For a durable solution use bootlace / ferral covers over all cables connected to screw terminals, raw cables have a number of draw backs. The length may need to be trimmed before insertion into 2.5mm terminal.
- 0.5mm2 Crimp Cord Wire End Terminal Bootlace Ferrule Connector.
- Self-Adjustable Ratcheting Ferrule Plier Crimper HSC8 6-4A 0.25-6mm² AWG23-10.
- Many sizes and options available including (Insulated / uninsulated) and twin cable end
- Kits available with containers and tools are from suppliers / ebay