I am experiencing some problems regarding battery charging. I hope you could bring up a solution.
The problem is that the battery charging is not performing well.
AirPrime Model: Q2686RD
Firmware: R188.8.131.52108091301.Q2686RD 2216044 080911 13:01
Battery Config (LI-Ion).
The device is always connected to a charger.
We left the device plugged to a charger for 12h, the next day it was uncharged. I don't have any log about what happened. I guess that the first charge was well, after that it started to decrease voltage and it didn't recharge again. Battery Config: 1) AT+WBCM=4,1 2) AT+WBCM=3,1,4200,3400,4700,1438,601,1,2000,0
Again, we left the device turned on during the night, this time we got the logs. The first charge started (+WBCI: 2, <voltage>), when the voltage reaches the maximum (around 4300mV) It started to decrease the voltage (+WBCI:2, <voltage>). Until It reached a voltage of 4050mV, then It showed the +WBCI: 1. (WBCI: 3, <voltage>) the software tried to launch the recharge process (AT+WBCM=1),but the device continued to lose voltage (+WBCI: 2, <voltage>). After that we tried to execute directly some AT commands. AT+WBCM=0 and AT+WBCM=1 to try to reset and to start the charge again. The +WBCI's are OK, but the battery didn't get charged. Battery Config: 1) AT+WBCM=4,1 2) AT+WBCM=3,1,4200,3400,4700,1438,601,1,2000,0
This time, we have turned off the Automatic Charge Resume. The only difference is that we didn't get the +WBCI: 1. Battery Config: 1) AT+WBCM=4,1 2) AT+WBCM=3,1,4200,3400,4700,1438,601,0,2000,0
I have been running tests all the week and this bad performance appeared yesterday, the rest of the time it worked well.
Does anybody have any idea?
Thanks in Advance.