My charger is flashing red when i place the battery in it

Question edited for clarity and correct spelling of the maker.

Here is the manual section on the LED Lighting sequence. Both Red and Green flashing is not there. Your charger has a model number on the bottom of it and you didn't supply that, so this may be the wrong charger!
http://powertool.manualsonline.com/manuals/mfg/ridgid/140276002.html?p=5

The question was mentioned on Fixya before.

I have a ridgid rapid twin 18 V charger that flashes red and

Fixya https://www.fixya.com > Forum > Drills > Ridgid
Nov 21, 2019 - Red flashing means the charger or battery is to hot and must cool down before it will charge. The charger will not charge a battery if the lights are flashing.
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The Rexton charger 3g-04 is a device used to charge the batteries in Rexton hearing aids. If the charger is flashing red, it could indicate that there is a problem with the charger or the hearing aid battery.
Some possible causes of a flashing red light on the Rexton charger 3g-04 include:

1. The battery is not properly seated in the charger: Make sure that the battery is fully inserted into the charger and is making good contact.
2. The battery is damaged or faulty: If the battery is damaged or has malfunctioned, it may not charge properly.
3. The charger is damaged or faulty: If the charger is damaged or has malfunctioned, it may not charge the battery properly.

Many boards are available in market for over charging control but how u fix if u know about electronics then u do....my best information is by a inverter and charge through this...

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.

It is important that the charger is checked for output voltage before you purchase a new battery.

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.

Best regards.

I had the same problem with flashing red light on my charging dock (within 10 sec after 2nd green light came on). I did fix it. There is a rust brown securing tab that holds the battery in place. Mine must have a broken spring..... So, I put the battery into my camera, pushed securing tab over the battery and then wedged a toothpick tip to keep battery tab in place. Once back on the charger, I had no more flashing red light. The battery is charging correctly. The problem was that the battery was not held down into place correctly. I now just have to unwedge the toothpick tip to remove the battery...but not really an issue at all as I keep the battery in there all the time. Very easy fix!!!
Others suggested to reseat the plastic dock. But mine was secure. Somewhere there is not a good battery connection that is causing the red flashing light. I am thankful to figure it out. Hope this helps you.

new battery flashing red light means bad battery

Try those hereunder mentioned.

1. Clean the battery charger pin & battery charging point too. If the red light still blinking then replace your battery. Your battery life is finished then.
For confirmation try to charge your battery from others people charger or ask some same battery and fixit in in your charging place. You can short out then which one have problem.
Thanks & waiting for your feedback.