How long will the battery last? GM performed simulations that led them to conclude the battery will last many yrs earlier the 8-yr warranty period of time. Sign-up to confirm your address. You have been successfully signed up! Good! We've despatched you an email to confirm your membership. There was https://tedomarket.com/product/highly-recommended/charger-wireless-wired-wallet/battery-charger-cases/battery-capacity-battery-charger-cases/5000-6999mah/baseus-battery-charger-case-for-samsung-galaxy-s8-5000-5500mah-power-bank-case-for-s8-plus-external-backup-battery-charging-case-2/