
About TopDiag
TopDiag is designed for both Mechanic and DIYers.

Car batteries usually last three to five years but can die suddenly. Even if your battery appears charged, it could be weak. Warm weather and regular driving can conceal this, but cold temperatures or neglect can lead to starting issues. It's crucial to get a battery test with BT300 to be sure.
CAR BATTERY TESTER
NO | With Printer | YES |
20-2000 CCA | CCA Range | 20-2000 CCA |
NO | Relay Tester | YES |
10AH-300AH | Battery Range | 10AH-300AH |
NO | With Printer | NO |
20-2000 CCA | CCA Range | 100-2000 CCA |
NO | Relay Tester | NO |
10AH-300AH | Battery Range | 30AH-300AH |
NO | With Printer | NO |
20-2000 CCA | CCA Range | 100-2000 CCA |
NO | Relay Tester | NO |
10AH-300AH | Battery Range | 30AH-300AH |

As a safe and reliable car battery tester, it features safety mechanisms like reverse polarity and overload protection, and is known for its durability and compliance with industry standards, all contributing to its safety and reliability.
Why do my test results change every time I test?
Changing test results can be caused by inputting incorrect battery parameters, such as the battery type, CCA value, or testing under different conditions.
Does it works for golf cart battery ?
Yes, but not for 6V, AAA batteries and lithium battery.
Does this product come with a battery charger included?
No, The product does not come with a wall charger, as it is powered directly by a 12V vehicle battery.
Does BT300 car battery tester can test Alternator?
Yes, it can test 12V Alternator but not 24V Alternator.

Car batteries usually last three to five years but can die suddenly. Even if your battery appears charged, it could be weak. Warm weather and regular driving can conceal this, but cold temperatures or neglect can lead to starting issues. It's crucial to get a battery test with BT300 to be sure.
CAR BATTERY TESTER

As a safe and reliable car battery tester, it features safety mechanisms like reverse polarity and overload protection, and is known for its durability and compliance with industry standards, all contributing to its safety and reliability.
Why do my test results change every time I test?
Changing test results can be caused by inputting incorrect battery parameters, such as the battery type, CCA value, or testing under different conditions.
Does it works for golf cart battery ?
Yes, but not for 6V, AAA batteries and lithium battery.
Does this product come with a battery charger included?
No, The product does not come with a wall charger, as it is powered directly by a 12V vehicle battery.
Does BT300 car battery tester can test Alternator?
Yes, it can test 12V Alternator but not 24V Alternator.
About TopDiag
TopDiag is designed for both Mechanic and DIYers.


























































