Question about Cobra MicroTalk PR 1100 WX (15 Channels) 2-Way Radio

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Batteries won't charge on new cobra 2VP 270 radios

New cobra 2 way 2vp- 270 radio, rechargeable batteries don;t recharge.
any suggestions?

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  • Anonymous Mar 23, 2014

    Purchases a set in the USA but live in Austaralia what will I need to covert in Austaral for recharging

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  • 109 Answers

If radios are brand new then I would take them back to the store for warranty exchange. The other opton is to vist a local radio service center and ask the tech to jump the battery. if the battery falls below a certain voltage it might need a quick jump sart from a power supply with a higher voltage normally 12 volts works well...

Posted on Aug 20, 2008

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Posted on Jan 02, 2017

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Charge time cobra 235 recharge batteries


Hi! I've got a different cobra model and I find it ridiculous, but there is no indication when the batteries are fully charged... Either use external charger for your batteries or just leave it plugged in overnight- that would ensure full charge (it does in my case, I've checked batteries with multimeter)

Sep 23, 2014 | Cobra Radio Communications

1 Answer

Cobra microtalk will not charge


this is the sign of a damaged or dead battery pack. they can be rebuilt at Batteries Plus or replaced. I would also try alkaline batteries in the radio before spending money on new battery packs. Most rechargeable battery packs must be kept charged regularly, and should be fully discharged before recharging, or they will be damaged and end up with a limited lifespan. IF you are handy with a multimeter you can check to see that the charger is putting voltage out by placing the probes on the contacts while it is plugged in. especially if the cord is twisted or looks stretched, but generally it is the battery not the charger.

Sep 03, 2014 | Cobra CXR875 30 Mile 22 Channel FRS/GMRS...

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My Cobra MircroTalk walkie-talkies aren't charging. The charge light doesn't turn on and I've made sure u turned Tue units themselves off. The model number is: GA-CQ


If your problem started after replacing the batteries (mine did), see this: http://www.walkie-talkie-radio.co.uk/replacing-cobra-walkie-talkie-rechargeable-batteries.html If that is your problem, you can also fix it by wrapping foil around the bottom of the battery that makes that touches the bottom side charging contact.

Oct 19, 2013 | Radio Communications

2 Answers

Cobra Micro Talk PR4750WX.New rechargable batteries will not charge in provided charging cradle.


The original Sanik batteries have a negative side with about ten mm of metal showing on the side. Trim the plastic off your new batteries to match and the cradle charges again.

Dec 11, 2012 | Cobra 22 CHANNEL 2-WAY RADIOS

1 Answer

Where can I get a new set of rechargable batteries for my cobra microtalk cxt275


The Cobra CXT275 radios can operate on any type of battery (Alkaline, Ni-Cad, NiHM). Each radio uses 4 AAA batteries. Only special rechargeable batteries can be recharged in the actual radio (see below)
If I remember correctly, they come from the factory with NiHM batteries rated at 300mAH. "mAH" stands for milli-Amphere-Hour and it represents the storage capacity of the battery. (The larger the mAH, the longer run time of the battery)

You have 2 options: A or B
Option A) Buy a set of Nickel-Metal Hydride AAA rechargeable batteries and a external battery charger. When the batteries die, pop them out of the radio, and charge them in the external charger. When they are recharged, pop them back in the radio.
Option B) If you want the ability to charge the batteries in the radio, using the "drop-in charger" then you will need modify the batteries so they can charge in the radio.
Follow these steps: You must be somewhat electrically inclined to do this...Note: By doing this you are going to void the warranty of the radio and new batteries that you just purchased.
1) Buy a set of Nickel-Metal Hydride AAA rechargeable batteries. You can probably find some rated at 600 mAH (this will extend the run time)
2) Looking at the back of the radio with the cover removed, there are 4 slots for batteries.
3) Looking at the battery slot on the far right, you should notice 2 contacts for the negative contact. The one on the bottom, is the contact for the radio to receive power from the battery. The one on the side (about 1/8" inch up from the bottom contact), is the contact for the charger to recharge the battery.
4) You will need to modify 1 battery for each radio. Somehow you need to bridge the bottom contact with the side recharge contact.
5) (look at the negative end of the cobra factory batteries and this should help you realize what you need to do) depending on the manufacturer of the new rechargeable batteries, you may be able to use an X-acto knife and remove 1/4" of the plastic wrapper from the bottom of the battery on the negative end. This should reveal the metal shell of the battery that can mate with the radio's side recharge contact.
If it does not, you need to find another way to have it mate with the bottom contact. You might be able to use some Aluminium Foil to bridge the bottom contact with the side recharge contact. Be sure the Aluminium Foil does not touch the positive contact of the battery to the left! You could have an electrical short!
6) Insert the Modified Battery into the right slot.
7) Insert the other 3 new batteries into the other slots. These do not have to be modified. Only the right most battery needs to be modified.
8) Drop the radio in the charger for the batteries to charge. The red LED on the charge base should come on. If it does not, then the side recharge contact is not making a good connection with the negative battery terminal.
9) If the red LED comes on, then the modification works. Let the batteries charge for 24 hours for their first initial charge.
10) When the batteries die after radio use, then charge them for about 12 - 16 hours in the drop-in charger. Do not let the radios sit in the charger for long periods of time. That can destroy the batteries. Take the radios out of the charger when the allotted time has passed.
11) If you hardly ever use your radios you will want to drop them in the charger for about 8 hours every 3 months. This will keep the batteries fresh without damaging them.
I hope this helps, Thomas (Electrical Engineer)

Feb 22, 2012 | Cobra Radio Communications

2 Answers

Cobra pr 3850wx bought new NiMh 800mAh 1.2v rechargable batteries now the base charger lights won't come on when i put the radios in it


  • A Cobra 3850wx Radio requires 4x600mAh NiMH 1.2V AAA Part # GA-3ANH rechargeable batteries.
  • Not just any AAA rechargeable battery will charge in the unit.
  • All will work in the radio but not all will charge inside the radio. It has to be a specific battery.
  • This is an example of what you need. GA-3ANH batteries which will charge inside your radio. http://www.tomsawyer2wayradios.com/catalog/item/3823249/5076887.htm
Regards, Tony

May 22, 2011 | Cobra Microtalk 100 FRS Walkie Talkie...

1 Answer

Cobra HH 40 charger specs


I have a Cobra HH-40 CB radio and am charging it as I type. The included charger is rated at 16V DC, 100mA. The pattery pack charges 10 AA rechargable batteries (the manual specifies NiCd, but you can also safely use NiHM). The 12V DC car charger included cannot be used to charge the battery pack, but can power the radio.

Mar 25, 2009 | Cobra Radio Communications

1 Answer

Microtalks won't charge


I have the Cobra Microtalk 4100 FRS radios with charging base. After changing the batteries with new nimh rechargables the charge light would not illuminate and the unit would not charge. I noticed the original batteries had a metal band around one end. This band makes a small connection inside the battery compartment on the first battery. Seems to be a cheap way to ensure you dont try to recharge the unit with non-rechargable batteries installed. I rapped a small piece of tinfoil around one end of the first battery in the new set then popped it back in and now they will charge correctly again. Dont try this with non-rechargable batteries! I would recomend buying original replacement batteries.

Nov 28, 2008 | Cobra Microtalk 100 FRS Walkie Talkie...

1 Answer

Flashing light


the problem may be the batteries. When the batteries get old and won't charge or if a battery needs recharging the kenwood radios TX/RX LED will flash untill the problem is resolved.

Oct 20, 2008 | Kenwood Radio TK 260 360 270 370 2100 3100...

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