Photo of an assembled BVM1 kit

BVM1 - 12 Volt Battery Voltage Monitor Kit

The BVM1 kit can be used to monitor the voltage of a 12 Volt battery. It features ten ultra-bright LEDs in five vivid colors for quick battery voltage measurement. One of the LEDs will briefly blink on every 1.25 seconds, keeping average power consumption low. The display is readable from dark to full sunlight. A switch-controlled low voltage beeper is included, this provides a warning when the battery voltage drops below a user-set value.

The BVM1 is designed to operate in conjunction with the CirKits SCC3 solar charge controller, a 12V rechargeable battery and a photovoltaic (PV) panel. It will also work with 12V automotive, marine and RV power systems.

Controls include: Calibrate/Blink switch for setting the LED display to continuously-on or low-power blink mode, Beep On switch for enabling and disabling the low voltage beep function.

See the BVM1 specifications for details on the kit's capabilities.

The kit includes:

A high quality double sided, silk screened circuit board.
All of the parts required for building the board.
A schematic and wiring diagram.
Easy step-by-step assembly, alignment and usage instructions.

Power source and solder are not included with this kit.

Kit Prices and Shipping

BVM1 kit: $39.95
Discounts are available for orders of 10 or more kits.
U.S. addresses, First Class Mail shipping and handling: $5.00 per kit, add $1.00 each for additional kits.
U.S. addresses, Priority Mail shipping and handling: $10.00 per kit, add $2.00 each for additional kits.
Overseas, Canada and South/Central America addresses, Shipping and Handling: $18.00 for 1 kit, add $3.00 each for additional kits.
Send email for a quote on multiple kit types, please use the address at the bottom of this page.

Payment Methods

Credit cards (click the PayPal buttons below).
Wire transfers only accepted for orders over $500, $35 fee applies.
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Payment by PayPal / Credit Card

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	BVM1 U.S. Mail, First Class
	BVM1 U.S. Mail, Priority
	BVM1 Outside of U.S. / Overseas Orders

More Information

BVM1 Specifications and Features
BVM1 Schematic and Theory
BVM1 Assembly Instructions
BVM1 Alignment Instructions
Solar Powered 12V Ham Radio Station uses the BVM1 with other CirKits kits
Alternative Energy Web Sites for sources of solar panels and batteries.
CirKits Home Page for more electronic kits.

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