Milly Software
Setup guide

Install CA Battery Fee

Four steps. Estimated install time: 5–15 minutes depending on catalog size. Install from the App Store, then finish setup in your dashboard.

Install on Shopify App Store →
01
Install from Shopify App Store

Free public Shopify app. Requires Shopify Plus — the checkout-extensibility surface this app uses for the disclaimer is Plus-only.

What you'll see · Shopify App Store
  • Approve the permissions the app asks for: read products, write cart transforms
  • Shopify Plus is required
App installed
02
Configure battery + fee products

In the dashboard, search-and-select the collection containing your battery products and the unlisted fee variant. Customize the disclaimer message template if needed.

What you'll see · App dashboard
  • Battery collection: "Batteries" · 47 products
  • Fee product variant: "California Battery Recycling Fee" · $0.01
  • Message: "A {AMOUNT} California Battery Recycling Fee…"
Settings saved
03
Add the disclaimer block at checkout

Open your checkout editor and add the CA Battery Fee Disclaimer app block to the Order summary section. Toggle on "Include block in Shop Pay" under Checkout behavior so the disclaimer renders during Shop Pay checkouts too. Required step — without the block placed, no fee is applied at checkout.

What you'll see · Shopify admin → Settings → Checkout → Customize
  • Order summary → Add app block → "CA Battery Fee Disclaimer"
  • Toggle on "Include block in Shop Pay"
  • Save
Block live on every checkout
04
Test with a California address

Add a battery product to cart, proceed to checkout with a CA ZIP. The fee + disclaimer render in the order summary, calculated per California H&S Code § 25214.10.2.

What you'll see · A test checkout
  • Ship to: Los Angeles, CA 90210
  • Cart: 1× Battery Pack · $50.00
  • Subtotal $50.00 · CA Battery Recycling Fee $0.75
  • Disclaimer: "A $0.75 California Battery Recycling Fee…"
Fee itemized at checkout
Support
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