Test your battery

[Eric GSX1400K3]

Good gear C-Tek

[Andre]

I've used this CTEK charger for many years it has quick connector and is smart charger it'll trickle up and discharge if left on full time so cycling slowly for extended lack of use helps battery health and longevity 👍
My first battery was a Japanese manufactured Yuasa it lasted 10+ years. I don't remember buying any other brand battery. Stick with what you know works over 23 years 🙏

Same CTEK here for many years. 0.8A is what the Dr. ordered for bike batt.
Don't know how long the first batt lasted as PO had put a new one in (DELO from Louis) for the sale. Showed weakness after 2.5 years. Replaced it with YUASA 5 years ago. Got it for 65 € then; DELO cost somewhat over 70€. State of charge shows it at 87% now. Not bad I'd say.