Charger & Power Bank Testing FAQ充电器与充电宝检测 · 常见问题

Even a certified design drifts on the production line — component tolerances, solder joints and firmware can push a unit out of spec. A comprehensive tester catches under-voltage, over-current, a wrong protocol handshake and excess ripple that a visual check misses, protecting your brand from returns and safety complaints. 即便设计已认证，量产线上仍会因元器件公差、焊点和固件出现偏差。综合测试仪能抓出欠压、过流、协议握手错误和纹波超标，这些是目检发现不了的，能有效避免退货和安全投诉。

It checks the electrical essentials: output voltage, current and power; fast-charge protocol handshake (PD, QC, PPS and brand protocols); no-load and full-load regulation; and ripple/noise. Models such as GTI6031H also log every result for traceability. 测的是电气核心项：输出电压/电流/功率、快充协议握手（PD、QC、PPS 及品牌协议）、空载与满载调整率、纹波噪声。像 GTI6031H 这类机型还会逐条记录结果，便于追溯。

Compare the actual negotiated power and protocol against the labelled spec. A genuine unit delivers stable voltage under load and completes the correct PD/QC handshake; a fake often collapses under load or reports the wrong profile. A tester makes this measurable instead of guesswork. 把实测的协商功率和协议跟标称规格对比。正品带载电压稳定、能完成正确的 PD/QC 握手；假货往往一带载就垮，或报错的协议档位。用测试仪就能量化，不再靠猜。

For global sales, look for CE (EU), FCC (US), UL or ETL (safety), RoHS (materials) and USB-IF certification for PD compliance. Our testers verify the electrical and protocol behaviour so you can confirm a unit matches its claimed spec before shipment. 做全球销售要看 CE（欧盟）、FCC（美国）、UL 或 ETL（安全）、RoHS（材质），以及 PD 合规的 USB-IF 认证。我们的测试仪验证电气与协议表现，让你在出货前确认产品与标称一致。

Our comprehensive testers support USB PD 3.2, PPS, Qualcomm QC, and full coverage of major brand protocols including Huawei (SCP/FCP), Samsung (AFC), OPPO/OnePlus (VOOC/SuperVOOC) and VIVO. Tell us which protocols your products use and we will confirm the exact model. 综合测试仪支持 USB PD 3.2、PPS、高通 QC，以及华为（SCP/FCP）、三星（AFC）、OPPO/一加（VOOC/SuperVOOC）、VIVO 等主流品牌协议全覆盖。告诉我你的产品用哪些协议，我帮你确认具体机型。

Yes. Our high-power models cover up to 240W with PD 3.1 EPR support, so you can test the latest laptop and high-wattage GaN chargers — not just phones. 可以。我们的高功率机型支持到 240W 并兼容 PD 3.1 EPR，能测最新的笔记本和高功率氮化镓充电器，不只是手机。

Read more: Why old ATE can't test 140W

No. USB Power Delivery negotiates voltage and current between charger and device during the handshake, so a 100W charger only delivers what the phone requests (typically 18–45W). The rated wattage is a ceiling, not a forced output — using a higher-rated charger on a phone is safe and common. 不会。USB PD 在握手时由充电器和设备协商电压电流，100W 充电器只会给手机所需的功率（通常 18–45W）。标称瓦数是上限，不是强制输出，用大功率充电器给手机充电是安全且普遍的做法。

Some heat is normal — conversion always loses a little energy as heat, and GaN chargers stay cooler than silicon ones. If a charger gets very hot, smells, makes noise or deforms, stop using it; a tester can confirm whether its thermal and protection circuits are working. 有点热是正常的——转换总会损耗少量能量发热，氮化镓比硅方案更凉。但如果充电器烫得厉害、有异味、异响或变形，应立即停用；测试仪可确认其温控和保护电路是否正常。

GaN (gallium nitride) runs cooler and more efficiently than silicon at the same power, which reduces heat stress. But safety ultimately depends on build quality and certifications (CE/FCC/UL/RoHS) — a certified GaN charger from a reputable maker is safe, while a cheap uncertified unit is not, GaN or not. 相同功率下氮化镓比硅更凉、更高效，减少热应力。但安全最终取决于做工和认证（CE/FCC/UL/RoHS）——正规品牌认证过的氮化镓是安全的，廉价无认证的产品则不安全，跟是不是氮化镓无关。

A benchtop unit tests one device at a time for engineering, incoming inspection or small batches. An ATE (automated test equipment) system integrates into the line to test many units automatically with fixtures, throughput tracking and MES data upload — built for volume. 台式机一次测一台，用于研发、来料检或小批量。ATE（自动化测试设备）系统集成到产线，借助工装自动测大量产品，带产能统计和 MES 数据上传，是为量产而生的。

Match it to your product type (charger, power bank, adapter, power strip), the protocols you need, your target throughput, and whether you need inline automation. Send us your product and daily volume and we will recommend a configuration — single-unit MOQ is available. 按产品类型（充电器、充电宝、适配器、排插）、所需协议、目标产能和是否需要在线自动化来选。把你的产品和日产量发给我们，我们给配置建议——单台起订也支持。

Read more: How to size an ATE system

Yes. Most models support an external-trigger port to start/stop from your fixture or PLC, and results can be logged and uploaded for MES traceability. Confirm the exact interface for your model. 可以。多数机型带外部触发口，可由你的工装或 PLC 启停，测试结果可记录并上传做 MES 追溯。具体接口按机型确认。

Yes. Our power-bank testers verify capacity, discharge curves, protection circuits and charge behaviour, alongside the charger testers. We cover the full fast-charging product range. 能。我们的充电宝测试仪验证容量、放电曲线、保护电路和充放电表现，与充电器测试仪配套。快充产品线我们全覆盖。

Read more: Power bank protection testing

Single-unit orders are accepted — buy exactly what you need for evaluation, a bench, or a full line. We also provide remote bilingual (EN/CN) technical support throughout the product lifecycle. 支持单台起订——评估、单工位或整线，按实际需求买即可。产品全生命周期还提供中英双语远程技术支持。

Start by swapping one variable at a time. Try the same charger with a known-good cable, and the same cable with a known-good charger. A tester makes this measurable: it reports the PD Source_Capabilities a charger advertises and the actual voltage/current the sink negotiates. If the charger's advertised profile is correct but negotiation collapses only with a specific cable, the cable (often a weak or missing E-Marker) is the culprit; if it fails with every cable, the charger's PD controller or firmware is the suspect. 一次只换一个变量。用一根确认好的线配同一个充电器，再用同一根线配另一个确认好的充电器。测试仪能把这量化：它读出充电器广播的 PD Source_Capabilities，以及设备实际协商到的电压电流。如果充电器广播的档位正常、但换了某根线就协商失败，问题在线（通常是 E-Marker 弱或缺失）；如果每根线都失败，嫌疑在充电器的 PD 控制芯片或固件。

Read more: PD handshake debug checklist

A multi-port charger has a fixed total power budget. When you plug in more devices, it shares that budget across the active ports through internal power allocation, so one port may drop from, say, 65W to 45W or 30W. This is normal behaviour, not a fault. A tester shows the per-port negotiated power so you can verify the allocation matches the spec sheet, and catch units that over-allocate or fail to re-negotiate when a device is unplugged. 多口充电器的总功率预算是固定的。插的设备越多，它就在各口之间分配这个预算，于是某个口可能从 65W 掉到 45W 或 30W。这是正常行为，不是故障。测试仪能显示每个口实际协商到的功率，用来核对分配是否符合规格书，也能揪出那些分配超量、或拔掉设备后不会重新协商的机型。

Read more: Testing multi-port chargers

Read the E-Marker, don't trust the label. The chip is powered over the VCONN pin and reports its real current rating (3A or 5A), VBUS withstand voltage (20V or 50V) and whether it supports EPR. A 240W cable must declare 50V/5A in the E-Marker; if it only declares 20V/5A it is a 100W cable regardless of what the packaging says. A tester that queries the E-Marker (SOP') shows the declared values directly, so you can confirm a supplier's claim instead of guessing. 读 E-Marker，别信标签。芯片由 VCONN 供电，会报告真实电流能力（3A 或 5A）、VBUS 耐压（20V 或 50V）以及是否支持 EPR。240W 线必须在 E-Marker 里声明 50V/5A；如果只声明 20V/5A，那它本质是 100W 线，包装怎么写都没用。能读取 E-Marker（SOP' 报文）的测试仪会直接显示声明值，让你核实供应商的说法，而不是靠猜。

Read more: The cable decides your PD test

Ripple and noise are the small AC residuals on a DC output, set by the switching converter and output filtering. Causes include a weak output capacitor, poor layout, or operating near the edge of the design's load range. A tester measures ripple under no-load, rated load and overload; a jump in ripple at high load points to the output stage or filtering, while ripple present even at light load suggests the primary switching stage. Compare against the spec limit in the datasheet — if you need the exact pass/fail number, see the product datasheet. 纹波噪声是直流输出上叠加的小交流成分，由开关变换器和输出滤波决定。成因包括输出电容偏弱、layout 不佳、或工作在设计负载范围的边缘。测试仪会在空载、额定负载、过载下分别测纹波；高负载时纹波骤升指向输出级或滤波，轻载就有纹波则更像初级开关级。具体合格限值以规格书为准——需要精确判据请看产品 datasheet。

Measure, don't read the label. Discharge the bank at a defined current (industry tests often use 0.2C or 1C) down to its cut-off voltage and calculate capacity as current × time. A tester does this automatically and logs the curve. If the measured capacity is well below the rated mAh, the label is overstated — a common issue with low-cost units. 实测，别看标签。以规定电流（行业常用 0.2C 或 1C）把充电宝放到截止电压，容量=电流×时间。测试仪自动完成并记录曲线。如果实测容量明显低于标称 mAh，就是虚标——廉价产品里很常见。

Read more: Your 20000mAh power bank

Cycle life is measured by repeatedly charging and discharging the bank (typically at 0.2C–1C) and recording how much capacity remains after a set number of cycles, e.g. 300 or 500. A tester automates the loop and plots capacity retention, so you can verify a cell meets its claimed cycle rating instead of taking the number on the box. 循环寿命是反复给充电宝充放电（通常 0.2C–1C），记录若干次循环（如 300 或 500 次）后还剩多少容量。测试仪自动跑循环并画出容量保持率曲线，让你核实电芯是否真达到标称循环寿命，而不是信包装上的数字。

Protection circuits are checked by forcing the fault condition under test: charge past full to confirm overcharge cutoff, short the output to confirm short-circuit protection trips, and discharge below the limit to confirm over-discharge cutoff. A tester can drive these conditions safely and log whether each protection engaged within spec. Never trigger these by hand on an unprotected cell — it is a safety risk. 保护电路是靠"制造故障"来检验的：充过满看是否切断（过充）、把输出短路看保护是否动作（短路）、放到低于下限看是否切断（过放）。测试仪能安全地驱动这些条件并记录每项保护是否按规格生效。切勿在手工作弊式地直接对无保护电芯做这些——有安全风险。

A tester and a certification lab do different jobs. Certification (CE/FCC/UL/CCC, etc.) is issued by an accredited body against standards like IEC/EN 62368-1 (safety), FCC Part 15 (EMC, US) or GB 4943.1 / GB 31241 (China). A tester does not grant certification — it verifies the electrical and protocol behaviour of your units so you can confirm they meet the spec before sending samples to the lab, catching non-compliant batches early and cutting re-test cost. 测试仪和认证实验室职责不同。认证（CE/FCC/UL/CCC 等）由认可机构依据标准颁发，如 IEC/EN 62368-1（安全）、FCC Part 15（美国 EMC）或 GB 4943.1 / GB 31241（中国）。测试仪不发认证——它验证你产品的电气与协议表现，让你在送实验室前先确认达标，尽早揪出不合格批次、省下重复测试的费用。

USB-IF is the organisation that owns the USB standard and licenses the USB logo; USB-IF certification means a product passed their compliance program. Protocol testing with our equipment verifies that a charger actually implements PD/PPS/QC correctly — the electrical and handshake behaviour behind the logo. The two are complementary: testing proves your unit behaves right; certification is what lets you use the mark. We test behaviour; an authorised USB-IF lab issues the certificate. USB-IF 是 USB 标准的所有方、也是 USB 标志的授权机构；通过它的合规计划才算 USB-IF 认证。用我们的设备做协议测试，是验证充电器是否真的正确实现了 PD/PPS/QC——也就是标志背后那套电气与握手行为。两者互补：测试证明你的产品"行为正确"，认证让你"能用标志"。我们测行为，USB-IF 授权实验室发证书。

They overlap on safety but differ by region: the US relies on FCC (EMC) plus voluntary UL 62368-1 safety; the EU requires CE with the Low-Voltage and EMC directives (often EN IEC 62368-1); China makes CCC mandatory with GB 4943.1 and GB 31241 for batteries; Japan uses PSE and Korea uses KC. A tester helps you confirm the electrical spec is identical everywhere; the paperwork and local marks are what change per market. 各地安全底线上有重叠，但要求因地区而异：美国靠 FCC（EMC）加自愿性的 UL 62368-1 安全；欧盟要 CE（低电压与 EMC 指令，常引用 EN IEC 62368-1）；中国 CCC 强制，电池另看 GB 31241；日本用 PSE、韩国用 KC。测试仪帮你确认各地的电气规格其实一致；真正随市场变的是文书和本地标志。

UPH ≈ 3600 ÷ (test time per unit + load/unload time). A single-port test of a charger might take 15–40 s depending on how many protocols you verify; an ATE with multiple stations tests several units in parallel. Build the estimate from your real test sequence, not a catalogue number — our team can model it from your product and daily volume. UPH（每小时产量）≈ 3600 ÷（单台测试时间 + 上下料时间）。充电气单口测试约 15–40 秒，取决于你验多少协议；多工位的 ATE 能并行测多台。请基于你真实的测试序列来算，而不是看目录上的某个数——把你的产品类型和日产量给我们，我们帮你建模。

Read more: How to size an ATE system

Changeover cost is lost UPH during the time the line is stopped to swap fixtures, reconfigure the tester and re-run the first-article check. On a line doing thousands of units a day, even 20 minutes lost is real money. Cutting it comes down to quick-swap fixtures, saved test recipes per model, and ATE software that loads a recipe in seconds — the things we design the line system around. See our ATE guide on model switching. 换线成本 = 产线停摆期间损失的 UPH：换工装、重配测试仪、重跑首件检查都要时间。一条日产几千台的线，哪怕停 20 分钟也是真金白银。缩短靠三点：快换工装、按型号存好的测试配方、以及能在几秒内加载配方的 ATE 软件——这正是我们产线系统的设计重点。详见我们关于换型切换的 ATE 指南。

Traceability starts with logging every unit's test result against a unique ID (serial or batch). When a parameter fails, the record shows which station and which step caught it, so you can see whether defects cluster at soldering, firmware or incoming parts. Models such as GTI6031H log each result for exactly this; feeding that data to MES turns raw pass/fail into actionable yield analysis. 追溯从"给每台产品测结果绑定唯一 ID（序列号或批次）"开始。某项参数失败时，记录会显示是哪个工位、哪一步拦下的，于是你能看出不良是集中在焊接、固件还是来料。像 GTI6031H 这类机型就是为逐条记录而设计；把数据喂给 MES，就能把原始的合格/不合格变成可行动的良率分析。

Yes — the entry bench tier covers exactly this. Models such as GTI6024H are compact single-unit testers built for R&D validation, incoming inspection and small-batch QC, with the basic protocol set at a lower price than the comprehensive and multi-channel models. Tell us your product and monthly volume and we will point to the right tier; single-unit MOQ applies across the range. 有——入门台式档就是干这个的。像 GTI6024H 这样的紧凑单台机型，面向研发验证、来料检和小批量 QC，覆盖基础协议集，价格比综合机和多通道机型低。把你的产品类型和月产量告诉我们，我们帮你定位合适的档位；全系列都支持单台起订。

Yes. Send us your charger, power bank or adapter and we will run a sample test on our equipment and share the measured data with you, so you can see how your product behaves before committing to a purchase. Contact us with your product details to arrange it. 可以。把你的充电器、充电宝或适配器寄来，我们用设备做一轮样品测试，并把实测数据发给你，让你在下单前先看清产品表现。把产品信息发给我们即可安排。