Super helpful, not sure why that didn't show up on my first google search. This guy here?

https://www.aliexpress.us/item/3256806648577113.html?src=google&src=google&albch=shopping&acnt=708-803-3821&slnk=&plac=&mtctp=&albbt=Google_7_shopping&gclsrc=aw.ds&albagn=888888&isSmbAutoCall=false&needSmbHouyi=false&src=google&albch=shopping&acnt=708-803-3821&slnk=&plac=&mtctp=&albbt=Google_7_shopping&gclsrc=aw.ds&albagn=888888&ds_e_adid=&ds_e_matchtype=&ds_e_device=c&ds_e_network=x&ds_e_product_group_id=&ds_e_product_id=en3256806648577113&ds_e_product_merchant_id=5344703592&ds_e_product_country=US&ds_e_product_language=en&ds_e_product_channel=online&ds_e_product_store_id=&ds_url_v=2&albcp=20268592310&albag=&isSmbAutoCall=false&needSmbHouyi=false&gad_source=1&gclid=Cj0KCQjwhb60BhClARIsABGGtw-_N18vAPoPpBSGij10JeG4mH6Tv-aDQp9X8x9csTitHxVjheFbYPcaAq2IEALw_wcB&aff_fcid=9af3f0e5dedc49c38de66bd25593bd3e-1720701748997-03815-UneMJZVf&aff_fsk=UneMJZVf&aff_platform=aaf&sk=UneMJZVf&aff_trace_key=9af3f0e5dedc49c38de66bd25593bd3e-1720701748997-03815-UneMJZVf&terminal_id=b9140eed098c49f2b2c02badc452c732&afSmartRedirect=n&gatewayAdapt=glo2usa

Thanks for the add - short time lurker, first time poster.

Made my first Chinese purchase about a month ago, a P505.  I had a new to me Aspero that won't get a lot of use, the Stages that came with it was physically broken, and I rec'd a $300 allowance to replace it. I figured this would be a good venture into the budget cycling zone, and am excited to learn more from this board.

I did have two questions:

I figured a second charger to keep in my gear bag would be a good thing to have, I try to keep spares of everything I need often just in case. Given that it is proprietary, I figured proactively obtaining one would be a good idea. I emailed Magene, a month later they replied back telling me that it is $7, $20 to ship, and I also need to pay customs. Is there not an easier way to get one?

It doesn't appear to sync well on BT - only Ant +.  On BT I get a lot of drop outs, however I haven't had any issues on Ant +. When I asked Magene about it they recommended resetting it, which I haven't done yet because the instructions they provided required two chargers to do so. Any experience or feedback on this issue?