Search how to ship a product with a battery from China and you get a 2019 dropshipping notice, freight forwarders talking about containers, and courier pages written for people sending one laptop. None of them says what a brand selling earbuds, a heated gadget or a power bank actually needs to know before listing it.

The short answer: a lithium battery built into the product ships on the battery products that parcel lines out of China run, as long as it is small (20 Wh a cell, 100 Wh a battery). A battery packed in the box beside the product must, since 1 January 2026, travel at 30% charge or less if it is over 2.7 Wh. A battery on its own, and that includes every power bank, is the hard case: many parcel lines refuse it.

This guide covers:

• The three kinds of battery product, and which one yours is
• The 2026 air rules in plain words, including the new 30% charge rule
• The watt-hour check, with worked examples
• How lines out of China sort goods into general, battery and sensitive
• Whether a battery line is slower, measured on real parcels

The three kinds of battery product

The air rules, which every parcel from China lives under because the long leg is a flight, sort lithium batteries by where they sit:

• Inside the device. Earbuds, a smartwatch, an electric toothbrush, a massage gun. The battery is installed and the product works out of the box. This is the most common case and the easiest.
• Packed with the device. A camera with a spare battery in the box, a tool with a removable pack shipped beside it. Same box, battery not installed.
• On its own. A replacement battery, a battery pack sold by itself, and every power bank. IATA's 2026 guidance says power banks "are to be classified as batteries", even if they have a torch or a cable built in.

Most products sold from China are the first kind. If yours is the third, check the line before you build a store page around it.

The 2026 rules in plain words

IATA publishes a guidance document on the air rules every year. The 2026 version, based on the current ICAO rules and the 67th edition of the IATA Dangerous Goods Regulations, sets out what changed and what each kind needs:

• Battery on its own: shipped at no more than 30% of its rated capacity, and not on passenger aircraft unless approved. That second part is one reason many parcel lines will not take them.
• Battery packed with the device: from 1 January 2026, a lithium-ion battery over 2.7 Wh must also travel at no more than 30% charge. Before this year it was a recommendation.
• Battery inside the device: 30% charge is "strongly recommended" but not required.

Two more rules apply to every kind. The small-battery tier that parcel lines handle stops at 20 Wh per cell and 100 Wh per battery. And the maker and every seller after it must be able to show the battery's UN 38.3 test summary, the record that it passed the standard transport tests. The guidance says a link or QR code to the summary is enough.

A package with no more than four cells or two batteries installed in devices, in a shipment of one or two packages, does not need the battery mark on the outside. A single parcel to one customer usually fits that.

The watt-hour check

Batteries are labelled in milliamp-hours, the rules use watt-hours. The sum is the one IATA gives: divide the mAh by 1,000 and multiply by the voltage. Most lithium-ion cells are 3.7 volts.

• Earbuds case, 500 mAh: 0.5 x 3.7 = 1.85 Wh. Small, inside the device, the easy case.
• Phone-size battery, 4,400 mAh (the example IATA uses): 4.4 x 3.7 = 16.3 Wh, under the 20 Wh cell limit.
• Power bank, 10,000 mAh: 10 x 3.7 = 37 Wh. Under 100 Wh, but a battery on its own.
• Power bank, 27,000 mAh: 27 x 3.7 = 99.9 Wh, right at the 100 Wh limit.

Ask the supplier for the watt-hour rating and the test summary in writing. A supplier who cannot send the test summary for a product with a battery is a reason to keep looking, and the guide to verifying a Chinese supplier before you pay covers the other checks.

How lines out of China sort your goods

Parcel lines out of China do not price one product for everything. They run separate products by goods class, and a parcel goes on the one its contents allow. The product names on the lines' own waybills show the pattern:

• YunExpress runs Economy products marked "with Battery", "Unrestricted", "Cosmetics, Restricted" and "Clothing". Its Economy and Standard Express pages list the items they carry as "Battery-Powered, General Cargo".
• SDH, a lowest-cost line to the US, runs a general goods line (普货), a battery line (带电) and a sensitive goods line (敏感).
• LX grades its products slightly, very and extra sensitive.

On YunExpress, the products that carry batteries carry general goods too, so a battery does not shut you out of a frontier line. What carriers rarely publish is the detail: YunExpress's pages do not list which battery types each product takes and point you to the carrier. One forwarder's battery chart flags the US, Canada and Australia as strict on batteries. A 2019 notice from a dropshipping platform said batteries on their own could not go from China to the US at all.

Batteries are not the only class. Lines treat liquids, creams, powders and magnets as sensitive goods, and perfume, nail polish and aerosols, which count as flammable for air, are often refused outright. The fix is the same for every class: tell the line exactly what is in the parcel and let it pick the product. A battery packed into a general goods parcel can be held or sent back, and the delay lands on your customer.

Is a battery line slower? Measured

A common worry is that a battery line adds days. Measured on US parcels shipped from China in mid-2026, it did not, on the line where it could be measured.

On YunExpress to the US, parcels with a first carrier scan in June and July 2026, the median delivery time per store on the battery-capable Economy product ran 10.1 to 13.0 days. On the general goods Economy product it ran 9.2 to 15.7. On SDH, a lowest-cost line, the general goods product ran 14.0 to 21.9.

So the battery product sat inside the general product's range on the same line, and the gap between two lines was far bigger than the gap between two goods classes. If a battery product is shipping slowly, the line it is on is the first thing to check, not the battery.

Per-store medians are used here because a few large stores make up most of the parcels on some products, and a single parcel-weighted figure would describe those stores, not the line.

What to do

• Work out which kind you sell: inside the device, packed with it, or on its own
• Ask the supplier for the watt-hour rating and the UN 38.3 test summary, in writing, before you list the product
• Do the watt-hour sum and check it against 20 Wh a cell and 100 Wh a battery
• Ask for packed-in batteries at 30% charge or less, now required above 2.7 Wh
• Ask your fulfilment partner which line takes it to each country you sell in, before you spend on ads
• Think twice about power banks as a first product from China; check a line will carry them first
• Tell the line what is in the parcel, every time

How we handle this at Commercive

Commercive is your all in one sourcing and fulfilment partner. We source from a product link or a photo across our vetted factories, or work with the supplier you already use, and ask for the battery details before a product is listed, not after the first order is stuck.

Your stock is received on our floor in China, held with no storage fees, and every order ships on the line that fits the product and the destination: a battery line when there is a battery, a cosmetics or sensitive line when there is a liquid or a cream, and a general goods line when there is neither. Each parcel's scans sit in our dashboard. We recommend frontier lines such as YunExpress to essentially everyone; a lower-cost line might suit a low-price product with patient customers. Our measured delivery times by line and country are on our shipping status page.

If you're currently running a brand, just give us the product and your daily order volume. We'll get you a quote within the next 24 hours to hold up against what you're paying today.

Where these numbers come from. The rules are from IATA's Lithium Battery Guidance Document revised for the 2026 regulations (dated 1 January 2026, based on the 2025-2026 ICAO Technical Instructions and the 67th edition of the IATA Dangerous Goods Regulations), read 22 October 2026; it is guidance, so check the current regulations and your line before you ship. Line descriptions are from YunExpress's Economy Express and Standard Express pages, one forwarder's battery chart and a 2019 dropshipping notice. Watt-hour figures are examples at 3.7 V. Delivery times are our own measurement: parcels to the US from stores we fulfil from China, first carrier scan 1 June to 31 July 2026, test stores excluded, calendar days from the first scan to the first delivered scan, measured 22 October 2026, shown as the range of per-store medians for stores with at least 30 parcels on that line product.

Can you ship lithium batteries from China?

Yes, if they are small and built into the product or packed with it. Parcel lines out of China run battery products for that, within 20 Wh a cell and 100 Wh a battery. A battery on its own, including a power bank, is much harder: it cannot fly on passenger aircraft without approval, and many parcel lines refuse it.

Is a power bank a battery or a device for shipping?

A battery. IATA's 2026 guidance says power banks are classified as lithium ion batteries on their own (UN 3480), even with extra features such as a torch or a built-in cable. They must ship at no more than 30% charge.

What changed for battery shipping in 2026?

From 1 January 2026, lithium-ion batteries packed with a device, rather than installed in it, must ship at no more than 30% of rated capacity if they are over 2.7 Wh. For batteries installed in a device, 30% is still a strong recommendation, not a rule.

How do I work out the watt-hours of a battery?

Divide the milliamp-hours by 1,000 and multiply by the voltage. A 10,000 mAh power bank at 3.7 V is 37 Wh. A 4,400 mAh battery at 3.7 V is 16.3 Wh. If the label shows neither, ask the manufacturer.

Do products with batteries take longer to ship from China?

Not by themselves, in our data. On YunExpress to the US in June and July 2026, per-store medians on the battery-capable product ran 10.1 to 13.0 days, inside the 9.2 to 15.7 range of the general goods product. The line made a bigger difference than the goods class.

What documents do I need for a product with a battery?

The UN 38.3 test summary, which the maker and every seller after it must be able to provide (a link or QR code is enough), plus the battery's watt-hour rating. Some lines also ask for a safety data sheet. Get all of them from the supplier before you list the product.