Stripping pliers and crimping pliers are required for the modules. For the NODE Battery, an Allen key, heat-shrink tubing, crimping pliers and crimp contacts are recommended.
In general, little previous knowledge is required. You should be able to strip cables and recognise the positive and negative terminals on the battery, cables and devices. You should have a basic knowledge of electricity (watts, amps etc.).
For the NODE Battery, you should also be familiar with various fuses and be able to connect crimped contacts with stripped contacts.
Not much more is necessary!