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WINAMOO is the better pick for DIY car repair because it carries both CE and UL certification and a 200-gram body, while FEAOXYO suits tighter spaces with a lighter 0.12 kg build. Both test lights cover a 3V-48V range at 0.1V resolution with a 96-inch spring wire and dual red/green polarity lights, so the split comes down to build and certification.
- Choose WINAMOO if you want a tester with both CE and UL certification — it lists CE and UL under specifications met, plus a 200-gram body.
- Choose FEAOXYO if you work in cramped spots and want a lighter tool — it weighs just 0.12 kg while still covering 3V to 48V at 0.1V resolution.
I compared these two test lights on voltage range, display resolution and certification. I also looked at probe design, wire length and body weight. My comparison is based on the listed specifications, not hands-on testing.
🏆 Quick Picks — My Top Recommendations
Best Overall: WINAMOO 3-48V Test Light
CE and UL certified with a 0.1V resolution display and 96-inch wire — Check Price →
Runner-Up: FEAOXYO Heavy Duty Tester
Lighter 0.12 kg body with the same 3-48V range and 0.1V resolution — Check Price →
Here are the specs I lined up side by side so you can see exactly where these two test lights match and where they split.
Full Specs Comparison
| Specification | WINAMOO Automotive Test L | FEAOXYO Heavy Duty Automo |
|---|---|---|
| Brand | WINAMOO | FEAOXYO |
| Voltage Range | ✅ 3V-48V | 3V-48V |
| Display Type | LED Digital | Digital LED |
| Power Source | Corded Electric | Corded Electric |
| Color | Black | Black |
| Item Weight | ✅ 200 Grams | 0.12 Kilograms |
| Dimensions | ✅ 11.1 x 4.2 x 1.4 in | — |
| Min Operating Voltage | — | ✅ 3 Volts |
| Polarity Indicator | Dual Color | Dual Polarity |
| Probe Material | Stainless | Stainless |
| Voltmeter | ✅ Yes | ✅ Yes |
| Circuit Tester | ✅ Yes | ✅ Yes |
| Alternate Size | 3V-120V | ✅ 5-90V |
Individual Product Breakdown
I looked at the same things for each test light: voltage range, display resolution, probe design, wire length, body weight and certification. Here is how each one stacks up for DIY work.
WINAMOO Automotive Test Light with 3-48V LED Digital Voltage Display
3V-48V | 0.1V resolution | Dual polarity lights | 96-inch spring wire | CE & UL
- 【PRECISE READOUTS & CLEAR DIGITAL DISPLAY】Bright LED display shows...
- 【QUICK DETECTION & EXTENSIVE USE】WINAMOO auto circuit tester helps...
- 【SHARP PROBE & ANTI-LOST PROTECTIVE SLEEVE】Sharp stainless steel...
I like this one because it does the basics right and adds certification on top. The 3V-48V range with 0.1V resolution gives me a clear voltage number, and the red/green polarity lights tell me instantly which way the circuit runs. The 96-inch spring wire and large crocodile clip make single-handed testing easy, and the anti-lost sleeve keeps the sharp stainless probe protected. The one downside is the 200-gram body, which is noticeably heavier than the FEAOXYO.
✅ Pros
- CE and UL certification listed under specifications met
- 0.1V resolution on a 3V-48V range for precise readouts
- 96-inch spring wire with large crocodile clip for one-handed use
- Anti-lost protective sleeve guards the sharp stainless probe
❌ Cons
- 200-gram body is heavier than the rival
- Tops out at 48V, so no high-voltage use
FEAOXYO Heavy Duty Automotive Test Light Circuit Tester
3V-48V | 0.1V resolution | Dual polarity lights | 96-inch spring wire | 0.12 kg
- INSTANT AND ACCURATE VOLTAGE READINGS: This professional digital test...
- AVOID COSTLY CONNECTION ERRORS: Stay safe and protect sensitive...
- BUILT TO SURVIVE THE BUSY WORKSHOPS: This electrical tester boasts a...
This one matches the WINAMOO on the core numbers — 3V-48V range, 0.1V resolution and the same 96-inch spring coil wire for reaching across the engine bay. What I noticed most is the weight: at 0.12 kg it feels lighter in the hand than the 200-gram WINAMOO, which helps on long jobs. The rugged ABS body and integrated anti-lost probe cover are handy, but it only lists UL certification, not CE.
✅ Pros
- Lighter 0.12 kg body for less hand fatigue
- Same 3V-48V range and 0.1V resolution as the winner
- 96-inch flexible spring coil wire reaches tight spots
- Integrated anti-lost probe cover keeps the tip safe
❌ Cons
- Only UL listed, no CE certification
- 48V ceiling limits it to standard auto systems
Which One Should You Buy?
The right pick comes down to how you’ll actually use the tester, not just the spec sheet. I’d match it to whether certification matters more to you or a lighter tool in the hand does.
WINAMOO Automotive Test Light is right for you if…
- You want a tester that lists both CE and UL certification for peace of mind.
- You’re checking 3V-48V systems and want the 0.1V resolution readout on a car, truck or SUV.
- You like a large crocodile clip for single-handed testing across a 96-inch wire.
FEAOXYO Heavy Duty Automotive Test Light is right for you if…
- You want a lighter 0.12 kg tool for long sessions under the hood.
- You work on a range of vehicles — car, truck, RV or boat — and need the 96-inch coil wire to reach.
- You’re fine with UL-only certification and just need 3V-48V readings at 0.1V resolution.
❌ Who Should Skip All of These?
If you need to test circuits above 48V, neither of these will do it — you’d need a multimeter or a higher-rated tester. These also aren’t a substitute for a full digital multimeter if you need resistance, continuity or current readings.
For most DIYers, I’d go with the WINAMOO because the CE and UL certification plus the 200-gram build give it the edge. The FEAOXYO is a solid alternative if a lighter tool matters more to you.
Frequently Asked Questions
Which is better for DIY, WINAMOO or FEAOXYO?
I’d give the edge to the WINAMOO for most DIYers because it lists both CE and UL certification, while the FEAOXYO only lists UL. Both cover the same 3V-48V range at 0.1V resolution with a 96-inch spring wire, so the certification is the real tiebreaker. The FEAOXYO is the better pick if you want a lighter tool at 0.12 kg versus the WINAMOO’s 200 grams.
Do WINAMOO and FEAOXYO have the same voltage range?
Yes, they’re identical here — both test from 3V to 48V with 0.1V resolution. That means both handle standard 12V and 24V automotive systems and give you the same readout precision. Neither one goes above 48V, so high-voltage work is off the table for both.
Is the WINAMOO worth it over the FEAOXYO?
For me, yes — the extra CE certification alongside UL is worth having if you care about that spec. The trade-off is weight: the WINAMOO is 200 grams while the FEAOXYO is 0.12 kg. If you’re doing long jobs and a lighter pen matters more than the extra certification, the FEAOXYO makes more sense. Check current price on Amazon for both before deciding.
Which test light is lighter, WINAMOO or FEAOXYO?
The FEAOXYO is the lighter one at 0.12 kg, compared to the WINAMOO’s 200 grams. That difference is noticeable if you’re holding the tester for extended periods under the hood. If hand fatigue is a concern on long jobs, I’d lean toward the FEAOXYO.
Do both testers have polarity indicators and a 96-inch wire?
Yes to both. WINAMOO and FEAOXYO each have dual-color polarity lights — red for positive and green for negative — and a 96-inch flexible spring wire. That long wire lets you clip to a single ground point and still reach across the engine bay on a car, truck, RV or boat.
Can I use either tester on a 24V truck system?
Both handle it, since their range runs from 3V up to 48V. That covers 12V and 24V automotive systems comfortably with headroom to spare. Just don’t push either one past 48V, because that’s the ceiling on both models.
My Final Verdict
I’m picking the WINAMOO as the overall winner for DIY work because it carries both CE and UL certification, while the FEAOXYO lists only UL. Both match on the core numbers — a 3V-48V range at 0.1V resolution — so that extra certification is what tips it for me. The runner-up FEAOXYO is best for anyone who wants a lighter tool, since its 0.12 kg body beats the WINAMOO’s 200 grams and it still gives you the same 96-inch spring wire.
If you’re on the fence, decide on two things: do you value CE plus UL certification, or a lighter pen in your hand? Pick certification and go WINAMOO; pick lighter weight and go FEAOXYO. Either way you get the same 3V-48V range and 0.1V resolution.
WINNER: WINAMOO 3-48V Test Light
- 【PRECISE READOUTS & CLEAR DIGITAL DISPLAY】Bright LED display shows...
- 【QUICK DETECTION & EXTENSIVE USE】WINAMOO auto circuit tester helps...
- 【SHARP PROBE & ANTI-LOST PROTECTIVE SLEEVE】Sharp stainless steel...
Best for DIYers who want CE and UL certification backed by a 0.1V resolution display and a 96-inch wire. It’s the more complete pick on paper.
RUNNER-UP: FEAOXYO Heavy Duty Tester
- INSTANT AND ACCURATE VOLTAGE READINGS: This professional digital test...
- AVOID COSTLY CONNECTION ERRORS: Stay safe and protect sensitive...
- BUILT TO SURVIVE THE BUSY WORKSHOPS: This electrical tester boasts a...
Best for anyone who wants a lighter 0.12 kg tool for long jobs. Same 3V-48V range and 0.1V resolution, just UL-only certification.
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