Will be interested to see how you get on with it, keep us posted . Do you have a link to the battery ?
2000 cycles is good, my gasgas Ebike battery is rated for 1000. However each time it is charged , even if it is from ,say, 90% to 100% counts as a charge cycle, so you have a max of 2000 rides even if the temp is good, even popping to the shop for milk will count as a cycle ?
Gasgas recommends to allow the battery to drop to 10% then charge to 90% (if storing the bike ) or 100% if using it the next day to help get around that charge cycle limit and get the longest life from the battery. It should never be stored at 100 %, but needs to be taken to 100% charge every 4/5 90% charges to equalise the cells, then used after 1/2 hours cooling down. Cell failure due to poor BMS equalisation is the main cause of E bike battery demise. It is the BMS again that controls battery charge and ultimately life. Hopefully your batteries BMS is doing all this for you

but don't know how it gets around that 100% charge/storage problem?
Performance will drop before it gets to 2000 cycles. I have had my gasgas E bike for a year now , it is used to commute on and weekends so charged every week at least so maybe 75/100 charges , and while in use it still performs fine range at the std power has dropped from 77 to 75 miles . That may be the difference between lead acid and your new one, lead acid doesn't suffer from that charge cycle decay to the same extent, it likes being fully charged.
Reading on the other forums about those who have fitted non lead acids they seem to get the best out of them in warm countries and where the bike is stored without access to a smart charger for lead acids ( the reason for fitting them) for long periods.

Interesting to see how it performs over a cold winter. I would think even if it starts out cold , being on top of the rear exhaust it will soon get it up to temp and be able to charge .
As I said , please let us know how you get on
