What Keep On is built to do.

A starting point for a purchase decision

Keep On is a free planning and comparison tool for portable power stations. Enter accurate device information and check the assumptions before relying on an estimate. Specifications, listings and product configurations can change after a review.

Estimates have limits

Estimated runtime depends on battery condition, starting charge, conversion losses, temperature, idle draw and appliance behavior. The displayed range varies the usable-capacity assumption; it is not a tested runtime range or statistical confidence interval. Check output, plug and surge-duration compatibility with the manufacturer.

Do not use this tool as the sole basis for critical-power decisions or electrical installation work. It does not cover hardwired whole-home systems, transfer equipment, medical equipment requirements or replenishment from solar and extra batteries.

Purchases are made at the store

The merchant and selected seller handle prices, checkout, delivery, returns and applicable warranty terms. Verify the exact US standalone model, seller and included accessories at checkout. Keep On cannot guarantee availability, price, uninterrupted access or any particular outcome.

Your saved work

Keep copies of plans that matter to you. Browser storage is not a backup service, and a shared link exposes the settings embedded in it. Read our privacy page for details.