Question about Patona Premium Akku für Dyson V8

I do not know what the 'e' model refers to. The battery is one:
Patona 6134 DSV8, Premium Series
For DSV8, Li-ion 21.6V
3000 mAh 64.8Wh

I can't tell if it's the e model.
It simply corresponds to the model shown above.