Immediately off the charger the unit shuts itself off as soon as
We have 42 radios tha t staff use to communicate and one of them tuurns itself off right after it comes off the charging cradle. it is frustrating and would like to know if there is a setting we are unaware of or what.
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Re: immediately off the charger the unit shuts itself off...
You did not mention the age of your rechargeable batteries. If the batteries are more than 18-24 months old, you may need new batteries. An easy test would be to switch a known good battery into the radio with the problem. If it solves the problem, replace the battery.
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Battery save mode takes over quickly. As the battery runs down, the radio will shut itself off. It is not something you can unprogram. If you leave it on the charger and expect it to stay on, I can only speak from experience of another brand I use as an in house intercom. The charger tops off the battery and somehow shuts charging off, allowing the radio to run dead in the charger! I'm a tech and cannot figure a way around this, it sucks! This this what you meant? Here is the manual link: https://www.cobra.com/sites/default/files/manuals/CXT645_MANL.pdf Let us know! Jay
If the tablet works while plugged-in to the charger, yet dies immediately when the charger is disconnected, it means that the rechargeable battery in the tablet is dead.
If the unit will not turn on at all, even with the charger attached, the charger itself may have failed, or the unit may be having other issues.
It is possible you have a battery or charging problem. Transmitting takes more energy than any other function of the radio. Pressing the PTT can quickly reveal a bad or poorly charged battery pack. Check your charger, clean all battery contacts on the charger and radio with a pencil eraser and try charging again. Also, you can try changing a battery out of a known good unit and see if the problem moves with the battery.
It sounds like a bad, defective, or low battery. It takes more energy to transmit than to receive, or to be idle on standby. Pressing the PTT button to transmit with a low or bad battery would cause the radio to shut down or nearly shut down.
Try another battery pack in your radio or swap batteries with a known good unit to confirm the battery is the problem.
Other problems might include the battery being poorly charged. Check your charger. Or you could have an overall problem with the radio itself. This is a non-repairable unit, so if it is the radio you would need to retire it.
Clean all your battery contacts with a pencil eraser to make certain of a good connection.
With the radio unlocked: You should check your Qt filter to see that it is also programmed the same. It is recommended you use it in the off or minus position for best communications. If this does not solve the problem, try setting all the radios back to the basic Channel 1, Code off, Qt off, position and see if they will work together. Shut off any special features such as vibra call and call alert, as these when not used correctly can also cause issues with inexperienced users.
If this does not solve the problem. Lastly, check your chargers and batteries. Clean battery contacts with a pencil eraser. Trade batteries from the known good unit into one of the others to see if it solves the problem.
If the unit is only a year old? then I would suspect that the charger has a problem that has damaged your battery. Do you use an external power continuously?
Try a different charger or if you have a meter make sure the charger is putting out close to the specs on it. Try using the usb cable to charge it.
The low battery and shutting off are typical of a battery that won't/can't hold a charge. That is typical after 2-3 years plus but not one year. It can also be indicitive of the charging circuit needing to be reset. The problem is it needs to be started and run long enough for it to recognize the reset command. To do this, hold your finger on the bottom right corner of the screen while powering the unit, until it asks if you want to reset it. That might get you running.
While I would be suprised at the battery going out within a year or so it is not unheard of. You may have to replace the internal battery pack. The unit is new enough your only source is probablly going to be Garmin. They might replace the battery under warrenty or out (if you talk nice).
I had this happen, and I solved it by connecting it to the car charger for a while, then bringing it in and connecting it DIRECTLY to the AC charger for a full charge. (This assumes the battery is not just kaput.)
Here's what I think happens: The AC charger doesn't have enough current capability to run the unit by itself AND keepp the battery charged (bad design), so, if left continuously ON, the battery will eventually drain. In this state, if you shut it off, the unit senses a low-battery condition and will try to charge, but the charging circuit tries to draw too much from the AC charger and the voltage droops (causing the whine) to the cutoff point (causing it to stop charging, another case of bad design). The car charger has more current capability, so it gets the battery charged enough to use the AC charger again.