how can i link one of my other products on a product page

[Ocean10media]

my store djidronezone.com has sells lots of drones and cameras. there is some of the same models with options to buy them with one battery or three batteries. I need a way to cross link the two products so that if someone lands on my site through the one with one battery for example they have the option to click over to the other option. i have tried this with variants but it didn't work very well so I am looking for an app that could help. on this website you can see the options I am trying to replicate https://store.dji.com/uk/product/dji-mavic-3-pro?from=site-nav&_gl=1%2Ahj8z2o%2A_up%2AMQ..&gclid=Cj0... 

[PaulNewton]

Hi @Ocean10media no app needed use either a metafield, or a collection to relate the products.

And if using an OS2.0 theme a custom-liquid block code similar to the following:

i.e. for metafield {{ products.metafields.purchase_options.product }}

or 

{% assign collection_handle = product.handle %}
{% for cross_product in collections[collection_handle].products %}
 {% if cross_product.handle != product.handle %}
  <a href="{{cross_product.url}}>link text</a>
 {% endif %}
{% endfor %}

 etc 

If you need this business logic and theme customization created then contact me for services
Contact info in forum signature.
ALWAYS please provide context, examples: store url, theme name, post url(s) , or any further detail in ALL correspondence.

[Ocean10media]

Hi, thanks that would be really helpful if you could recommend who helped.

[Easify-Mark]

Hi @Ocean10media ,

The Easify Product Options app can meet your needs with its Option URL feature for cross-product linking 🤗. Specifically, you can use the app to create a Battery option, displayed as a Button or Dropdown, with values such as "1 battery" and "3 batteries".

Each option can be linked to its corresponding product page, so when customers make a selection, they are redirected to the relevant product page. Both product pages will display the same battery options for consistency.

If you're interested in trying the app, feel free to reach out to the Easify team for a detailed setup guide tailored to your store.