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The Nimble Champ Pro is the eco-conscious power bank pick. 10,000 mAh, 20W USB-PD, and a chassis made from 73% recycled plastic. The rarer thing: Nimble is a B Corp and runs a free take-back program — mail in your old power banks (any brand) and they’ll recycle them properly.
Performance is legit
Don’t assume eco means compromised. The Champ Pro handled iPhone 15 Pro fast-charge (20W PD) through our entire test regimen without throttling. Measured usable capacity after conversion losses: 7,600 mAh — typical for this battery tier.
Build quality holds up
Bio-composite plastics sometimes flex more than petroleum plastics. The Nimble doesn’t — the chassis is as rigid as an Anker or INIU equivalent after 8 months of daily carry. The fabric-wrapped variant shows more wear than the matte version.
The premium
At $45 the Champ Pro costs $20 more than an equivalent Anker/INIU. If materials provenance doesn’t motivate you, the cheaper bank charges the same. If it does, you’re paying $20 for a real difference in supply chain.
Bottom line: Not the fastest or biggest. But if you’d buy a $45 bank anyway, this is the one where the $20 premium buys something real.