Question about Garmin Rino 120 2-Way Radio

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Overheat/battery drain I was using my 120 at night and used the LED light a few times and it suddenly got really, really hot even though I turned it off. Now it will still turn on and works correctly but it will heat up almost immediately and drain a set of three new batteries in less than an hour.

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  • timklass Jul 14, 2008

    I have four 120's and have the exact same problem with only one of them. Put new batteries in and within one hour (even less) the unit is uncomfortably hot to the touch and the batteries are dead. This is not from use, rather the unit was sitting on my desk out of the sun.

  • walking long Oct 07, 2008



    my 120 runs through batteries when on or off, the only way to stop the drain is to remove the batteries

  • Anonymous Nov 12, 2008

    I have the exact same problem, the Rhino GPS overheats almost too hot to hold like it has a short in it.

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Hello dogwillhunt,

It is normal for a two-way radio to generate some heat, especially during extended periods of long talk time. Consumer two-way radios tend to be much more susceptible to this because they tend to be constructed out of materials that do not dissipate heat very efficiently, such as polycarbonate and plastic. Periods of heavy transmit times also use additional power, causing the radio’s batteries to run down more quickly and require replacement or recharge. Use of the display backlight feature can generate additional heat and run the unit out of battery power even more quickly.

If the radio is heating up excessively and burning through batteries (pardon the pun) in situations where you are not using the LCD backlight excessively or transmitting for long periods of time, this may be indicative of a problem with the unit that would require service, such as a short or defective component. If such is the case, I would recommend contacting the manufacturer.

Agent Ken
Go Ahead. Use Us

Posted on Apr 09, 2008

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