[KongchangAI]
Unverified50% confidenceBenchmarkExact time

The cost of portable energy storage devices declined by more than 70% from 2015 to 2024.

1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
9/5/2026
First Seen
Valid until: 12/4/2026

Sources

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https://kongchang.com/claim/863172
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curl https://kongchang.com/api/v1/knowledge/claims/863172
MCP
get_claim(id=863172)