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The ANCEL BA101 is the better pick for beginners working on 12V vehicles because it covers 100-2000 CCA and needs no internal battery, while the GOOLOO ST5 suits anyone with 24V rigs thanks to true dual-system support. The BA101 weighs 5 oz against the ST5’s 1.67 lbs, and the ST5 adds a 2.4″ color screen the ANCEL doesn’t have.
- Choose the ANCEL BA101 if you only test 12V cars, trucks, boats, RVs, and ATVs — its 100-2000 CCA range and 4-in-1 protection against reverse polarity, shorts, overcurrent, and overvoltage cover that whole spread.
- Choose the GOOLOO ST5 if you work on 24V systems too — it handles 12V/24V in one tool and supports 10 battery standards including JIS, DIN, and SAE.
I compared these two on three things a beginner can actually check: voltage support, CCA range, and how the results are displayed. Everything here comes from the listed specifications, not from a bench test. The screen type and weight differences stood out right away.
🏆 Quick Picks — My Top Recommendations
Best Overall: ANCEL BA101
4.5 stars from 4,718 ratings and the #1 Best Seller in Battery Testers — the safest first pick for beginners — Check Price →
Runner-Up: GOOLOO ST5
True 12V/24V dual-system support with a 2.4″ color screen and green/red result indicators — Check Price →
Here’s how the ANCEL BA101 and the GOOLOO ST5 stack up side by side on the specs that actually matter for a beginner.
Full Specs Comparison
| Specification | ANCEL BA101 Car Battery T | GOOLOO ST5 Car Battery Te |
|---|---|---|
| Brand | ANCEL | GOOLOO |
| Model | ✅ BA101 | ST5 |
| Voltage | ✅ 12V | 12V/24V |
| Load Capacity | ✅ 100-2000 CCA | 100-2000 CCA |
| Power Source | Battery Powered | Battery Powered |
| Color | Red | Black |
| Item Weight | ✅ 5 ounces | 1.67 pounds |
| Battery Types | — | ✅ Flooded/AGM/GEL/EFB |
| Display Type | Digital | Digital |
| Functions | Charging & Cranking Analyzer | Cranking & Charging Analyzer |
| Vehicle Compatibility | Truck, Boat, RV, Marine | Truck, Motor, SUV, Boat |
| Style | Voltage | For cars, trucks, SUVs, RVs, boats, motorcycles |
The biggest split is system coverage: the GOOLOO ST5 handles both 12V and 24V, while the ANCEL BA101 is 12V only, so 24V owners have no real choice here.
Individual Product Breakdown
I focused on three things for each tester: how easy it is for a beginner to get a reading, what battery types and voltages it actually covers, and how the screen presents results. Both are solid, but they suit different buyers.
ANCEL BA101 Car Battery Tester
12V Only | 100-2000 CCA | 4.5 Stars (4,718 Ratings) | 5 oz | 12-Month Warranty
- Catch Battery Problems Early: Featured in two videos by Project Farm, a...
- Know the Real Condition: Don’t let inaccurate readings lead to costly...
- Fast, Clear, Hassle-Free Testing: The classic black-and-white screen...
I’d hand the BA101 to a beginner without hesitation. It reads State of Health, State of Charge, voltage, CCA, plus cranking and charging tests, and it powers straight off your vehicle’s battery so there’s nothing to charge. The black-and-white screen with white backlight stays readable in sunlight, and the 4-in-1 protection guards against reverse polarity, shorts, overcurrent, and overvoltage when you clamp wrong. The one real catch: it’s 12V only, so skip it if you own 24V gear.
✅ Pros
- #1 Best Seller in Battery Testers with 4,718 ratings at 4.5 stars
- 100-2000 CCA range covers cars, trucks, boats, RVs, and ATVs
- 4-in-1 protection against reverse polarity, shorts, overcurrent, and overvoltage
- No internal battery needed — draws power from the vehicle
❌ Cons
- 12V only — no 24V support
- Not for lithium batteries or 6V/8V systems
- Monochrome screen, no color good/bad indicators
GOOLOO ST5 Car Battery Tester
12V/24V Dual System | 100-2000 CCA | 2.4″ Color Screen | 1.67 lbs | Carrying Case
- 【12V & 24V Dual‑System Compatibility】One tool for all your...
- 【Complete 3-in-1 System Diagnosis】Get more than just voltage readings...
- 【Safe & Easy Operation】No sparks, no heat, no risk—even if you...
The ST5 is the pick if you want one tester for everything. It does true 12V/24V, so it covers cars, SUVs, trucks, RVs, boats, and heavy-duty vehicles, and its 2.4-inch color screen uses green for good and red for replace — about as beginner-friendly as readings get. The three modes (battery, cranking, charging) are clearly separated, and it supports CCA, CA, BCI, MCA, DIN, IEC, EN, SAE, JIS, and GB standards. The catch is the thin review base — only 3 ratings so far.
✅ Pros
- True 12V/24V dual-system support in one tool
- 2.4″ color screen with green/red good-or-replace indicators
- Supports 10 battery standards including JIS, DIN, and SAE
- Portable at 1.67 lbs with an included carrying case
❌ Cons
- Only 3 customer ratings so far — unproven long term
- Battery Test mode is 12V only; just cranking and charging do 24V
- Heavier at 1.67 lbs than the 5 oz ANCEL
Which One Should You Buy?
The right pick really comes down to what’s parked in your driveway and how much you value a clear screen. Both testers do the same core job well, so your situation decides it.
ANCEL BA101 Car Battery Tester is right for you if…
- You only own 12V vehicles and want a tester that powers straight off the battery with nothing to charge.
- You want the reassurance of 4,718 ratings at 4.5 stars and the #1 Best Seller spot in Battery Testers.
- You test cars, trucks, boats, RVs, ATVs, or mowers in the 100-2000 CCA range and want a 5 oz tool that fits anywhere.
GOOLOO ST5 Car Battery Tester is right for you if…
- You own both 12V and 24V vehicles and want one tool instead of two.
- You learn better from a 2.4″ color screen with green for good and red for replace.
- You work on batteries from different regions and need CCA, JIS, DIN, SAE, and GB standard support in one unit.
❌ Who Should Skip All of These?
If you’re testing lithium batteries, 6V or 8V systems, or motorcycles under 30Ah, neither of these is built for you. You’d be better off with a tester that explicitly lists those voltages and chemistries.
For the most common beginner — someone with a regular 12V car or truck who wants a fast, trusted reading — I’d go with the ANCEL BA101. If you need 24V coverage too, the GOOLOO ST5 is the one to pick.
Frequently Asked Questions
Which is better for beginners, the ANCEL BA101 or the GOOLOO ST5?
For a total beginner, I’d pick the ANCEL BA101. It has 4,718 ratings at 4.5 stars and holds the #1 Best Seller spot in Battery Testers, so you’re buying something thousands of people already trusted. The GOOLOO ST5 has a friendlier 2.4″ color screen with green/red indicators, but only 3 ratings so far. The BA101’s track record wins it for a nervous first-timer.
Is the GOOLOO ST5 worth it over the ANCEL BA101 if I only have 12V vehicles?
Honestly, no — not if every vehicle you own is 12V. The ST5’s main advantage is true 12V/24V dual-system support, and you’d be paying for capability you never use. The BA101 covers the same 100-2000 CCA range and the same Flooded, AGM, GEL, and EFB battery types on 12V. Save the ST5 for people who actually own 24V gear.
Does the ANCEL BA101 test 24V batteries?
No, the BA101 is 12V only. It supports a 100-2000 CCA range and works on cars, trucks, boats, RVs, ATVs, lawnmowers, golf carts, and motorbikes over 30Ah, but 24V is not on the list. If you need 24V, ANCEL points you to their BA101 PRO instead. This is exactly where the GOOLOO ST5 pulls ahead.
Can the GOOLOO ST5 test 24V batteries in every mode?
Not quite, and this trips people up. The ST5’s Battery Test mode is 12V only — it’s the Cranking Test and Charging Test that work on both 12V and 24V. So you get 24V coverage for starter and charging checks, but full battery condition analysis stays 12V. The ANCEL BA101 does all its tests on 12V, so neither is a pure 24V battery analyzer.
Which tester is easier to read in bright sunlight?
The GOOLOO ST5 wins this one. Its 2.4″ color screen uses green for good and red for replace, which is instantly understandable even in direct sun. The ANCEL BA101 uses a black-and-white screen with adjustable contrast and a white backlight, which stays readable but takes a second longer to interpret. For pure at-a-glance clarity, the color screen is the better pick.
Do either of these test lithium batteries?
No — neither one does. The ANCEL BA101 explicitly says it’s not for lithium batteries, non-12V systems (6V/8V/24V), or motorcycles below 30Ah. The GOOLOO ST5 is built around Flooded, AGM, GEL, and EFB lead-acid batteries. If you’re on lithium, you need a different tester entirely.
My Final Verdict
The ANCEL BA101 is my overall winner for beginners. It carries 4,718 ratings at 4.5 stars, holds the #1 Best Seller spot in Battery Testers, and covers the 100-2000 CCA range on 12V with a 4-in-1 protection system that forgives rookie mistakes. The GOOLOO ST5 is the runner-up, and it’s the better tool for anyone with 24V vehicles thanks to its true 12V/24V cranking and charging tests plus a 2.4″ color screen that’s easier to read.
If you’re on the fence, ask yourself one question: do I own anything 24V? If the answer is no, buy the ANCEL BA101 and don’t overthink it. If you own a 24V truck or boat, the GOOLOO ST5 earns its place.
WINNER: ANCEL BA101
- Catch Battery Problems Early: Featured in two videos by Project Farm, a...
- Know the Real Condition: Don’t let inaccurate readings lead to costly...
- Fast, Clear, Hassle-Free Testing: The classic black-and-white screen...
The pick for most beginners with 12V vehicles. It’s the #1 Best Seller with 4,718 ratings, runs off your vehicle’s battery, and has 4-in-1 protection for safe clamping.
RUNNER-UP: GOOLOO ST5
- 【12V & 24V Dual‑System Compatibility】One tool for all your...
- 【Complete 3-in-1 System Diagnosis】Get more than just voltage readings...
- 【Safe & Easy Operation】No sparks, no heat, no risk—even if you...
The right choice if you own both 12V and 24V vehicles. It adds a 2.4″ color screen with green/red indicators and 10 battery standard support, though it only has 3 ratings so far.
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