Easily fixed - divide the battery pack and power supplies up -
Simplest would be to have 2 battery packs and power controllers that each drive every second jet.
Failure in one module would take out that fraction of power but still allow you enough to land safely.
Much easier than trying to only land with a left engine, of a twin engine aircraft, because it would only be every second fan that was out, evenly distributed across the wings.
You could also divide it say, 6 ways, so failure in one module would take out 1/6 of your power, and you would be able to land on the remaining 5/6 power.