MOQ is a per-part number, not a per-company number
A LiFePO4 MOQ is set by the part that changes, not by the size of the supplier. A label change on a 12V 100Ah LiFePO4 pack keeps four cells, one 100A BMS and one 1,280Wh test file, so only the print run is new. A case change needs a mould and a trial shot, and a cell or BMS change needs fresh test evidence.
Ask for the minimum in three lines: per model, per change, and per container. A supplier who answers with one number for the whole catalogue has either quoted a stock model and called it custom, or has not costed the setup your configuration adds.
| Change | What it triggers | Who carries the setup | What to ask |
|---|---|---|---|
| Label | Artwork and print setup | Buyer, usually inside the unit price | Minimum print run per label |
| Carton | Print run and drop test | Buyer | Minimum carton quantity |
| Terminal | Harness and torque check | Shared | Whether the terminal is a stock part |
| BMS | Parameter file and validation | Shared | Whether the firmware is standard or custom |
| Cell | Purchase lot and test evidence | Factory, with a minimum lot | Cell brand, grade and lot size |
| Case | Mould and trial | Buyer | Tooling cost and ownership |
The MOQ line in a quotation should name the configuration
An MOQ line without a unit and a model is not an offer. A quantity has to attach to a 7.2kWh rack module, a 4S 12V pack or a carton count before it means anything. The line should state the quantity, the model code, the configuration and the validity period.
Read that line against the BOM. If the quote states a unit count and the BOM lists a custom BMS, ask whether that BMS is already in stock. The answer decides whether the minimum is real or borrowed from a standard build.
| Quote line | Weak version | Strong version |
|---|---|---|
| Quantity | MOQ with no unit or model | A stated unit count for model X, 4S 100Ah, standard BMS |
| Configuration | Custom | Label change only, cell and BMS unchanged |
| Validity | Blank | Price valid to a stated date |
| Tooling | Included | Mould owned by buyer, stored at factory |
| Test evidence | UN38.3 available | Summary naming model X and the applicant |
Lead time starts at deposit and specification sign-off
A lead time quoted in days means little without a start date. The clock starts when the specification is frozen and the deposit clears, because the factory cannot place the cell order before both. The enquiry date, the sample date and the production date are three different dates, and a quotation that gives one number for all three is hiding the schedule. On the 48V 150Ah module, the 482 × 440 × 178 mm case and the cell lot are fixed only after sign-off.
Break the schedule into five stages and ask for a date on each: specification freeze, cell purchase, assembly, aging and test, packing and booking. The buyer controls the first stage and the artwork approval. The factory controls the middle three. The forwarder controls the last one, and the lithium battery import guide lists the documents that travel with it.
| Stage | What happens | Common delay | Document to ask for |
|---|---|---|---|
| Specification freeze | Drawing, BOM and BMS parameters signed | Late sample feedback | Signed specification sheet |
| Cell purchase | Cells ordered to the agreed brand and grade | Cell lot availability | Cell purchase record |
| Assembly | Welding, BMS install, case close | Missing connectors or labels | Production traveller |
| Aging and test | Capacity, internal resistance, cutoff checks | Retest after a failure | Batch test report |
| Packing and booking | Cartons, pallets, container slot | Peak-season space | Packing list and booking note |
Container fill sets the floor for a first order
A 20ft container holds 33.2 m³ and a 40ft high cube holds 76.3 m³, measured inside the box. A 48V 150Ah rack module measures 482 × 440 × 178 mm, which is 0.038 m³ before packing, so a 20ft container holds about 879 units by volume alone and closer to 750 after pallets and carton loss.
That arithmetic explains why the number a buyer cares about is often a container, not a carton. A first order that mixes three models can fill a 20ft box while each model sits below its own MOQ line. Ask the supplier to quote the container plan, not just the unit quantity.
| Container | Internal volume | 48V 150Ah units by volume | Realistic after packing |
|---|---|---|---|
| 20ft | 33.2 m³ | about 879 | about 750 |
| 40ft high cube | 76.3 m³ | about 2,020 | about 1,720 |
Payment terms move risk, not price
A payment term decides who funds the cell purchase and who carries the risk if the shipment is late or wrong. The structure matters more than the percentage. The lithium battery manufacturer guide describes the common first-order pattern: “Normal first orders run 30-50% deposit, balance before shipment. Small orders often go 100% in advance. Bigger amounts sometimes get letters of credit.”
Each structure fits a different order. A deposit protects the factory’s cell purchase on a custom build. A letter of credit protects the buyer on a large order but adds bank steps and document checks under UCP 600. Open account moves the risk to the seller and usually carries a credit cost that appears in the unit price.
| Term | Who carries the risk | Fits | Document to check |
|---|---|---|---|
| 100% in advance | Buyer | Small or stock orders | Proforma invoice and business licence |
| Deposit and balance | Shared | Custom first orders | Deposit receipt and inspection report |
| Letter of credit | Bank, against documents | Large orders with a new supplier | L/C draft and UCP 600 terms |
| Open account | Seller | Repeat orders with credit insurance | Credit limit and insurance cover |
The balance should release against a document you can check
The payment trigger matters more than the split. A 30% deposit leaves 70% outstanding, and that 70% should release against a document, not a promise. A balance released against “photos from the warehouse” gives the buyer no control. A balance released against a pre-shipment inspection report and a bill of lading copy gives the buyer something to check before the container leaves.
Name the inspection scope in the purchase order: quantity, serial range, cell markings, BMS model, capacity test record, carton labels and photos of the loaded pallets. Pay the deposit to the company account named on the invoice, never to a personal account.
Order timing around Chinese New Year and Golden Week
Chinese New Year 2027 falls on 6 February, and the National Day Golden Week runs from 1 to 7 October. Chinese factories slow down before the Spring Festival as workers travel, and many close for the holiday itself. An order that needs production before the break has to clear specification and deposit before the pre-holiday queue builds.
The calendar matters most for a first order, where the sample stage and the test stage both sit before production. A repeat order with a frozen specification and a stock BMS moves faster, but it still competes for the same line time in the weeks before the holiday.
What to fix in writing before the deposit
The purchase order should carry 11 lines: model, configuration, MOQ basis, unit price basis, Incoterm, lead time start date, stage dates, payment trigger, inspection scope, warranty terms and spare-parts list. With those in writing, the order stops depending on memory.
Add a change-control clause. A change to the cell, the BMS, the case or the label should trigger a written notice and a new date, not a verbal promise that the schedule still holds.
Frequently asked questions
There is no single number. It depends on the model and on the parts you change. A label change on a stock model carries the smallest minimum, a new case carries the largest. Ask for the minimum per model and per change in writing.
When the specification is signed and the deposit clears. Before that point the factory cannot order cells to the agreed grade, so any date quoted earlier is an estimate rather than a schedule.
It depends on the order size and the relationship. A letter of credit costs bank fees and requires exact documents, but it protects both sides on a large first order. A deposit is simpler and cheaper for a small custom build.
Yes. Each model still has its own MOQ, but the container is filled across models. Ask for a container plan that shows how many units of each model fit, and check the weight limit as well as the volume.
Full payment before production to a personal account, and a balance released before any inspection. Both remove the buyer’s control. A company account, a written invoice and an inspection report are the minimum safeguards.
Unit price usually falls with volume, but cell grade, BMS model and packaging change the curve. Ask for a price break table by quantity, and compare the same configuration at each step.
Sources: Lithium battery manufacturer guide (supplier checks, MOQ practice, first-order payment pattern of 30-50% deposit and balance before shipment, letters of credit for larger amounts); LiFePO4 OEM and ODM process page (MOQ drivers by label, case, BMS and connector); lithium battery import guide (UN38.3, MSDS, Class 9 declaration, commercial invoice and packing list); 48V 150Ah telecom product page (7.2kWh, 150A charge and discharge, 482 × 440 × 178 mm, 60kg, 6,000 cycles); 48V 100Ah telecom product page (4.8kWh, 43kg, 3U rack); 12V 100Ah product page (1,280Wh, 4S configuration, 100A continuous); 48V lithium battery price guide (cost per kWh and quote comparison); Wikipedia twenty-foot equivalent unit (20ft internal volume 33.2 m³); Wikipedia forty-foot equivalent unit (40ft high cube internal volume 76.3 m³); ICC trade finance and UCP 600 (letter of credit rules); Chinese New Year 2027 date (6 February); Golden Week holiday dates in China (1 to 7 October). Last updated 2026-11-08.
