Charging don't stop

[neresus]

Hello

I don't know what I am doing wrong. I used litokala 18650 batteries and still have 3,7V on them after three days ups still charging.

Raspberry Pi power supply voltage: 5.084 V Current current consumption of Raspberry Pi: 1791.590 mA Current power consumption of Raspberry Pi: 8962.153 mW Batteries Voltage: 3.736 V Battery current (charging), rate: 360.000 mA Current battery power supplement: 1253.659 mW Current processor voltage: 3265 mV Current Raspberry Pi report voltage: 5104 mV Current battery port report voltage: 4211 mV Current charging interface report voltage (Type C): 5010 mV Current charging interface report voltage (Micro USB): 19 mV Currently charging through Type C. Current battery temperature (estimated): 48 degC Full battery voltage: 4292 mV Battery empty voltage: 3791 mV Battery protection voltage: 3700 mV Battery remaining capacity: 92 % Sampling period: 2 Min Current power state: normal Shutdown countdown: 198 sec Automatically turn on when there is external power supply! Restart countdown: 198 sec Accumulated running time: 3125 sec Accumulated charged time: 3136 sec This running time: 748 sec Version number: 10

[peacho10]

Hi, some problem here. The only way to get a good measurement again is: turn off the UPS(and RPI) remove UPS power remove the batteries put the batteries put the power to the UPS and turn the UPS

[mmaga]

I still have the same problem reported by @neresus after the steps suggested by @peacho10 :-/

[neresus]

Problem is that device have full battery voltage 100mA higher than maximum of full voltage on batteries I don't know why.. After two complete cycles charging and discharging my ups still charge batteries and shows 99% of capacity.

[mmaga]

Problem is that device have full battery voltage 100mA higher than maximum of full voltage on batteries I don't know why.. After two complete cycles charging and discharging my ups still charge batteries and shows 99% of capacity.

@neresus , my batteries are 4.2V I'm feeding with info I got from the UPS Plus script: Batteries Voltage: 4.216 V Full battery voltage: 4293 mV

[stuuno]

I think I may have the same issue as above.

I have tried a couple of different batteries, have done the firmware update, reset to factory defaults, tried different chargers and tried setting the parameters manually. Still the UPS does not charge to 100%, https://api.52pi.com/ says "It seems that your battery is still not fully charged."

The batteries I would like to be using are used LGDAME11865 (https://secondlifestorage.com/index.php?threads/lg-lgdame11865-cell-specifications.8332/)

Output from upsPlus_iot.py 'PiVccVolt': 4.98, 'PiIddAmps': 929.8570227081581, 'BatVccVolt': 0.0, 'BatIddAmps': 98.04878048780488, 'McuVccVolt': 3259, 'BatPinCVolt': 4237, 'ChargeTypeCVolt': 8929, 'ChargeMicroVolt': 44, 'BatTemperature': 41, 'BatFullVolt': 4295, 'BatEmptyVolt': 3700, 'BatProtectVolt': 3700, 'SampleTime': 2, 'AutoPowerOn': 1, 'OnlineTime': 157944, 'FullTime': 158232, 'OneshotTime': 5175, 'Version': 10,

Watching this thread with interest.

[ArjenR49]

With f/w v.10: Reset UPS to factory defaults by writing 1 to register 0x1B. No need to do anything else like taking the batteries out. (see script reset2FactoryDefaults.py at https://github.com/ArjenR49/UPS-Plus or use the appropriate i2cset command; the f/w will set the register back to 0 automatically) You could set the protection voltage as low as 3000 mV (setProtectionVoltage.py at https://github.com/ArjenR49/UPS-Plus) before the next step. Have a UPS control script running, like fanShutDownUps.py by frtz13. Disconnect AC and run the batteries down and then recharge them (in the UPS) at least once to make the UPS learn the low and the high voltage limit. Use a good quality charging cable and a good quality PD charger. It will deliver 9 V to the UPS and more than 3 A charging current to the batteries when they're empty. Eventually the charge % will become 99 and even the last blue LED will stop blinking.

[neresus]

I have 65W usb-c charger. Second day of charging 8,682V 0,2A... still not charged :(

[toruvinn]

Unfortunately I, like many people here, have the exact same problem. I'm not sure what's up with the UPS, but it never stops charging, despite reaching 4.2V on the battery already. It won't go higher, of course.

$ upsPlus_iot.py 
{
  "PiVccVolt": 5.148,
  "PiIddAmps": 984.861227922624,
  "BatVccVolt": 4.204,
  "BatIddAmps": 80.0,
  "McuVccVolt": 3290,
  "BatPinCVolt": 4198,
  "ChargeTypeCVolt": 9081,
  "ChargeMicroVolt": 64,
  "BatTemperature": 40,
  "BatFullVolt": 4000,
  "BatEmptyVolt": 3600,
  "BatProtectVolt": 3700,
  "SampleTime": 2,
  "AutoPowerOn": 1,
  "OnlineTime": 161237,
  "FullTime": 161237,
  "OneshotTime": 161237,
  "Version": 10
}

You can even see I've set:

  "BatFullVolt": 4000,
  "BatEmptyVolt": 3600,
  "BatProtectVolt": 3700,

But unfortunately the UPS seems to ignore it? How do those settings work? Oh and of course I've done bus.write_byte_data(DEVICE_ADDR, 42, 1):

FixedVbat register is: 1
Full Voltage register is: 4000
Empty Voltage register is: 3600

Could someone please explain how do those settings work? Firmware version is 10, as stated above. I would really wish to set the max voltage to some arbitrary number, to prolong the battery life (not to mention, I really want the UPS to stop constantly charging them when they are full already), probably at around 60-70% capacity, that's more than enough for my use case.

I've also tried two different battery types, they are both 4.2V.

Raspberry Pi power supply voltage: 5.140 V
Current current consumption of Raspberry Pi: 953.070 mA
Current power consumption of Raspberry Pi: 4911.690 mW
Batteries Voltage: 4.204 V
Battery current (charging), rate: 100.000 mA
Current battery power supplement: 336.585 mW
Current processor voltage: 3292 mV
Current Raspberry Pi report voltage: 5186 mV
Current battery port report voltage: 4199 mV
Current charging interface report voltage (Type C): 9068 mV
Current charging interface report voltage (Micro USB): 57 mV
Currently charging through Type C.
Current battery temperature (estimated): 41 degC
Full battery voltage: 4000 mV
Battery empty voltage: 3600 mV
Battery protection voltage: 3700 mV
Battery remaining capacity: 95 %

Makes me wonder what the "remaining capacity" is given that current bat voltage is above "max voltage" reported by Full-featured-demo-code.py as above...

Is there a firmware version that actually honours the max voltage setting?

Thank you.

[neresus]

Hello. Is someone who haven't this issue and charging stops? Can you write here your batteries manufacturer and type?

[anomaly256]

Currently on firmware version 14, seeing this issue as well. Charging never stops, I suspect because the batteries aren't isolated once full and continue to contribute something to powering the pi. As such the UPS is showing a charging current of like 40 mah. Is this going to damage the batteries? Or is this current low enough to be irrelevant for the battery lifespan?

[jens-roth]

Hello. I'm using two different UPS Plus EP-1036 (rev. 5.4 2020-01-05 PCB03a) and (rev. 5.0 2020/12/23 PCB01b) both on Firmware v14. Because I can not revert to Firmware v10. OTA_firmware_upgrade.py failed to download any other Firmware version ("File not found"). I tried to set the battery full voltage to 4100mV to prevent from constantly overloading the lipo cells. This did not work. It's constantly charging the cells over 4200 mV. So I'm realley concerned to use it 24/7. I would like to know, if the setting of batt full voltage is controlling the charge settings in any way. I understand, that setting the full voltage higher than 4200mV for lipo cells could be really dangerous. But I want to set it lower for safety reasons.