When purchasing a battery tester, the following key points should be noted:
- Clearly identify the type of battery being tested
Confirm the battery types supported by the detector: Do they only support SLI batteries? Does it support regular lead-acid AGM、EFB、 Starting type lithium batteries (such as lithium iron phosphate starting batteries)? - Applicable battery voltage and capacity range of the detector
The common starting battery is 12V, but there are also 6V (for motorcycles) or 24V (for trucks). Ensure that the detector supports the voltage you are actually using.
Pay attention to the CCA (cold start current) range calibrated by the detector, which should cover the CCA value of your battery (such as 200~1200 CCA).
- Check whether the detection function meets the requirements
Basic functions: Voltage testing, CCA testing, internal resistance testing, State of Health (SOH) assessment, charging system diagnosis.
Advanced features: startup capability prediction, ripple testing, discharge recording, etc.
- Detection principle and accuracy
Most portable detectors use admittance or AC internal resistance methods, which are sufficient for starting batteries.
Attention: Do not mistakenly believe that “measuring internal resistance means measuring energy storage batteries”. The algorithm and benchmark curve are different and must match the battery type.
- Built in battery (if portable)
The user mentioned that the lithium battery in the product is also a starter battery, which means that the power supply battery of the detector itself belongs to the small capacity high rate type.
- Security and authentication
Equipped with reverse connection protection, overvoltage protection, and short circuit protection.
Compliant with safety standards such as CE and RoHS (export or industrial use require more attention).
In summary:
Before purchasing, confirm whether the battery you want to test is a “starter type” or an “energy storage type”, and then choose a handheld detector that is clearly labeled as supporting this type and has a suitable CCA range and voltage. At the same time, pay attention to safety protection, brand after-sales service, and your own power supply method.
