Yes, three modules in series would give you 24V. You would need to ensure you keep them within voltage limits by charging and discharging them with voltage cut offs. Using a BMS is preferable but maybe not essential with only three modules.
I still have 29 modules available.
Gen 2 Nissan Leaf modules from a 2015 Nissan e-NV200 battery pack, removed due to battery upgrade.
LeafSpy reports 82% state-of-health and 10mV cell balance, no evidence of overheating. See Leafspu screenshot. Each module was 500wh when new, therefore you can expect approx 410Wh now.
Each...
Correct. I can offer 6 modules at £65 each, £390 total (approx 519 USD). However, the modules are UK collection only, it's not possible to ship battery modules overseas.
However, I will be driving to Southern Spain via France in January, so there's a possibility I can deliver on route.