Electrical Test & Measurement · Electrical Test Equipment
Ten-port bench tester for power banks, adapters and storage supplies, with a built-in electronic load, 20 V and 10 A per port, 200 W and a 10-inch touchscreen.
KS8661 ·
A power bank is a charger and a battery in one housing, and the port is where both are judged. The instrument that tests it therefore has to do two things at once: act as the device the port is trying to charge, and hold a load long enough to see whether the output stays inside its own specification.
This is a single-model bench instrument with ten output ports across four modules. It is built for power banks, adapters and storage supplies, at the stage where the assembly is complete enough to deliver power but not yet packed.
The tester and its touchscreen are two parts of one system: the screen is the operating surface, and the body carries the load, the switching and the port connectors. The rear panel groups the signal, serial, network, antenna and fan positions, with a grounding terminal and the AC inlet beside them, so the cabling stays at the back while the operator works at the front.
Each port carries its own load. When a product is connected, the instrument first acts as a sink and negotiates the charging protocol the product advertises, then closes the load in constant-current or constant-voltage mode and samples voltage and current at the port. Power is derived from the pair rather than measured separately.
That order matters. A power bank that reads correctly at no load can still fall out of regulation as soon as current is drawn, and a port that advertises a profile under no load may not hold it under a real one. Loading first and reading afterwards is the only way to see either.
Two mechanical details are handled in the test rather than by the operator. A CC lead can be inserted either way round and the instrument checks both, which removes a step that is easy to skip when a line is running. The D+ and D− lines are also checked in both orientations, which catches a cable assembled with the data pair reversed, a fault that would otherwise show up only as a product that charges slowly.
The first question is port count and layout. Ten ports suit a product with several outputs, or a bench that runs several units at once; a product with fewer ports does not need the extra capacity and will not use it.
The second is current per port. The load has to hold the highest current the product can deliver with enough headroom for the protection test, and the total across ports has to stay within what the unit can dissipate, since every port that is loaded at the same time adds heat.
The third is the protocol set. The standard list covers QC2.0, QC3.0, PD2.0, PD3.0 and PD3.1; AFC, FCP, SCP and SSCP are options and have to be declared at the order stage.
The fourth is how the results are recorded: export to a USB device for a bench that archives per-unit runs, or a connection to a line system through the serial, network or wireless interface. Send the port count, the current per port and the protocol list, and a configuration can be proposed against them.
The voltage range is the boundary that decides the application. At 20 V, this instrument covers products that output at battery-level voltages; a charger asked to deliver a higher voltage needs a different tester, and no option on this unit extends the range.
Current accuracy and voltage accuracy are quoted in the same form, with the second term expressed against full scale rather than against reading. That means the accuracy near the bottom of the range is set by the range, not by the reading, so a low-current test on a high-current port is the least favourable case and should be planned accordingly.
Everything is measured at the port, so the lead and the connector are inside the measurement. Remote sensing is provided to compensate for the lead drop, but it compensates for the cable, not for a poor contact inside the connector, which can add a resistance that changes with temperature. A fixture that has been used for a long time should be checked against a known load before its readings are trusted.
Every value below is taken from source documentation. Where a parameter is not stated in the available material it is marked as information required rather than estimated.
| Maximum test voltage | 20 VStandard |
|---|---|
| Maximum test current | 10 AStandard |
| Maximum test power | 200 WStandard |
| Voltage accuracy | ±(0.05% + 0.05 FS)Standard |
| Current accuracy | ±(0.05% + 0.05 FS)Standard |
| Voltage resolution | 0.5 mVStandard |
| Current resolution | 0.5 mAStandard |
| Load mode | CC or CVStandard |
| Remote voltage sensing | Supported, to compensate for lead lossStandard |
| Channel count | Four modules, ten portsStandard |
|---|---|
| Program steps | 100Standard |
| Stored files | 120Standard |
| Per-module port allocation | Not stated in the materialInformation required |
| Protocol detection | SupportedStandard |
|---|---|
| Protocol list | QC2.0, QC3.0, PD2.0, PD3.0 and PD3.1; AFC, FCP, SCP and SSCP optionalStandard |
| CC lead reverse-insertion test | Supported, without turning the connector by handStandard |
| D+ and D- polarity test | Supported, both orientationsStandard |
| AFC, FCP, SCP, SSCP | OptionalOptional |
| Protection modes | OCP, OVP, OPP and OTPStandard |
|---|---|
| Result export | Supported, to a USB storage deviceStandard |
| Host software | Supplied software for visual operation and network connection is referred to; whether it is included is not statedInformation required |
| Communications | RS-232C, LAN, WIFIStandard |
|---|---|
| Signal | Signal Output and Signal Input sockets on the rear panelStandard |
| USB | Front USB socket for data transferStandard |
| Rear panel | WIFI antenna, 9-pin RS-232, RJ45 LAN, four cooling fans, GND terminal, three-core AC inlet marked AC220-50Hz, fuse holderStandard |
| Mains inlet marking | AC220-50Hz, as printed beside the inletStandard |
|---|
| Dimensions | 487.6 mm wide, 181 mm high, 450 mm deepStandard |
|---|---|
| Weight | Not stated in the materialInformation required |
| Model | Configuration | Key ranges | Availability |
|---|---|---|---|
| KS8661 | Four modules, ten ports, built-in electronic load | 20 V, 10 A, 200 W per port | The only model described in the material |
Certifications are only published once a certificate copy can be produced, so this section is deliberately empty rather than populated with assumed approvals. Tell us which approvals your application requires and we will confirm what is available for this instrument.
The following are required for a complete specification but are not stated in the documentation supplied to us. They are listed rather than estimated:
The material describes four modules and ten ports, and the supplied photograph shows the sockets in two vertical groups of five, marked M1-0 to M1-4 and M2-0 to M2-4. How the ten ports are divided across the four modules is not stated, so the grouping should be confirmed before a fixture is designed.
The number of output ports on the product, the highest current any one port will deliver, and the protocols the product advertises. The optional AFC, FCP, SCP and SSCP protocols have to be declared at the order stage, since whether they are enabled is not something the instrument can be assumed to carry.
By range and port count. This unit stops at 20 V and 10 A with a 200 W maximum, which suits power banks and adapters that output at battery-level voltages. A charger that has to deliver more than 20 V needs a tester with a correspondingly higher voltage range, and the two are separate products rather than options on one.
Neither is stated in the material. The dimension drawing is titled as giving size and weight but shows dimensions only, and no calibration document is referred to, so both have to be requested with the quotation.
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