RE: Solid state batteries27 Jun 2021 16:08
TD, my understanding of battery charging is that you have to replace approximately what you have taken out. So a 100 amper hour battery would supply 1 amp for 100 hours through to 100 amps for one hour. Therefore you have to replace the charge in a similar way. Charging at 1 amp for a 100 hours through to 100 amps for one hour. If the charging time has been reduced, surely the charge rate has to increase. So in the example above, to reduce the charge time from one hour to say 10 minutes, the charging current must increase six fold, a massive 600 amps. The internal resistance of the battery and the resistance of the charging cable would need to be extremely low or the heat generated would be huge. So solid state or no how do they intend to get round this problem? Or have I missed something fundamental? It's something that's always puzzled me regarding short charging times since watching the old lead acid batteries boil almost dry on fast charge.