Milly Software
01Overview

California battery fee compliance, automated.

Applies the California Battery Recycling Fee (1.5%, $15/unit cap) to products in your battery collection — only on CA-shipping orders. Itemized at checkout, disclaimer cites CA H&S Code § 25214.10.2.

On the Shopify App Store · No code required
At a glance
scopeCalifornia · H&S Code § 25214.10.2
fee1.5% per unit, $15 cap above $1000
gatingshipping address (CA only)
mappingShopify collection
installShopify App Store · Free · Shopify Plus only
02Features

What it does, what it doesn't.

Narrow scope, deep integration. We don't try to be a platform — we solve one problem well, on Shopify.

Collection-driven
You pick the Shopify collection that contains every product with a battery. No SKU mapping, no tags — your existing catalog structure drives it.
Itemized at checkout
Fee renders as its own line item in the order summary, with a configurable disclaimer message. Goes through normal refund flow when an order is returned.
Ships-to-CA only
Cart Transform Function calculates the fee. UI extension at checkout reads the shipping address and only writes the trigger when the customer is shipping to California.
Editable disclaimer
The customer-facing message is fully editable. Defaults cite CA H&S Code § 25214.10.2; merchants can adjust wording or replace it entirely.
03In practice

What it looks like on an order.

A worked example, so you can see what the app adds and where it shows up.

ProductLithium Battery Pack 20K
Ships toLos Angeles, CA 90210
Fee$0.75 (1.5% of $50)
Resultitemized at checkout