Because turning the Spyder's ignition on (at all) starts up all sorts of electrical loads
THAT THEN continue to RUN and drain power FOR UP TO 30 MINUTES, even just turning the ignition on a few times each winter to release the park brake (without actually starting the engine!) before pushing your Spyder out &/or back can be enough battery drain to drag the voltage down too low; but if you add in the fairly significant power drain imposed on your battery by
actually starting the engine & then not running it at road going revs for
AT LEAST 30 mins each start to replenish the power you just drained out, then yes, what you've been doing is pretty much guaranteed to have been the cause of your drained battery now!! Aaaand, bear in mind that if you are still running the original battery in your 2013 RT (as am I) then it is getting on a bit and so is probably juuust a little tired even under ideal conditions now! So your battery's age might not be helping much either! :lecturef_smilie:
How long it'll take to re-charge depends a lot upon exactly
WHICH trickle charger you've got & what type of batteries it's designed to best suit &/or what charging profile it uses..... but if it's a true 'trickle charger' and not a Smart Charger or battery maintainer, don't ever leave it running & connected to the battery for more than 24 hours in any one hit!! And if the battery starts getting noticeably warm to the touch during any charging session, disconnect it
IMMEDIATELY! You really don't want to risk exploding your battery at all, let alone while it's installed in your Spyder, so unless you are sure about what your doing, it might even be best to get the battery out and get it to someone who can load test it & recharge it properly. :dontknow: Hope you get it all sorted quickly!
Btw, when you park up your Spyder next winter, leave the park brake
OFF (the alarm only goes for 30 seconds or so!) chock the wheels if necessary, then don't turn the ignition on until you need to start it to ryde it next season, simply
PUSH it around if you need to move it without giving it at least 30 mins of road going revs &/or a ryde! And connecting it up to a proper Battery Maintainer for the duration (or at least a few days each month) will probably be a good idea too! Good Luck :thumbup: