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Look at the voltage value of the display to determine whether the battery is good or bad
Test DC12V battery:
Good condition: the 12 Volt charging system test is greater than 13V, and the battery is in good condition.
Normal: the 12V charging system test is between 9V-13V, the battery status is normal.
Defective or need to be charged: the 12 Volt charging system test is less than 9V under load, and the battery status is unqualified.
Test DC6V battery:
Good condition: When the display voltage is greater than 7V, it means the battery is in good condition.
Normal: When the display voltage is between 4.6V-7V, it means the battery is normal.
Defective or need to be charged: When the display voltage is low than 4.6V, and the battery status is unqualified.
This battery load tester is to provide with reference advice, these value ranges are not absolute, should depend on the battery situation(Battery usage time and whether is full charged test, etc.) Some batteries that are not fully charged, or used for a longer period of time, will be a little low on voltage under load and it is normal. It is enough for daily use to test battery and determine good or bad battery condition.
Note
When it is used, the coil will be hot and red, due to the protective coating, the first use may have an odor or smoke, this is normal.
Testing the health of the battery, state of charge. This battery tester can test batteries for cars, motorbikes, trucks, RVs, ATVs, SUVs, boats, yachts, lawnmowers, etc.
1. Question: Why has an odor or smoke on first use?
Answer: Don’ t worry about it. When it is used, the coil will be hot and red, due to the protective coating, the first use may have an odor or smoke, this is normal.
2. Question:Are the clamps to be removed and attached directly to the battery posts?
Answer: It is recommended that it can be attached directly to the battery for best results.
3. Question: Will I be able to use it to load test individual lithium cells?
Answer: yes, can try it.
4. Question: The battery voltage is slightly over 13 volts. Is it possible to test it with this device?
Answer: It works. Good batteries usually have a higher open circuit voltage. Most fully charged 12v will show 13v. It's a great small test.
6V 12V Battery Load Tester Alternator Analyzer Test Preparation
When testing batteries, operate in a well-ventilated area and operators are not allowed to smoke around them and check the battery casing for rupture damage.
Battery Analysis：
See the surface of the pointer in the Green Zone as well, the red zone, yellow zone is weak. Discharge test, read voltage to see negative detail.
Pointer Meter Display
LCD
Battery voltage
Stick out a mile
Copper Plated Alligator Clip
Copper plated alligator clip
Not easy to connect
Regardless of positive and negative poles
Circular Cooling Hole
Multiple circular cooling holes
Faster heat dissipation
Better detection effect
Steel case body
Durable and impact resistant
Shielding interference sources
More accurate detection
Rubber Handle
Rubber handle
Easy to use
Thickened Copper Wire
Use thickened pure copper wire
Cold resistance and heat resistance
Not easy to age
BobR
2025-08-19 11:38:57
For the non-professional, this is a good tool. I have multiple batteries in my golf cart and was concerned that one of them was faulty. Diagnosis included a need for a load test. Normally, I would pull a battery and take it to the nearest auto parts store for testing. I was not about to pull and haul four of them. At this price, I could hardly turn down the chance to try this tester on my own. It worked well. All of the batteries load tested just fine, and that is comforting to know. Be sure to read the directions. They include a caution regarding how long to place the load. Violate that caution, and you could damage the tool.
jim strickland
2025-08-17 15:32:03
battery load tester works well
Fenster45
2025-07-31 20:24:08
Looks like a 1980’s bargain bin Radio Shack product, but works quite well
Dennis Reed
2025-07-30 14:54:25
Easy to use, no problems.
salbador ruiz
2025-07-03 16:48:36
Just like the old school testers , no fancy bells and whistles just pure testing , your battery either works or it doesn’t
Customer
2025-06-02 13:41:21
Easy to use, durable, works well besides it reads slightly low but I know that so I just adjust for it. Great price.
Joebro
2025-05-22 10:31:15
Easy
Mama
2025-05-12 10:07:22
Husband ordered... said it works well.
Michel
2025-04-04 14:20:05
Un outil très simple à utiliser et très utile pour savoir l état de votre batterie
Customer
2025-03-23 15:27:43
Works well
Tomasi Delana
2025-03-14 14:49:22
Load testimg batteries
GDA
2025-02-24 14:52:37
Item arrived with instructions and works as it should.Tested all my batteries easily.Be sure to allow the unit to cool down between tests.10 seconds max when load testing.Great tool at a fair price.
Roger B
2025-02-08 14:23:37
Decent quality
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