Where can I get JDB 180R replacement battery?

You could ask Lidl customer service. "Parkside" is the label they stick on all sorts of far eastern tat.
You could also think about replacing the battery cells themselves:
https://www.amazon.co.uk/Seilylanka-3000mAh-Parkside-Battery-self-Installation/dp/B07R13HLGB
You can probably find the same on sites like Aliexpress

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December 2023