I started having this issue with my Roomba 4130. Old battery would showing blinking red light, then green when done. But when I unplugged it, and hit the power button, nothing would happen. Bought a brand new battery, same thing. Finally took a voltmeter to the battery connect terminals on the Roomba (battery removed), connected the wall charger directly to the unit, and the voltage was only 5V. Obviously, this will not charge a 14.4V battery. After some research on the internet, I found a website (not this one) that recommended directly wiring the wall charger tot he battery (this is discussed in another post about 4100 Roomba’s on this site (see pic). Low and behold, it charged! And the Roomba works. From the earlier mentioned website, the author mentioned that it is possible the charging circuits inside the Roomba may have degraded/failed, preventing the Roomba from being able to supply the correct voltage to charge the battery. Roomba will not service this. But curious if anyone here or from ifixit has tried to fix this.
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I started having this issue with my Roomba 4130. Old battery would showing blinking red light, then green when done. But when I unplugged it, and hit the power button, nothing would happen. Bought a brand new battery, same thing. Finally took a voltmeter to the battery connect terminals on the Roomba (battery removed), connected the wall charger directly to the unit, and the voltage was only 5V. Obviously, this will not charge a 14.4V battery. After some research on the internet, I found a website (not this one) that recommended directly wiring the wall charger tot he battery (this is discussed in another post about 4100 Roomba’s on this site (see pic). Low and behold, it charged! And the Roomba works. From the earlier mentioned website, the author mentioned that it is possible the charging circuits inside the Roomba may have degraded/failed, preventing the Roomba from being able to supply the correct voltage to charge the battery. Roomba will not service this. But curious if anyone here or from ifixit has tried to fix this.
I started having this issue with my Roomba 4130. Old battery would showing blinking red light, then green when done. But when I unplugged it, and hit the power button, nothing would happen. Bought a brand new battery, same thing. Finally took a voltmeter to the battery connect terminals on the Roomba (battery removed), connected the wall charger directly to the unit, and the voltage was only 5V. Obviously, this will not charge a 14.4V battery. After some research on the internet, I found a website (not this one) that recommended directly wiring the wall charger tot he battery (this is discussed in another post about 4100 Roomba’s on this site (see pic). Low and behold, it charged! And the Roomba works. From the earlier mentioned website, the author mentioned that it is possible the charging circuits inside the Roomba may have degraded/failed, preventing the Roomba from being able to supply the correct voltage to charge the battery. Roomba will not service this. But curious if anyone here or from ifixit has tried to fix this.
I started having this issue with my Roomba 4130. Old battery would showing blinking red light, then green when done. But when I unplugged it, and hit the power button, nothing would happen. Bought a brand new battery, same thing. Finally took a voltmeter to the battery connect terminals on the Roomba (battery removed), connected the wall charger directly to the unit, and the voltage was only 5V. Obviously, this will not charge a 14.4V battery. After some research on the internet, I found a website (not this one) that recommended directly wiring the wall charger tot he battery (this is discussed in another post about 4100 Roomba’s on this site (see pic). Low and behold, it charged! And the Roomba works. From the earlier mentioned website, the author mentioned that it is possible the charging circuits inside the Roomba may have degraded/failed, preventing the Roomba from being able to supply the correct voltage to charge the battery. Roomba will not service this. But curious if anyone here or from ifixit has tried to fix this.