Extending 7 day London Oyster card for extra zones

I bought a 7 day London Oyster card for zones 1, 2, and 3 for 45 pounds, before realizing my hotel for the first two days was in Woolwich, which is in zone 4.

What is the best way to extend the use of my card? I plan to ride from Woolwich to/from zones 2 and 3 twice a day, so 4 trips total.

Do I just load extra money on the card, and if so: how much?

london oyster-card

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Extending 7 day London Oyster card for extra zones - The Westminster Palace on green embankment of the River Thames

Extending 7 day London Oyster card for extra zones - Drone view of Hampton Court Palace located in England in London with green grassy lawns with plants near fence and trees near pathways with people under cloudy gray sky

How do I extend my Oyster card?

OEPs do not extend the Oyster system beyond it's area....If using a self service machine the process is simple:

Select the Oyster services option.

Touch your card on the yellow reader.

Select the Add OEP button.

Touch your card on the yellow reader again.

Can I add another zone to my Travelcard?

You can add or reduce the zones on your Travelcard.

What is a Travelcard extension?

Extension fares are the single Pay As You Go (PAYG) fare for travel in the zones for which the Travelcard held is not valid. PAYG single fares can be found using the single fare finder on the TfL website via the following link: https://tfl.gov.uk/fares/find-fares/tube-and-rail-fares/single-fare-finder.

Can I use Oyster card twice?

1. Re: Can 2 people share one Oystercard and just swipe it twice? No.... One each.

Oyster Card vs Travelcard Price Comparison, Transport for London

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Images: Cristian Dina, Ollie Craig, Gotta Be Worth It, Ollie Craig