RaspBerry Pi4 with EP-0136 won't boot

[RafaelMuniz94]

I installed the EP-0136 in my pi 4 and it won't boot if the usb c (on the pi board) isn't connected. Even if I connect it in the usb c in ups board it won't boot. The ACT light still blinking and only stops when the power cable is connected in the pi usb c port.

OAT update done
Batteries fully charged
All GPIO connections are made

Thanks in advance

[hellresistor]

and try click on Yellow button on UPS?

[Pi-Mania]

What does >sudo i2cdetect -y 1 display?

I have spent a week playing around with these boards. Definitely UPDATE, (had lots of issues till i did) and >sudo i2cset -y 1 0x17 25 1 (to set auto start on AC inserted function)

[Lonewalker0007]

I have the same issue. But the when i power the pi via the ups the green light on the pi flashes 2 times. Indicating it cant read the sd card. But at the moment i boot the pi via its own usb C it starts just up.

[hellresistor]

try full charge batterys first

[thomtux]

I have the same problem, the raspberry will not start. I tried 2 Different sets of battery brands and the problem doesn't disappear. I put the batteries in the ups and measured the voltage at pin 1 and pin 6. The value is 5.02 V. For me it says that the batteries are fine. They do not collapse under 5 V, what could be to low for functionallty.
In the end the rpi wont start with this ups, doesn't matter if the batteries are fully loaded and and the ups is swited to a power supply.
Any suggestions?

[ekaftan]

+1 same problem.

I have two boards. One won-t boot any pi.

The second one will boot a 3B but fails installation with Remote Error