The 10s has a good storage setting that will bring your packs up to 50% charging at 1C
The XP storage mode first discharges then charges at less than 1 amp taking forever to get to 50% if you have large capacity packs.
I had hoped that cellpro would do a firmware update so the storage setting on the XP would charge at 1C like the10s but I got no response from cellpro