be more expensive than the XP2, a custom made LCD display does cost more money than 3 leds.

Why is it that generally, charging a 16340 at 0.25A is preferred over 0.50A, while charging a 14500 at 0.50 is totally acceptable even though they are both 4.2V 750mAh cells?

They are not both 750mAh cells, the 14500 has higher capacity than 14500 cells.

A 16340 is usual between 500 and 600mAh.

A 14500 is usual between 600 and 800mAh.

Okay. Thanks. I was wondering if it was some sort of internal resistance thing that I didn’t understand.