If you mean the rechargeable Rollei 66251 battery then you can get them here. They're listed as temporarily unavailable at the present time though you can request an email when they're back in stock.
You can also directly order them from this Japanese supplier (you'll get a fair translation if you use FireFox as your browser and install the FoxLingo plug-in).
I hope that you've found my reply to be of assistance; please spare a moment to rate my answer.
Answers & Comments
If you mean the rechargeable Rollei 66251 battery then you can get them here. They're listed as temporarily unavailable at the present time though you can request an email when they're back in stock.
You can also directly order them from this Japanese supplier (you'll get a fair translation if you use FireFox as your browser and install the FoxLingo plug-in).
I hope that you've found my reply to be of assistance; please spare a moment to rate my answer.