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KONNWEI BK300 Bluetooth Battery Monitor for 6V, 12V, 24V and 48V

$9.99 (Price correct as of 11/01/2026 18:18 PST · Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.)

The KONNWEI BK300 Bluetooth battery monitor supports 6V, 12V, 24V and 48V batteries, including lead-acid, AGM, EFB, VRLA, GEL and lithium types. It provides voltage monitoring, cranking and charging system tests, real-time trip logging and voltage history. Bluetooth monitoring is stated to work from 25 to 50 feet. Check the battery’s voltage and chemistry, and keep the hood open during measurement to avoid affecting the connection.

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SKU: B0F2M3JYCV Category:

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Quick Summary

The KONNWEI BK300 is a Bluetooth battery monitor for 6V, 12V, 24V and 48V batteries. It monitors voltage and provides cranking and charging system tests, with live data and voltage history features.

Key Details

Detail Product information and buyer relevance
Supported voltages 6V, 12V, 24V and 48V. Match the monitor to the battery’s stated voltage.
Battery types Lead-acid, AGM flat or spiral, EFB, VRLA, GEL and lithium.
Monitoring and tests Voltage monitoring, cranking and charging system tests, real-time trip logging and voltage history.
Connection Bluetooth 5.2. The stated remote monitoring distance is 25 to 50 feet.
Protection and enclosure Short-circuit protection, an IP68 rating and an ABS shell.

What to Compare Before Buying

  • Confirm that the battery uses one of the four listed voltages and a supported battery type.
  • Consider where readings will be viewed. The stated Bluetooth monitoring distance is 25 to 50 feet.
  • Plan to keep the hood open during measurement, as closing it may affect the Bluetooth connection.

Compatibility, Size and Fit

The listed chemistry support includes several lead-acid types as well as lithium batteries. Check the battery label and match both its chemistry and voltage to the monitor’s stated support before selecting it.

Important Limitations

The description identifies cranking and charging system tests but does not provide test steps or explain how results are presented. Follow the manufacturer’s instructions for connecting and using the monitor. The stated Bluetooth distance is 25 to 50 feet, and the hood should remain open during measurement to avoid affecting the connection.

Before You Decide

Check the battery’s voltage and chemistry, and consider whether the stated Bluetooth distance and open-hood measurement condition work for your setup.

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