Innova 3721 Battery and Charging System Monitor
Original price was: $27.76.$20.12Current price is: $20.12.
Price: $27.76 - $20.12
(as of Apr 20, 2025 19:29:39 UTC – Details)
Easily plugs into vehicle’s cigarette lighter or power receptacle to monitor battery and charging system voltage
Designed for 12-volt negative ground systems
LCD displays measured voltage with a bar graph to indicate battery charge level
Color-coded LEDs quickly identify battery’s charge status
Head pivots for easy viewing and angle adjustment
Customers say
Customers find the battery monitor works well, providing real-time voltage readings and monitoring both battery and alternator output. The device is easy to understand, comes with excellent instructions, and customers consider it well worth the price. They appreciate its build quality and accurate measurements, with a large, bright display that’s easy to read even at night. Battery life experiences are mixed – while some report it doesn’t drain the battery, others mention it states their car battery is dead most times.
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Original price was: $27.76.$20.12Current price is: $20.12.
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