User blog comment:Dragonjet/KC3改/@comment-119.94.104.122-20151205093042/@comment-1820055-20151207015601

if by blackout you mean unexpected shutdown then this is unfortunate as it is handled by chrome. the extension has nothing to do with this, nor can we do something on our side to fix this. we could only advice.

in some cases, it would probably be best to create a separate chrome profile just for kancolle. each chrome profile has a separate cache and might be saved if other profiles are being used during the blackout. better yet, get a UPS.