This is something I wondered about ie getting & changing the 650 (and 350 I suppose). I believe there is something on youtube about it.
And I don't know if Sony will actually sell a battery, they aren't usually that helpful !
I t also made me think...........
You should only charge up when nearly out, to prolong battery life.
So what happens when you plug in to d/load books ? It always starts charging.
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