Combining Html5 Localstorage And Local Database For More Space?

I am developing a web application for remote areas with little internet connectivity and was wondering if I can use HTML5 localStorage with a maximum size of 10MB and HTML5 local D

Solution 1:

You might expect the browser to enforce a single limit for all storage an origin can use, but the major browsers are actually enforcing limits separately for each storage mechanism.

Source: http://www.html5rocks.com/en/tutorials/offline/storage/#quotas

That answers your question I think.