battery charge indicator light flashes red
1758528
Send it back, returned mine after 2 weeks, detector works good, GPS is horrible!
708154
To charge, power should be off. Blinking lights indicate charging in progress.
1641949
i get the red light all the time it just indicates that the battery is way way too discharged
2284588
The Blinking red lights normally means that it is charging or need to be charged. When finished with charging the red light should disappear.
1410609
The battery indicator will light green when batteries are first inserted and will flash red to warn you of low battery.
1767079
It means the battery is already charged. When the battery is charging, the light is red.
1193798
If the RED LED on the adapter is on, then the BLUE LEDs on the box should begin flashing to indicate it is charging
2004273
Ours actually shows a flashing red light when the battery is getting low, just on the receiver, little red light starts to flash.
409349
From my observation, when the red light flickers (instead of steady) when motion is detected, it is an indicator of low battery. Best to charge it via the USB.
1259709
I wondered too and the answer is not in the manual which is just a paragraph or two. My guess is that the red light indicates the power is on and is recharging the battery. That makes most sense.
451524
It blinks red, yellow or green depending on the state of charge (voltage I assUme) of the battery.
1259707
That is correct. When the red LED is on, it is charging the rechargeable battery.
2172696
It flashes red to indicate that the batteries are charging. When they are fully charged, a green light appears.
1044081
Switch off, and you will see a red light while charging. The light goes out when it is done charging.
1958414
There is a red light on the charger that is lit while it is plugged in. The light does not turn off when charged.
1970833
If connected to battery charger or battery is bad. Should be a red light while charging .
1800820
Red indicator light means the charger is fully charged and ready to go, I leave mine plugged in 24/7 unless I'm on a long road trip,... Never had any issues of battery drainage