Solar garden light chain

Manufacturer: Dehner Gardencenter
Item number: 2956829

Description of failure

#1: Only one LED is still working.

#2: Furthermore, the battery is so weak that the lighting only lasts a few minutes after dark.

Failure investigation

#1: A broken cable is clearly visible. Solder it on, done.

#2: The contacts of the old battery are heavily corroded. As the lamp is used outdoors and renewed corrosion cannot be ruled out, a battery with a soldering tag is installed.