I rebuilt a pack over a year ago to experiment myself and bought 2 additional good full batteries from dismantler from wrecked cars back then (had 3 packs / about 90 modules). Only a few modules turned out to be bad in my own pack. Many of these will test/charge good. $6 each
Panasonic 7.2V NiMH Hybrid Battery Modules
OEM-style Panasonic 7.2V NiMH modules for Toyota/Lexus hybrid battery repairs and rebuilds.
Great for hybrid battery repair, rebuilding, replacement modules, testing, or spare parts.
Other than Prius, I believe these are the same modules used in these vehicles:
Toyota Prius Gen 2 — 2004–2009 — 28 modules
Toyota Prius Gen 3 — 2010–2015 — 28 modules
Toyota Prius v — 2012–2017 — 28 modules
Toyota Prius c — 2012–2021 — 20 modules
Toyota Camry Hybrid — 2007–2017 — 34 modules
Toyota Avalon Hybrid — 2013–2018 — 34 modules
Toyota RAV4 Hybrid — certain NiMH versions/years — 34 modules