Quote:
Originally Posted by RedDevil
Modularity adds to the cost. Batteries need to go into the car and ideally stay there for its life. Compatibility is a reason to reduce the options. Even a modular battery would need different control electronics depending on its capacity. And last but not least, Tesla redefines batteries, integrating the charging and control electronics in the pack. The 'battery' is a complete system nowadays.
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Using modules reduces cost of you are going to make dozens of vehicles on the same platform and want to use the same modules to mix and match pack size based on the application. Especially if you use the same modules for hybrid batteries.
The Audi E-Tron Battery:
