1 out of 3 reviews READ REVIEWS

Mighty Jump Vehicle Battery and Charging-System Monitor

S&H: $3.50

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Overview & Details

Mighty Jump Vehicle Battery and Charging-System Monitor
Ever replace what you think is a dead battery only to find the problem is actually your alternator? End the guessing games and grab this battery and charging-system monitor. It lets you know at a glance if your car won't start due to a drained battery or an alternator that is failing. It not only saves you money getting a diagnosis from a mechanic, it also helps you avoid replacing the wrong thing. We think that's something worth getting charged up about! 

What You Get

  • Vehicle battery/charging-system monitor
  • Instruction manual
  • Manufacturer's 1-year limited warranty

Good to Know
For warranty information, please call HSN.com Customer Service at 800.933.2887 (8 am-1 am ET).
Shop all Mighty Jump
Model #: MJTEST
Measurements: Approx. 2-1/2"L x 5-1/2"W x 1-18"H
Weight: Approx. 2.4 oz.
Material Composition: Plastic and metal
Use and Care: Use only as directed; disconnect when not in use; avoid excessive heat exposure
Country of Origin: China


Vehicle battery and charging-system monitor
  • Test the condition of your battery or alternator
  • Simply plug into your vehicle's cigarette lighter/power port and receive a reading on the charge level (current voltage) of your battery
  • Plug it in with the engine running to check that your alternator is effectively recharging your vehicle's battery
  • Two system-checking capabilities in one
  • End the guessing game about weather your battery or your alternator is the problem

Easy-to-read LCD screen
  • Colored LEDs give test results in seconds

Small and lightweight
  • Stores easily in a console or glove box

Makes a great gift
  • Perfect for new teen drivers, college students, parents and grandparents and more


Mighty Jump Vehicle Battery and Charging-System Monitor
3 reviews 1 out of 5

Review Breakdown

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100% 3
  • Not good.

    This wouldn't even fit into my outlet (cigarette lighter).

    JMOp2017, WA
    Was this review helpful? 6 out of 6 found this review helpful
  • Terrible Product

    This did not fit into the power supply, too large. Since they did not say it would not work for certain years or models I assumed it was universal! This would be a nice product if it worked!

    Califgirl03, CA
    Was this review helpful? 14 out of 15 found this review helpful
  • DEAD

    I read the instructions and followed them exactly. No lights came on the device and no read-out. Dead. Sent back today.

    Renee224, TX
    Was this review helpful? 14 out of 15 found this review helpful