Disconnecting battery for 3 months

[Stanners]

Hi,
Working overseas for 3 months - leaving behind my beloved A3.
Any potential issues in reconnecting the battery after 3 months you reckon ?
Cheers,

 

[Ormesome]

Iv left various cars for longer with battery disconnected. Leave the car unlocked, bonnet hatch open, just in case. It will be fine. Recently left my A3 for just under a month with battery connected, started first time.