Dobrý den, Vivo V21 deklaruje napětí baterie 11V. Dá se nabíjet i z běžné nabíječky nebo powerbanky? Dále všechna srovnání výdrže baterie jsou asi "papírová" na základě kapacity. Jenže tou se lze řídit pouze při stejném napětí. Jestliže srovnám energii v baterii Vivo V21 a Samsung A52, tak vychází energie u Vivo V21 11V x 4000mAh cca 44 Wh a u Samsungu A52 4,43V x 4500 mAh cca 17 Wh. Kde je tedy srovnání reálné výdrže obou mobilů?
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