When I try to charge my batteries the red and green lights of my NTN1168A desktop charger flashes. I use the MTS2000 hand radio.

Your radio is liquid damaged and is not economical to repair. Sorry for the bad news, happens all of the time http://forums.radioreference.com/motorola-forum/187778-radius-cp200-orange-amber-light.html

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.

Best regards.

Ridgid charger lights read as follows: Solid red; charger has power. Flashing red; charger is evaluating the battery, checking if it's cool enough to charge and if it is in chargeable condition. If the battery is hot, i.e. just came off the tool after extended use, it won't charge the battery until it cools down. Flashing red & green; the battery is defective and the charger will not charge it. Solid red & flashing green; battery is charging. Solid green; battery is full.

It depends on the type of charger, a rapid-charger would charge a battery in one hour or less and the green light would come on when battery fully charged. A slow charger will take up to 16 hours to charge a battery and has red light only.

When the charger light is changing from red to green that is a indication that it is charging the battery. When the charge is complete the light will stay green until the battery is removed or the charger is unplugged.

Clean your battery contacts on the battery and charger with a pencil eraser to assure good contact. Flashing red or flashing in general usually is the sign of a too low to charge battery, a shorted battery or a bad connection. In some instances, a battery will begin to charge once left on the flashing charger for an hour or so. Try this and see if the light becomes constant. If so, it is charging. If it still flashes, replace the battery.

Best regards.

It is either defective, or it has something touching one of the contacts causing a short. It would be best to replace the charger. Typically they are somewhat like a light bulb, they will burn out over time and need replaced.

On a Motorola charger, when the battery is charging the light should be a constant red (or amber depending on the charger). When the charge cycle is complete the light will change to solid green. Sometimes the solid green time is brief, as the battery will begin to lose charge, and the charger will go back into trickle mode and change once again to red (or amber). In most cases, a flashing light indicates a problem, such as a bad or shorted battery, an incorrectly seated battery, dirty battery contacts, or a bad connection with the battery. (Note: Batteries last 18-24 months typically. Check your date code for the age of the battery.)

There were several chargers made for the GP360, including but not limited to a 60-minute charger, a 90-minute charger, a 10-hour trickle charger and a 6-unit gang charger which would be a rapid rate, either 60- or 90- minute. If you would supply your charger's model number we could tell you which one you have.

I don't know that I have your solution, but I do have a few troubleshooting tips.

Flashing typically means: your battery is possibly old, bad or is not making good contact. Clean your battery contacts with a pencil eraser to ensure they are making good contact with the charger. Also check your charger contact to see that they are free of debris. They can also be carefully cleaned with an eraser. (Do not use any type of solvents on either contacts.)

Second, check the date code on your battery. It is 3 or 4 digit number on the label. Batteries last approx. 18-24 months before starting to fail. Here is how to read the code: 835 would be 2008 the 35th week. If the battery is more than 2 years old, you should consider replacing it.

It is wise to have your radio turned off while on the charger. You can cause harm to the radio if you inadvertently press the PTT while the radio is on the charger. Plus, your radio will never fully charge if left on.

I would go to Radio Shack and have them explain the proper charging procedure as well as inquire about the red and green lights as not all chargers go green when fully charged-Normally red indicates a charging action and if a charger has no fully charged light, then a required charge time period is noted in the instructions. Batteries can be ruined by over charging!