Found some unused batteries made in West Germany, which makes them at least 30 years old, and they still got some juice left in them! : r/mildlyinteresting
Household Batteries for sale in Munich, Germany | Facebook Marketplace | Facebook
Batterie, 6 V, 180 Ah, wartungsfrei | Kärcher
Power One P312 Hearing Aid Battery (10 Packs Of Each), 51% OFF
12V 34ah Recharge Battery VRLA Gel Deep Cycle Lead Battery with German Technolog - China Battery, Lead Acid Battery | Made-in-China.com