Here is the context:

Primary AA batteries use cheaper materials and are great for low-draw devices.

I have looked it up on the internet, but no results came up.

  • idiom: to draw current from a source. Adjective: low-draw.....:) – Lambie Apr 5 '18 at 17:29

"Low-draw devices" simply means devices that demand little current from the battery - a hand-held calculator for instance. But really, that sweeping statement as quoted isn't entirely true. 'AA' is a form factor, not a capacity, and the ability of an AA battery to supply higher currents depends on the technology used. see for instance the chart on Wikipedia

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To augment peterG's correct answer...

Let's take a look at the following:

This device resonates a lot.

This is a high-resonance device.

This device draws very little current.

This is a low-draw device.

A noun can be formed from the verb:

resonate -> resonance

draw -> draw

Some English verbs are of Latinate origin (resonate) while others are of Germanic origin (draw).

The formation of nouns from Latinate verbs follows Latinate rules, from Germanic verbs, Germanic rules.

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