Spare 12V lead acid battery? I repurposed it into a supersized USB power bank! Also works with car batteries (a basic electronics understanding is required!) : r/recycling
Akku kompatibel TEV12500 12V 50Ah AGM Blei Accu Ba - Akkus & Batterien für jeden Zweck
Mighty Max Battery YTX12-BS GEL Battery Replaces Triumph Thruxton Speed Triple 900CC YTX12-BSGEL322 | Zoro