Even at the time they were new, I only had about a week of benefiting from their capacity. It left even if the batteries were not in use.

I discovered that precharged batteries do the job better: The low self discharge enables dealers to store them up to 12 months and still sell them without pissing off their customers.
Of course, the discharging properties stay after recharging batteries at home..

The other benefit is, that the low self discharge enabled me to leave the batteries in the camera for more then two weeks. Hence I stopped suffering the loss of first class snapshots just because the camera is not ready.

This apllies to multiple camera series: Canon Powershot, Fujifilm Finepix, Pentax K series and basically all models that come with AA or AAA batteries – not with the prebuild own battery models like in the Canon Ixus series.

As for Germany, the dkamera magazine suggests these tested precharged batteries:

• Panasonic Infinium
• Kodak Digital Camera Battery Pre-Charged
• Ansmann maxe
• Conrad energy Endurance
• Duracell ActiveCharge
• Sanyo eneloop
• Varta Ready2Use
• AccuPower AccuLoop
• ELV Combo
• Hama Ready4Power
• GP Recyko
• UniRoss Hybrio

Please compare worldwide vendors and models yourself by regarding to the international brands.
Have fun using those!