ORDERING

How Ordering Works Here: Checkout Items and Quoted Projects

Boards, cables and accessories check out directly. Kits, cabinets and anything configured against a site go through a written quotation. The two paths fail in different ways, so it is worth knowing which one you are on.

Tell the two paths apart first

A product page that shows a price and a configuration selector is a checkout item: what you select is what is charged and shipped. A product page that asks for an inquiry is a quoted item, because destination, capacity, protocol or project scope moves the price enough that no published figure would be honest.

On quoted items the written quotation is the binding scope. Anything it does not list -- cells, breakers, site cabling, installation, commissioning -- is not in it.

Fix the configuration before paying, not after

On a multi-option product the selected option is the order. Series count, continuous current, balance current and any bundled display are all decided by that selection, and changing it after payment means cancelling and re-placing rather than editing.

Confirm the series count against the pack you are building and the continuous current against the inverter rating rather than the battery capacity, because that is the pairing that most orders get wrong.

Shipping depends on the destination for the three kits

The battery kit, the 6U battery kit and the high-voltage kit are bulky and are quoted on a destination rule. Everything else in the catalog -- BMS boards, displays, monitors, communication modules and cables -- currently ships free worldwide.

  • European Union destinations: kit shipping is free
  • United States, Southeast Asia, Japan, South Korea and the listed Middle East markets: a flat USD 150 per order
  • Anywhere else: the kits need a manual freight quote and cannot be paid for online
  • A mixed cart containing any of the three kits follows the kit rule

The currency you are charged in

The catalog is priced in USD and USD remains the reconciliation basis. Buyers in the twenty euro-area countries are billed in EUR instead, because iDEAL, Bancontact, eps, Przelewy24, Trustly and Multibanco only become available on a euro order.

EU countries that have not adopted the euro -- Bulgaria, Czechia, Denmark, Hungary, Poland, Romania and Sweden -- stay on USD. The euro figure shown in the checkout summary is the figure that will be charged.

Distributor and project quantities

For a quantity or a project, send the model codes and quantities, the destination country, the pack or system architecture, the inverter or PCS involved, and the date the goods are needed on site. A request with those five items comes back as a quotation; a request without them comes back as a question.

Questions this raises most often

Why do some products show a price and others ask for an inquiry?

Priced products are checkout items where the selected configuration is the order. Inquiry products depend on destination, capacity, protocol or project scope, so they are quoted in writing.

What does shipping cost?

The three enclosure kits ship free to the EU, cost a flat USD 150 to the United States, Southeast Asia, Japan, South Korea and the listed Middle East markets, and need a manual freight quote elsewhere. Other products currently ship free worldwide.

Which currency will I be charged in?

Euro-area buyers are charged in EUR so that local bank payment methods are available; everyone else is charged in USD. The amount shown in the checkout summary is the amount charged.

Can a configuration be changed after payment?

Not by editing the order. The selected option is what was charged and picked, so a change means cancelling and re-placing.

Take it to a part number

Ratings vary between codes that read almost the same, so settle the decision here and then confirm the figures on the product page for the exact code.

ENGINEERING NOTES

Settle the decision, then pick the part

Each note works through one decision end to end. Where a note and a product page disagree, the product page and the written quotation are the ones that bind.
SOURCE CHECKS

Check a JKBMS source

Check a JKBMS listing against what a reseller cannot restate: the four segments of the model code, the version the board reports itself, the visible port set, and a quotation that names its own exclusions.

Read guide
NAME TO PART

From brand name to part

All four spellings return the same hardware, so none of them narrows anything. This maps the term you searched to the artefact you were actually after: a model code, a manual, a firmware note or a cable.

Read guide
ORDERING

How ordering works

Two order paths run on this catalog. Work out which one a product uses, what shipping costs to your destination, which currency you will be charged in, and what has to be fixed before payment.

Read guide
ENCLOSURE DOCS

Battery box documents

Find the JKESS enclosure document that matches the format you were shipped, and work out the four cell measurements an enclosure manual assumes you already checked.

Read guide
PEAK SHAVING

Sizing peak shaving

Work peak shaving out of interval data: find the billing demand window, measure the energy above the threshold, size kW and kWh separately, and stop the recharge from setting the next peak.

Read guide
THERMAL

Air or liquid cooling

Estimate what a battery cabinet actually has to reject, judge the design on cell-to-cell temperature spread rather than average temperature, and price in what each cooling system costs to keep working.

Read guide
BMS ARCHITECTURE

What a BMU is

BMU means different things in different datasheets. Establish what a specific controller does from its I/O list, count units from channels rather than from kWh, and find where the interlock loop really terminates.

Read guide
SOURCING

Comparing ESS quotes

Normalise C&I ESS quotations before comparing price: usable against nameplate energy, what the warranty actually measures, the line items that fall outside the scope, and who owns the integration boundary.

Read guide
APP AND BLUETOOTH

JKBMS app and Bluetooth

Connect the JKBMS app over Bluetooth, understand pairing behaviour and permissions, and work through the connection failures reported most often.

Read guide
RS485 AND CAN WIRING

JK BMS RS485 and CAN wiring

Identify the RS485 and CAN ports on a JK BMS, verify the pinout against the manual for your model, and avoid the wiring mistakes that damage a port.

Read guide
FIRMWARE AND PARAMETERS

JKBMS firmware and parameters

Understand how JKBMS firmware versions affect available parameters, what to record before changing settings, and how to avoid an unrecoverable configuration.

Read guide
FAMILY TABLE

BD, PB, B1A and B2A side by side

One table showing what each family is built around, so a shortlist takes a minute instead of a browse.

Read guide
ENCLOSURE FIT

Fitting cells into an enclosure kit

Measure the cells before shortlisting a box: stack length with compression, height over the terminals, mass and rack loading.

Read guide
BOARD SELECTION

Narrowing the catalog to one code

Work from the pack and the inverter rating down to a handful of codes instead of browsing the list.

Read guide
BD OR PB

Which family the project needs

Local monitoring or an inverter protocol link. That question decides the family before anything else does.

Read guide
BALANCE CURRENT

How much balancing a pack needs

Balance current is a rate. Match it to how fast the pack drifts and how much idle time it has to recover.

Read guide
BUS CHOICE

CAN or RS485 for the link

The device at the far end decides the bus. Confirm pinout, bitrate and protocol profile before buying a cable.

Read guide
HIGH-VOLTAGE

Where contactor authority sits

Split responsibilities between module slaves and the cluster master, and find what nothing in the design owns yet.

Read guide
PROJECT INPUTS

What to fix before requesting a cabinet quote

The decisions that have to be settled first, and the ones that can safely stay open until the design review.

Read guide