Interesting debate.
I have repaired this pack with heat shrink. Personally I still prefer packs with wires rather than sockets in the hard case. With sockets, it is easy to plug them in reverse, or get some metal (like a chassis) across the terminals.
The WORST thing about hard case packs though is the open invitation for resellers to charge twice the price for the same cells, because they are 'car specific'. And often inferior.
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