#94 another mini ups review
Looking at other mini ups manufactures I decided to give Jiageng a go. The outer plastic enclosure looks very similar to a lot of other generic mini ups devices. I suspect they all originate from the same factory but have slight improvment’s to the actual PCB inside.
Once opened I was greeted with a beautifully soldered matt black PCB with a higher version number than the previous mini ups from Andowl.
The PCB has quality components and no mystery chips. It also has the iconic Wintonic 18650 cells.
2 differences I noticed are that all the LEDs are a dark green color (the Andowl unit had 2 different greens) and the unit powers off automatically at a low voltage so that it doesn’t require a reboot after it runs “flat”.
The unit also has flashing LEDs as apposed to the Andowl’s fading LEDs
Datasheet can be found here.
Andowl artical can be found here.
I can see what looks to be a similar miniUPS on AliExpress for slightly over $21.
Since it is forbidden on my country for an individual to import devices with batteries, I’m hoping that the seller will be able to sell it without batteries for a lower cost.
What do you think of replacing the battery pack with a 4-unit battery holder? That could make swapping out batteries much easier.
Sounds good.
I bought this one https://www.takealot.com/fibre-wifi-router-backup-power-dc-mini-ups-8800mah/PLID71640434
but it keeps switching off when the power comes back on, very annoying. Any idea why or what I can do ot keep it on?
Hi there,
That mini UPS is very different to the one I had a look at.
It has less USB and barrel connectors, It could be switching off because of a setting or from a fault.
Best option would be to return it for a new one if you don’t come right.
Thanks I did. Its also a Jiageng (JG-756), I just wasnt sure if this was a user error – but I guess it should just work.
P.S. cool site, nice projects. Check out the demoscene.
Thanks, will take a look
I bought a new Jiageng mini dc ups 8800mah. Problem is it runs well, but shut down after 8 hours without using it to back up my router. Please advise.
I bought a new Jiageng 8800mah ups. It is working perfectly but shut down after 8- 10 hours without backing up my router
Hi there,
As long as the device is on it will drain the batteries.
There’s a push button to switch the device on/off.
If you can see the charge indicator LEDs and the 9v-12v LED then the device is online.
Try leave the device plugged in to charge fully, If there still is a problem, it could be a faulty unit as it should require very little maintenance.
I leave it on. No power outage and after a couple of hours it switches of automatically.
Sounds like it’s not charging the batteries. It should be connected to mains permanently. I would contact the seller with a fault.
The UPS does not connect the Internet when I have power outage, just the wi-fi lights up. My service provider says that you should help with this.
How do I get this activated?
This type of UPS doesn’t have any internet capability, however it can pass through to a POE device via the LAN cable.
If it’s not powering the WiFi router correctly check the voltage is set to the correct value.
If there’s still issues it may be a faulty device.
Hello, I bought this 8800mah unit. It works but does not switch automatically during Loadshedding. I have to turn it on myself when there’s a power outage. What could be the problem?
If you power on the device while plugged in it should still have power when you unplug the mains cable.
Could be a faulty device, maybe batteries or there’s a problem with the change over circuit.
This might sound like a stupid question, but I really need advice. I bought the Jiageng 10400mAh Model JG759. The USB port charges my phone, but if I connect my router (12V) to the UPS nothing happens.
HI,
You can try change the switch on the back to 12v if you haven’t already tried that.
If it still doesn’t work it could be a fault.
Best is to send it back for a replacement or a refund in that case.
You can also open the device to troubleshoot but this will void the warranty and you will need technical skills..