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Batteries

Fridge and lights only. How long would a battery last in a blackout?

Red fox avatar for weekend_tinkerer

weekend_tinkererCanberra · Topic starter

The quote includes backup for the fridge, internet and a few lights. The salesperson said 'overnight should be fine', but didn't say how much charge that assumes. How do I get a useful estimate instead of a best-case answer?

3 replies

  1. Illustrated cat avatar for littlewombat

    littlewombatHobart

    #1

    Ask them to list everything on those circuits and estimate its energy use overnight. Then get estimates for a full battery and for your chosen reserve level. A blackout won't always start with it full.

  2. Tabby cat avatar for Mia83

    Mia83Sydney

    #2

    Also ask about the fridge starting up, not just its normal running power. That's one I'd leave to the installer to check.

  3. Red fox avatar for weekend_tinkerer

    weekend_tinkererCanberra · Topic starter

    #3
    Replying to littlewombat, #1

    That's what was bothering me. I'll ask them to use the reserve setting and assume no solar overnight. Our switchboard labels are a bit of a mystery too, so I'll get the circuit list checked.

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