1. Storage battery tester is used for activated style lead-acid storage battery, along with checking battery life time and the following conditions of the battery, starting up, charging, and electrical loading. 2. With great design, easy operation, precise reading, complete functions, this tester supply the readings by a large LCD and hints by sound and light when testing. 3. Precise circuit and strong digital processing unit make it complete collection of a series of complicated data and figure out every test data. 4. Storage battery tester strengthens input protection inside , in order to prevent such situations as polar reversal connection , over-high voltage input, poor contact of the test clamps and so on. That makes sure safer and more convenient when testing. 5. Anti-slip rubber sleeve provide a safe operate condition MODEI:DY2015A Battery type:Lead-acid battery Battery voltage:12/24V Battery range:100-1700CCA Voltage range:DC 9-35V Battery Internal Resistance:0-99m Battery Status of Health(SOH):0-100% Battery Status of Charge(SOC):0-100% Operating temperature:-18-50 Operating Language:English Testing method:4-wire Kelvin test connection Display Battery Internal Resistance:Display ohms Display Battery Voltage:Display volts Display Battery condition:Good/ok/attention/replace Ah Input Quick Test:yes Maximum Load Test:yes(On car) Engine Cranking Load Test:yes Star-up Load Test:yes Maximum Load Test:yes Charging system Test:yes Display Battery Status of Health(SOH):yes Reverse Polarity Protection:yes Loose Lead Detection:yes Overload Protection:yes Storage battery tester fit for all kinds of lead-acid batteries that used in equipment system associated with lead-acid battery. Do please do not check the series connection battery with the tester. Colour:Green Material:plastic Package Contents: 1 x Car Battery Tester(Different factory batches, if there are slight differences in appearance, it will not affect the use) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.