With the supplied batteries I am absolutely satisfied: They are durable, available at an absolute bargain price and excellent fit in all the small devices, such as laser mouse, with the play my cats. In a conventional electric charging significantly higher prices is estimated, so you there already are considering, prefer to buy the same, a new device. I have been for two of these button cells 10, - EUR. By comparison, the laser mouse cost new, including two batteries, only 8.95 EUR.
The delivery arrived quickly and safely met a packed. Therefore, a strong buy recommendation! I'll be happy to revert to this item!