Introduction Wanted to start with my level in electronics. I am very beginner hobbyist & the last thing related to electronics I did in college was creating an 12V AC to DC Converter that was 15 years ago. I a Software Engineer by profession.
Problem I have a Ecovacs vacuum cleaner that runs on Lithium-Ion Battery (Li-ion Volts:14.4 Capacity:6400mAh / 92.16Wh). The charging mechanism is not working - robot does not stay on the charger, but if a battery is is charged it works fine, does what it is supposed to do. A fully charged battery works for about 4-5 cycles (about a week).
Solution I wanted to create an external charger for the battery so that I can swap the uncharged battery with a charged one every week or whenever it needed.
Question I wanted to create my own circuit as I wanted also learn/play around with electronics as an hobbyist; the question is where do I start?
Update #2 (Warning) As the suggestion from Cassie Swett, please do not attempt to charge a lithium battery with a homemade charger as it may cause explosion or produce a fire that can't be extinguished