Review: Sunopux SPX-936D Ni-MH / Ni-Cd Intelligent Charger with LCD & USB/Serial Data Port

Price paid - 24.88$ using BLF coupon code at Fasttech.

Reasons I bought this were that I wanted to have another smart-charger with advanced features such as charging current selection, discharge options, capacity and voltage display and this one seemed like a good charger even tho there are no reviews on this unit in English and those that I read in Chinese said that its lower quality than similarly priced Shan SH-168DLCD.

So why did I pick this one over Shan knowing that its quality might lack? I did so because it comes with USB out that you can use to either power/charge gadgets at 5V or to use included USB-to-Serial cable to dump battery charging information onto your computer, I havent tried these features thoroughly yet, need to download software from Sunopux website, which, just like included manual, is all Chinese and so probably software will be as well :D!

USB-out port

Specs as listed on FT:

Manufacturer:
http://sunopux.com/cn/mz.htm
INPUT TYPE: AC 95V-245V
OUTPUT TYPE: DC 1.2V
PACKAGE CONTENTS: 1 x battery charger, 1 x US plug charging cable, 1 x serial port cable
Dimensions:
DEPTH 30 mm
HEIGHT 125 mm
WIDTH 78 mm
PRODUCT WEIGHT 121 g

Not much of info, as you can see, if you take a look at FT pictures you can see what charging currents it offers for AA and AAA sized batteries and those are:
AA from 500mA up to 1100mA
AAA from 300mA up to 660mA

Now, the real life data and testing!

Charger came in bent retail box, the box is small, slightly larger than the charer itself, I was surprised as to how small and lightweight it is:


However, there was also not that pleasant surprise and that would the state in which the charger arrived - it came with scratched LCD, fingerprint marks on ALL of the positive and negative contacts as well as appeared like has been either used or is dumped overstock which has spent most of its life either out of packaging among other chargers brushing against eachother and leaving scratch marks all over the body or due to lack of proper packaging it got scratched by included power cord(US) and data cable.

Scratched LCD and body, fingerprints on positive contacts(if you can see them in these pics that is)

Fingerprints on contacts, not sure if you can see them well on these pictures but this is best that my camera if capable of, sorry

Also, the plastic silver plate with Sunopux logo that is on top of the charger is not properly attached and is sticking out at one end of the body

Included data cable, looks OK?

Take a look again at this “beauty”, a effing knot keeps this cable from snapping off the connector :smiley:

Its a shame that Fasttech are hiding this from us since data cable is not shown from this angle in their listing :wink:

Manual, comes in Chinese ONLY, I wonder how come Fasttech havent bothered to at least do some simple quick starting guide for this in English

Startup guide:

Well, it took me a minute to figure out how this thing works!
It has 3 buttons, the top one is Mode/OK button and the two bottom ones are Up/Down buttons, as simple as that.

When you plug in the charger it displays LCD test screen with all segments indicated and its also backlit by one white/purplish LED to the right in pictures

Notice that aside from USB out feature as well as mV/Min/mA/mAh it will display names of all modes both in english and chinese.

Next it displays chargers name, model and after that it lists all of its 4 ports

After short startup sequence its ready to do some charging/timer based charging/discharge/refresh/USB out, you have to select which option youd like to use and it will be applied to all 4 ports.

The backlight will turn itself off after 20 seconds in all modes but USB out if there will be no battery in any of its ports inserted, once the battery is inserted or charger set to USB out mode the light will stay on indefinitely.

Default mode is charging at last selected charging current, it will remember last current youve set up and will do so even if charger has been unplugged and without batteries.

User interface:
To set desired charging mode - press MODE selector button and with up/down find the mode you need(charge, timer, discharge, refresh, USB out) and then press MODE button again, then when its done(if you press mode button but dont continue on selecting/approving desired mode or desired charge current/time, charger will automatically select displayed mode/value after 10 seconds and beep) :

-in charge mode select charging current with up/down from 1 to 9, where 1 is 200mA, 2 is 300mA both for AA and AAA sized batteries and so on up to number 6 where AA will get expected 700mA current while AAA will have 660mA because its the maximum this charger will let you charge AAA batteries at.
Continue for AA up to number 10 with 100mA increments, 1100mA is maximum charge current for AA batteries.
All changes are applied to ALL ports regardless if youre using AA or AAA batteries, the only difference being that even tho all ports will show their maximum value-number for charging current, AAA will be charged at 660mA regardless since its maximum current that this charger will allow for AAA’s.
Note that when charging multiple batteries the highest charging current will be lower than 660mA/1100mA

1-2 AA or AAA, 1100 or 660mA
Note: I added 1AAA to 2AA and AA’s dropped to 700mA, AAA was 440mA, I added second AAA and AA’s dropped to 530mA and AAA’s to 330mA, I then removed one AA and AAA’s rised to 440mA and single AA that was left in rised to 700mA.

3-4 AA or AAA, 700-530mA or 430(440)–330mA

Also, charging current are not set in stone in this charger, it doesnt set, for example, 660mA as highest current, it will set somewhere between ~630mA and ~660mA, not likely to reach its maximum rated current, the same goes for 1100mA, on lower currents it will reach or be close to round numbers, ie 200/300/400 etc.

-in timer mode all you can select is hours from 1 to 36, this is how long you will be able to charger batteries, you cant set current, its fixed at around 120mA for AAA and 200mA for AA batteries.
This feature comes in handy to manually do break-in type charging like on MAHA C9000, however C9000 does it more gently, it chargers batteries at 0.1C rather than fixed current, so be cautious and pay attention while charging, this mode probably is not that gentle and good for AAA sized batteries.

-in discharge mode you cant select anything, discharge current is pre-set at 550mA for both AA and AAA sized batteries

-in refresh you also cant change any values, it will do everything autmatically, it starts with either 550mA discharge or charge, I guess its discharge, that would make sense, but the charger doesnt show what exactly is it doing, so my guess is that it starts with discharge. I dont know what kind of charge current it selects for charge during this mode, havent tested it yet, stay tuned for updates.

-in USB out mode it will display only port #4 as active port, Im not sure if it means that it will drain only battery from this port tho

I charged my cell phone for a while, 5000mV, around 240mA charge current, not much, I suspect charging would take a while given that Samsungs charger is 5V, ~1A.

In all modes it will display battery/output voltage in mV, time its been charging or discharging in minutes, charge/discharge current in mA, how much has been charged or discharged in mAh, as well as some numbers that I dont know what they are since there is no abbreviation or symbol next to them, they fluctuate slightly up and down, but not by much.

Port 1 finished charging, port 4 has the highest value and slowly declining, others staying at approximately the same values

You have to cycle through mV/Min/mA/mAh/unlabeled information with up/down keys to see available information for all ports, ie, it displays only one of these parameters for all four ports at the same time, you have to cycle through all parameters manually.

When selected program has been finished, number of port will disappear from screen and battery will go into 20mA trickle charge

Ergonomics and usability:

Buttons are flat, easy to press, without any physical feedback, however, they have audible beep for each press, which is great given lack of physical click on these buttons.

Good part is that you can change modes and charging current/charging time during charging, you dont have to unplug charger from electricity to do so, simply press MODE button and select parametres you need as described above.

You can also choose modes and set values without batteries inserted, this is also, IMO, very good feature of this charger.

Physically its hard to insert AAA batteries and, aside from port #1 in my charger its almost impossible to remove them with bare hands.
You can also accidentally “eject” AA batteries due to shape of charging ports - AAA batteries dont sit flat in ports, their negative ends are slightly ingressed into charger while AA’s stay flat, there is also slight play at the positive end with AA’s, you can push the battery deeper for few mm and then it comes right back, you can also press AA’s bottom slightly into AAA’s cavity, thus rising its positive end, when you try to push the positive end back and also try to play with batteries bottom, thats when AA’s top might slightly “eject” and lose cotact and thus stop charging.

Verdict:

Good mode selection, USB out, USB data logging(not tested yet), ability to change modes and/or charging current and time on the fly

vs

Scratched LCD and body, poor QC, slow charge rate with multiple batteries and crappy battery retention/removal

Makes me happy about buying this over SHAN charger simply because now I know that this charger is not worth its money, avoid, please do so.

I opened up ticket with Fasttech regarding build quality/QC issues, lets see what they answer will be.

Please pardon my formatting, I used simple text editor and its quite primitive and sucky.

If you want to know more, let me know and I will do my best to help you ;)!

Nice review. Thanks for taking the time.

Thanks for the review.

-Garry

Thank you. I believe this is called “taking one for the team”!

I wouldnt be able to sleep at nights knowing somewhere out there is cheap charger with advanced functions that I know nothing about :D!
Now I know all I need about it and can easily say that it is not a charger to pick up if you need one with advanced functions.

The best still remains C9000, buy that one and save your money and time.

Thanks for the review, and taking one for the team! Looks to be a definite pass.

Thanks for the review. I was wondering about these. The unlabeled data could be temperature since the logging includes this info (see geek’s reply here). But if the sensors are near each other it is strange the third reads 14 degrees and 4th significantly warmer at 76.

Does it have security screws? It would be great if you could take pics of the PCB.

Four battery charging slots. That could be useful if you have many gadgets running on batteries.

I’ll take a look on that when I get home!

Temperature you say? Perhaps, but then, as you said, its odd that it started with 85 on 4th slot and was dropping really slowly, I removed batteries before it stopped its descent since I was still testing and making pictures of charger.

I thought that it might show internal resistance or something, but still, that 4th battery showed way more than the rest of them. Its 1st gen AAA Eneloop btw.

Ok, Chloe, pics ready :D!

Some are 800x600, some are in their original size, 3000+ x 4000+

Back plate, held by 4 screws

First thing you see when removing back plate

USB port

Power port

Other side

The reason I wasnt able to remove the front panel completely was that LCD assembly is screwed to the front panel with 4 tiny screws and connected to the mainboard with ribbon cable which has no removable connectors at any end of it, so its impossible, without need to de-solder everything back, to remove front panel.

I dont have special angled screwdriver to remove those screws either, sorry :D!

Thanks for the review! :)

Thanks for the pics!

You could use a Philips bit and some pliers but it’s only the screen.

Unless you will lose your nights sleep over this, Id rather not :D!

BTW, heres 9min long overview of this charger, in Chinese, if anyones interested:

http://sunopux.com/cn/mzvdo.htm

Are you going to try the data logging?

I will, probably this saturday or sunday, Ive downloaded their driver and software, Ive bought(months ago) for such occasion serial-male to USB cable, so I hope to plug serial-female into serial-male and then connect it to PC and hope that it will either work or at least not fry my motherboard on my laptop.

Any last suggestions before I do this, I might, in fact, simply try if my computer will detect charger now and fiddle with logging etc sat/sun?

EDIT: Connected it to my laptop, it recognised unknown device on COM4 and installed it successfully, I then opened Sunopux software, everything that was in Chinese is now “???”, I found how to select port and start logging, but nothing happens, no data appears, I dont know, perhaps it will show the data only when charging/discharging has been finished?

Either way, I tried to click everything in that software, but the best I can get is that it shows that Play button has been engaged, but nothing happens.

That is a shame. Maybe the executable can be edited to change the resource strings. I will try to find a manual.

I found this on Taobao, shows the temperature sensing diodes underneath the cell bay. Looks like yours is the same revision too.

SPX-936C has no beeper or logging:
http://item.taobao.com/item.htm?spm=a230r.1.14.143.dsaO81&id=7374720532&initiative_new=1