Keep your refrigerator running when the power goes out.

A power outage can spoil a fridge full of groceries in under a day. Answer four questions — your fridge size, how long you need it to run, your budget and what matters most — and we'll estimate the backup power that fits, in about a minute.

• 4 quick questions — no login, no email required
• One clear pick, plus honest tradeoffs — never a wall of products
• Real product specs and a conservative runtime estimate — never a guarantee