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Ampax 10000mAh Modular Power Bank Uses Replaceable 21700 Batteries

Daniel Cross 1 min read

Ampax launches a modular power bank on Kickstarter with replaceable 21700 batteries, 10000mAh capacity, 22.5W output, and USB-A/USB-C ports. Pledge $36 for the power bank or $50 with a charger. Shipping in August 2025.

Ampax 10000mAh Modular Power Bank Uses Replaceable 21700 Batteries
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Ampax has launched a crowdfunding campaign on Kickstarter for a modular power bank that uses replaceable 21700 batteries. The power bank accepts two standard 21700 cells, which are commonly found in flashlights and other devices.

Ampax 10000mAh modular power bank with replaceable 21700 batteries
The Ampax power bank accepts two standard 21700 cells.

Replaceable batteries extend device life

The power bank has a capacity of 10,000mAh (37 Wh) when two batteries are installed. It offers one USB-A port and one USB-C port, with a maximum output of 22.5 watts. Users can swap batteries when they run out of charge, extending the device's useful life.

The power bank is available on Kickstarter for 36 USD (about $36.00). A pledge of 50 USD (about $50.00) includes a compatible battery charger that can charge four cells at once. Shipping is expected to begin in August 2025.

The use of replaceable 21700 batteries sets this power bank apart from most portable chargers, which have built-in cells that cannot be replaced. This design allows users to carry spare batteries and avoid waiting for the power bank itself to recharge.

Source: NotebookCheck

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