The PA needs to be kept on a tender (I use the H-D 5 amp one) as the electronics chatter away to themselves and the key if near 24/7 so the tiny little battery
over 4-5 days (if not on a tender) may find it hard to turn over 12:1 compression. Due to such high compression Harley lowered the gearing on the starter to help from late 22, and with the 24 models have upgraded both the generator the battery and various electrical components.
If you ride daily there is no problem. But if you park it up in a field for 4-5 days you may struggle to start it. So a few of us have added extended leads to the battery and carry a jump pack.
A generator & battery upgrade is available for pre-24 models, possibly on warranty if you have an alternator failure, but H-D will not use the new stuff until the old stock is used up.
Sykes are happy to take on any warranty work, and
In some cases will do upgrades on warranty.e.g the upgraded starter gear.