“I found that just keep it on a trickle charge when the mbike isn’t used for lengthy periods.... that makes for a much longer life of the battery.:
i do the same for my lawn tractor and vehicles that i drive infrequently like my lawn-work truck and sports car ... trickle charges are essential for any vehicle not driven often that has a parasitic draw from electronics ...
I’ve been keeping my riding mower battery on a trickle charger. One of those $10 Harbor Freight ones.
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I keep the leads permanently connected to my battery.... and the charger is plugged into a nearby receptacle. Roll into the garage and just plug in... takes all of about 3 seconds. I think I’m on about the 15th year of my battery.