Question about Motorola Talkabout T7450 (22 Channels) 2-Way Radio

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Motorola T7450 Charger Light is Out. Not Charging??

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In most cases when the charger light will no longer illuminate, the charger is bad. (They are somewhat like a lightbulb. They will burn out over time.) You should be able to find another one online or at your local Motorola dealer for $15 US or less.

Posted on Nov 25, 2008

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Red light flashing on charger


A red light indicates the charger is charging the battery, an amber light means it has switched from fast rate charging to trickle to keep the battery topped off, and green would mean the battery is completely charged. But don't be fooled waiting for green, many times the charger will only be on green for a moment before changing to amber and keeping the battery topped off.

Flashing can be a sign of a problem on some chargers.

A rapid flashing red can on some chargers indicate a bad or shorted battery, or a bad battery contact in the charger itself. If in question, try a different battery on the charger or compare with another charger to determine if the blinking is normal.

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The battery is flashing red when charging


You do not mention which model of Motorola radio you are charging, so this will be basic information: Typically if a charger blinks red when the battery is initially put on the charger, you either have:
1) Dirt contacts. Solution: Clean with pencil eraser, both radio and charger contacts.
2) Shorted or bad battery. Solution: Replace the battery.
3) A bad charger. Replace charger.

Some simple troubleshooting might determine your problem. Try the battery on a different charger and see if you get the same blinking light. If so, you have a battery issue. If the problem disappears when you place it on the known good charger, then you know you have a charger issue.

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My Motorola CLS1110 Two way radio has issues charging. I have a 6 station charging station and when I put the walkie on the dock to charge the light just contiues to blink red. I have to continually...


You may have a bad battery, or even dirty battery contacts. A few troubleshooting ideas include:
1) Swap the battery to another known good CLS1110 radio and see if the other radio has the same problem when placed on the charger. If so, you have a bad battery. This type of battery typically lasts approx. 18-24 months before needing replaced.
2) If swapping the battery proves to be successful, check the battery contacts on the affected radio for debris, scum or dirt. Clean the contacts on the charger and the radio with a pencil eraser if needed. (The fact you have to readjust the walkie in the charger indicates you might have problems with the contacts.)
3) Try the battery from the known good radio in the affected radio, if the battery charges correctly, you know the radio is fine. If the charger blinks with the known good battery, then you know you have a radio problem.

Best regards.

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1 Answer

My charger for my Motorola T6510 is not charging. The charger is getting power.


Check your battery contacts, both on the radio and the charger. Clean with a pencil eraser if needed. It is possible you are not getting good contact. If both radios are not getting charged in a dual well charger, you may have a problem with either the wall adapter or the base. (Assuming your batteries are good.) Wall adapters burn out over time, somewhat like a light bulb.

Replacements are available at the Motorola online store. http://www.store.motorola.com/2-Way-Radio-Rechargeable-Battery-Upgrade/dp/B003H0FUD2?ie=UTF8&id=2-Way%20Radio%20Rechargeable%20Battery%20Upgrade&field_availability=-1&field_launch-date=-1y&field_browse=2265964011&searchSize=12&searchPage=1&searchNodeID=2265964011&refinementHistory=brandtextbin%2Csubjectbin%2Ccolor_map%2Cprice%2Csize_name&searchRank=salesrank This kit contains a pair of new batteries and a complete charger.

Best regards.

Nov 04, 2010 | Motorola T6510 XLR Talkabout Two-Way...

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I have a set of T7450 talkabout One of them when you transmit the other person can hear you but all you get back is a high pitched sound and static. sometimes it will work ok.


Check your batteries. One simple check is to trade the batteries between the units and see if the problem moves to the other radio.

Best regards.

Feb 12, 2010 | Motorola Talkabout T7450 (22 Channels)...

1 Answer

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The rapid rate charger WPLN41__ will typically charge a battery in 90-120 minutes. Your battery should be depleted or nearly depleted when you place it in the charging stand. Be certain your radio is always turned off, when charging an attached battery. The NiMH battery will generally go 12-16 hours on a charge when new. If you work an eight hour shift, you might see if the radio will go 2 days on a charge. Later as the battery ages, you will need to charge it nightly. (Think of putting it in the charger as putting it to bed at night.)

Rapid charging is necessary on NiMH and Li-Ion batteries. They require a "hotter" charger, a fast rate, to completely charge the battery. It will not harm this chemistry of battery. It is safe to leave the battery on the charger overnight, or for a weekend. We would not recommend leaving the battery on the charger longer periods of time, as that will age the battery and reduce its life.

(Sidenote: Frequent rapid charging will however reduce the life of a NiCD battery.)

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1 Answer

Dangers of a Motorola being left on when charging in a multilpe


Don't know if you'd call it dangerous, but wisedom would be not to leave a radio turned on while on the charger. 1) Shortened battery life due to short charging. The battery will never be fully charged due to powering the radio. 2) Inadvertently pressing the PTT button while the radio on the charger can/will burn out components in the radio including the PA (final amp) which is a costly repair.

Instead of leaving the radio turned on while on the charger, buy a second battery to keep on the charger. Then you only need to swap batteries. Your radio would be able to remain on, and never be on the charger.

Jun 28, 2009 | Motorola Radio Communications

1 Answer

1. isthe battery charging 2.isthe charger


You don't mention a make or model, so I can only give you general solutions. If the radio has a drop-in charger there may be a light to indicate charging. If the light comes on when the radio is in the charger, it's getting a charge. If you have a multimeter, DVM, or DC voltmeter you can check the battery voltage (charge) both before and after a charging cycle. You can also use the meter to confirm the output from the charger. If possible, replace the batteries with standard alkaline types and see if the radio works. I hope this info helps.

Bill B.
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Apr 30, 2009 | Motorola Walkie Talkies 2-Way Radio

1 Answer

MOTOROLA T5522 BATERIES


Hello mironas3,

A general rule of thumb when dealing with rechargeable battery packs is to take the capacity of the battery divided by the charge rating of the charger and then add an additional 10%.

Offhand I am not sure what the voltage / capacity or voltage / charge rating of the battery and charger are but you can determine that by examine the labels on both items. Let’s say (for example) that your battery is listed as 7.2 volts and 1,000 mAH and your charger is rated as 9 volts and 100 mA. (These are just theoretical examples. Substitute the numbers from your own items.) You would divide 1,000 mAH by 100 mA to equal 10 hours. Then add 10%. So you expect a full charge to take around 11 hours time.

Of course, actual charge time will vary depending on how discharged the batteries are when you start charging them. Since the charger that Motorola provided doesn't have a charge indicator determining when the batteries are done charging is a matter of making an educated guess. If you touch the batteries while they are charging and they feel warm to the touch, that's a pretty good indication that they are done or nearly done charging as once the batteries are topped off excess power will turn into heat. (Note that batteries in a charger should never be HOT. If they are ever more then just slightly warm, something is wrong with the battery or the charger or both.)

Also, just a word of warning here: remember to always use the correct manufacturer recommended charger. Substituting a charger with twice the charge rate to charge the batteries in half the time is not a good idea. Rechargeable batteries are meant to be charged slowly. Fast chargers exist but they typically have built-in circuitry that pulses the charge rate to prevent the batteries from overheating. Using the wrong charger can result in damage to your battery or radio or worse could possibly even lead to a fire.

Best Regards,
Ken
"Go Ahead. Use Us."

Jul 28, 2008 | Motorola T5522 (7 Channels) 2-Way Radio

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