bought the battery as a replacement for the original in a SL78H.
The original battery was, after granted by the manufacturer's warranty period of six months but significantly after last ... so bad that from the charging of the battery was fresh again dead.
As was just lying on the floor and make phone calls via speakerphone)
Whether the duration of the Weiss batteries behaves similarly one can not yet say. Anyway, I must now, to make phone calls, no longer lying on the floor.
Otherwise, the battery is well-made, perfectly fit, was immediately ready for use and maintains itself already very long ...
The purchase I do not regret it, even if it was slightly more expensive than comparable products.