How to Select a Prismatic Battery Sorting Machine: A Buyer's Guide to Cell Grading Equipment

Cell sorting and matching play an important role in battery pack consistency before assembly. Differences in voltage, internal resistance, or capacity among series-connected prismatic cells can affect usable pack capacity, heat generation, and overall cycle life. Sorting and matching help manufacturers group cells with more consistent characteristics, supporting more consistent battery pack performance.

For battery manufacturers, the key purchasing decision is not simply whether to automate cell sorting, but which equipment configuration best fits their grading requirements, cell formats, and production workflow.

This guide uses two reference models - the 6-channel ACEY-PS6 and the 10-channel ACEY-PS10 - to explain which specifications matter, what to verify with a supplier, and which common purchasing mistakes to avoid. Prismatic cell sorting machines are available in other channel configurations, including 3-channel and 8-channel models. Some 3-channel and 6-channel models also feature a front-infeed / rear-outfeed layout. Although the examples in this guide focus on the ACEY-PS6 and ACEY-PS10, the selection principles apply more broadly. All model-specific specifications cited in this guide are based on the published data sheets for these two machines.

Two points are worth noting when comparing sorting speeds. First, if PPM on the PS10 means pieces per minute, its stated rate converts to approximately 600–720 pcs/h. However, the PS6 and PS10 figures should not be treated as directly comparable until the supplier confirms the test conditions, handling cycle, and throughput measurement method for each machine. Second, more channels provide more receiving groups, but do not necessarily mean higher throughput or better accuracy. These are separate specifications that should be evaluated independently.

1.1 Cell dimensions - a hardware boundary, not a software setting

Physical fixtures cannot be adjusted by software recipes alone, so the machine's published dimension range defines the cell formats it can handle without hardware modifications. The two reference models differ in their supported dimensions: the PS6 accepts cells as narrow as 12 mm, while the PS10 has a minimum width of 20 mm. Conversely, the PS10 supports cell heights down to 80 mm, compared with the PS6's minimum of 90 mm. Before ordering, check every current and planned cell format against the full specified range.

1.2 Channel count - size it from grading granularity

Channel architecture determines how many output groups a machine can handle. Prismatic cell sorting machines are available in different configurations, including 3-, 6-, 8-, and 10-channel models. The appropriate configuration depends on the required number of grading groups, reject handling, and the supplier's specific machine design. Confirm the available OK and NG bins for the exact model before ordering.

Fewer bins suit coarse quality splits, while more bins support finer grading. The PS10's four extra OK bins over the PS6 are worthwhile only if production requires more grading groups. Otherwise, the additional bins may go unused.

For configurations outside the two documented models, confirm bin counts, grading logic, and speed with the supplier. Ask whether thresholds can be configured independently for each group, whether voltage and internal resistance can be combined as grading criteria, and which bin receives a cell that passes voltage but fails resistance, including whether the result is recorded.

1.3 Control architecture and data management

The PS6's PLC with linear modules and the PS10's embedded industrial PC represent two maintenance realities: PLC skills are familiar to most plant electricians, while PC-based systems typically offer richer data handling screens. Judge them by delivered function, not brand of controller. When comparing quotations, check which data fields are recorded, what export formats exist, how results bind to scanned codes, what report functions ship as standard, and who can retrieve a cell's grading history by code. For any MES claim, confirm: whether the interface is inside the quoted price, which records transfer, real-time versus batch export, extra licenses or communication modules, and update and support terms. These details decide whether the machine slots into your quality system or fights it.

1.4 Measurement accuracy - instrument spec ≠ whole-machine performance

The PS6 can be configured with an optional IR tester; the PS10 ships a Hioki BT3562 as standard. Note the trap: a meter's datasheet accuracy is not a guarantee of the sorter's end-to-end result, which also rides on contact quality, fixture consistency, the measurement procedure, and threshold logic. Ask for the tester's ranges and applicable accuracy figures, whether voltage and resistance limits are set independently, how rejection is enforced, whether results attach to code records - and, most importantly, what acceptance test the supplier will run on the complete machine before handover. Request the instrument datasheet for the exact unit being supplied, not a family brochure.

1.5 Site conditions and utilities - the quiet commissioning killers

Check the datasheet against your actual room: the PS6 documentation calls for 5–35 °C ambient, 20–90% humidity, 0.5–0.6 MPa compressed air, 220 V at 50/60 Hz, floor loading up to 200 kg/m², direct grounding, and low electromagnetic interference, with noise ≤80 dB; the PS10 specifies ≥0.6 MPa air and about 1 kW input against a 2 kW installed rating. A non-conditioned warehouse can exceed the temperature ceiling in summer; an aging air line can sag below the pressure floor at peak demand. Do not confuse rated power with measured consumption unless the supplier provides data. Also reserve clearance around the unit - the PS10's reference footprint is roughly 1920 × 1600 × 1600 mm at about 350 kg, and that space must cover loading, bin changes, and maintenance access, not just the cabinet. A pre-installation site survey costs little and prevents delivery-day standoffs.

• Judging catalog peaks. Headline rates under ideal test conditions rarely equal shift output on your cells; normalize to sustained pieces per hour.
• Assuming the tester is in the box. When the IR meter is optional, an unspecified quote is a quote without a meter.
• Sizing to today's SKU only. Roadmap cells outside the envelope turn a good machine into a paperweight.
• Paying for idle bins. Unused OK channels buy nothing.
• Leaving the NG path undefined. Who empties the reject channel, and does each defect leave a record?
• Saving data nobody can pull. Stored results without export access satisfy no audit.
• Signing before a live changeover. Ask for a timed model switch with your own dimensions.

ACEY-PS6 (6 channels) - a fit for job shops and small-to-mid volume lines that change models often: simple changeover, a width range down to 12 mm for slim formats, and the option to add IR testing or MES only where a customer demands it. Verify sustained output against your shift plan before relying on the 1,000 pcs/h figure.

ACEY-PS10 (10 channels) - Suitable for production lines that require nine grading groups for more refined cell matching. It comes with a built-in Hioki BT3562 internal resistance tester and a barcode scanner, according to the stated configuration. Before ordering, confirm the definition and test conditions behind the 10–12 PPM rating, verify the included data-management functions, and ensure the installation space accommodates the machine's footprint.

Neither - if daily volume is a few dozen cells, a bench with a handheld IR meter and a spreadsheet remains the honest answer; automation earns its keep when consistency, records, or labor cost justify it.

Before ordering, get each of these in writing inside the quotation or contract:

1. Testing - supplied tester model, ranges, applicable accuracy; acceptance test method for the whole machine.
2. Grading - threshold configuration per channel, how voltage and IR criteria combine, NG handling and defect logging.
3. Data - recorded fields, export formats, code-to-result binding, MES scope, licenses or integration fees.
4. Performance - speed and changeover demonstrated on your actual cell formats, under agreed conditions.
5. Installation - utilities, space and access, spare parts, maintenance documents, support terms.

When selecting a battery sorting machine, choose the channel layout based on your grading requirements, confirm every cell format against the machine's dimensional range, treat metering and data capabilities as contract terms rather than brochure features, and survey the installation area before shipment. Compare the ACEY-PS6 and ACEY-PS10 against verified specifications and agreed acceptance criteria-not headline numbers alone.

The specifications in this article are based on information provided by ACEY. For further details or clarification on a specific configuration, please feel free to contact us.