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Motorola RDM2070d walkies, One shows battery is fully charged, the other says the battery is low and makes the alarm sound of dying battery

I have tested it with 3 batteries, one of my walkies shows the correct battery gauge, fully charged, works great, then when i stick the batteries in the 2nd walkie it says every battery is low and dying, it then just makes the alarm sound of dying battery until it shuts off, is this something i can fix? my jobs low on walkies so i usually fix parts of these and this issue is new to me

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Hello, After charging my Peak 300 Jump Starter it whistle's (loudly) after I unplug it and it just keeps whistling... Can you tell me what the matter? email:

Refer to the instructions that came with charger. If you threw them away you have a problem You can go on line and download instructions.
Low Charge Alert (LCA)
On the front of the unit there is a Low Charge Alert port. There is a red plug in this port. With the plug
removed, when the battery level drops to LO, an alarm will sound to remind the user to recharge the
The alarm can be turned off one of three ways:

Placing the pin back into the Low Charge Alert port

Recharging the battery immediately to bring it to the capacity of 10% or more

Pressing the battery indicator display button. If the alarm is turned off by pressing the battery
display button, the alarm will sound automatically again in approximately 1 hour.
The alarm will only be turned off permanently if the battery is in a fully charged state, or the pin is
inserted in the Low Charge Alert port. There is a storage port on the back of the Jump-Starter for the
LCA plug. When the plug is removed from the LCA port, it should be installed in the storage port on the
back of the Jump-Starter.
Charging Jump-Starter Battery
All rechargeable batteries gradually discharge when left idle, and you need to recharge them
periodically to maintain maximum battery capacity. The AC charger plug within the Jump-Starter is
designed to charge using a 110/120-volt outlet.

Fully charge unit to the recommended maximum and initial charge time of 24 hours. Thereafter, an
AC typical charge time is 8 to 12 hours.

Recharge the unit fully after each use. This will prolong the life of the battery because frequent
discharges between recharges will reduce battery life.

Make sure all functions of the Jump-Starter are turned off during recharging

I have ups working in normal operation but indicates alarm " low battery warning " and batteries charge 100% and i cann't rest this alarm

check the condition of the batteries if older that 3 years
the internals expand and split the outer cases
even though they may indicate fully charged , the capacity to run then pc may be severely limited making the alarm show

I have the CXT88. It's been a while since I dont use them. Now I can't get them to work.

Assuming these are Cobra CXT88 radios.

Make certain they are fully charged. I suspect the batteries. If the radio was left in the "on" position, it is very likely the batteries will not take a charge. The batteries can die in the drawer as well. Lithium batteries for all their good points really do not store well. (Yes, expensive lithium batteries such as your power tools or laptops do store well.) So, plan on new batteries. Many radios have become less expensive this year, so price out a new pair. That way you would have fresh batteries and a new charger.

The battery is fully charged on the walkie talkies and all are on the same channel, however out of 12 walkie talkies only 2 will work. When ever you push the push to talk button the walkie talkie shuts...

Your batteries are either no good, or not charged. When you press the PTT button it takes more energy than being in standby mode. If you have a battery problem it will fail quickly when the PTT is pressed.

Rechargeable batteries last approx. 18-24 months. Check your battery for a 3-digit date code. It is usually a 3 digit number followed by a couple of letters. The numbers tell the date of manufacture. The first number is the year, followed by the week of the year. 025 would be 2010 the 25th week. (or if very old it could be 2000 the 25th week.)

If you feel age is not a problem, you might check your charger(s) to see they are fully powered, and clear of debris on the contacts (and the radio contacts as well). Clean with a pencil eraser if needed.

A few tips: Be certain when placing your radios on the charge they are turned off. Check your wall outlet to be certain it doesn't get shut off with a light switch. Expect to replace your batteries every 2-3 years.

Best regards.

Walkie talkie batteries don't last

The Batteries that Motorola uses will die after a while mainly because people leave them on the charger all of the time. But there is a way to refresh them. You let the battery die completely, then you charge it up for about 12 hours. Then you let the battery die completely. Do this a couple of times and the batteries will last long.
Also, Motorola use to make a battery refresher (or did when I worked there.) It will charge and drain the battery automatically. It will even give you a fault if the battery is completely dead. For the HT1000 (for example) it would be the WPPN4065BR.
For future reference, don't constantly charge a battery. Only have it on the charger when the battery is actually dead or very low. This will increase battery life.

New walkie talkies wont stay charged and wont communicate with each othe. One calls and then goes blank and turns off,

It's really hard to tell what's going on without more information, but it sounds like your two problems are really one; that is, the shutdown is due to low battery power. If you have a voltmeter you can check the charger output and the battery voltage when fully charged. My bet is that the batteries are no good, so they are not taking a full charge and are discharging rapidly. Try new batteries in one of the radios and see if that solves the problem.

Strange sound coming from walkie talkie, strange beeping

Most Motorola radios give a beep-beep when the batteries are low and need changing. Make sure to use a good brand of battery. One other thing to check for is leaking batteries, the crud with cut down on performance.


Try charging the battery for a long time.
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