12V LED digital battery mate is a simple but efficacious battery testing tool which can determine the battery state, it's easy to use and be understood.

Do you have the same problem？

The battery is fully charged, but after using it for a short time, it will notify you that it is time to charge

The battery charging speed has slowed down

Is the second-hand car battery I bought as good as the dealer said?

I want to drive a car that has been in the garage for a long time, do I need to charge it?

Stop guessing!

BM310 battery tester maybe fix those problems.Just 3 seconds.It is so cool and easy to know your battery status.

It's small and convenient, and it doesn't take up any space in your toolbox or in the car. Plug and play, easy to use. Quick response, indicator light display, easy to understand

Note:

1.Don’t connect the battery for a long time.

2.When car is energized and not started,it detects the voltage of the battery. If the voltage value is lower than 10V (OK led flashing), it is hard to start; if it is lower than 11.6v (low led flashing), please turn off the electrical appliances on the car and start alternator to charge immediately

3.When the car starts, it detects the voltage of alternator.Lower than 13.5v (good led flashing), it can’t charge the battery. You need to check the alternator or turn off some car electrical appliances. Above 14v (fault light flashing or on), check the engine.

Main Functions:

1. Checking charge level

2. Functional test of dymano

3. Checking battery starting capability

4. Battery overload display

Connections:

Attach the cable clip of the red cable to the plus point(+) of the battery and the cable clip of the black cable to the minus point(-)of the battery.

6 LED Lights:

1.Alternator state check:

First light (red):Fault

Second light (green):Good

Third light (green):Full

2.Battery state check:

First light (yellow):Middle

Second light (red):Low

Third light (green):OK

Different Led display to show Battery Sate:

Display 1: All led lights off;

Testing results: none Charging Voltage, Dead Battery.

Display 2: ON led twinkling, other Led off;

Testing results:4.6-11.2V Charging Voltage, Engine being hardly turned on, turn off all electrical equipment and charge battery immediately.

Display 3: ON led ON, LOW led twinkling;

Testing results:11.2-11.6V Charging Voltage, Low charged Battery, being charged immediately.

Display 4: LOW led on, MIDDLE led twinkling;

Testing results: 11.6-12.2V Charging Voltage, Middle charged Battery, better being charged sooner.

Display 5: MIDDLE led on;

Testing results: 12.2V Charging Voltage, Middle charged Battery, better being charged.

Display 6: MIDDLE led on, FULL led twinkling;

Testing results: 12.2-13.1V Charging Voltage, Middle charged Battery, better being charged.

Display 7: FULL led on, GOOD led twinkling;

Testing results: 13.1-14V Charging Voltage, Good battery, Full Charged

Display 8: GOOD led on;

Testing results: 14V Charging Voltage, Good battery, Full Charged.

Display 9: GOOD led on, Fault led twinkling;

Testing results: 14-16V Charging Voltage, Battery may be damaged, Check the engine and tester.

Display 10: FAULT led on;

Testing results: Above 16V Charging Voltage, fault Battery.

Specifications

Assembled Product Dimensions (L x W x H): 2.30 x 5.40 x 1.50 Inches

Weight: 64g