If you are referring to a flashing yellow light on the charging base, this is an error code. Either the 1) battery is bad, 2) not making good contact in the charger, or 3) very very low on charge. The solution for this set of problems is as follows: 1) have the company you purchased them from replace them, 2) clean your contacts with a pencil eraser, 3) leave the battery on the charger with the yellow light flashing for an hour or two. If the battery is just very low on a charge, it will come back to life and the light will change to be constant. If the battery is bad or shorted out, the light will continue to flash and you will need to get with the vendor you purchased the batteries from.
Other things which come to mind are compatibility issues such as you are using a different battery chemistry than you had before. NiCd batteries can charge on either of the two chargers available for the P110 (slow rate or fast rate). However, NiMH and Li-Ion batteries require a fast rate charger.
If you are referring to a yellow blinking light on the radio while it is in the charger. You need to shut your radio off. Radios should always be turned off when charging. If the radio is left on you will never have a full charge. Also, if you inadvertently press the PTT while the radio is turned on, while on a charger, you can cause damage to the radio.
FYI: There is no light to show "out of range" on the radio, unless you are possibly using a trunking or repeater system. A blinking light on your radio indicates the radio is turned on and/or there is traffic on your frequency. Your charger base light can be red, yellow or green. This indicates the charge cycle status. Flashing most always means some type of error.
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I see the potential problem, your date codes you provided indicate the "new" batteries are not new date codes. Your 640 reads 2006 the 40th week. These are nearly 3 years old. While they may never have been used, and shelf life is thought to be indefinite, the batteries probably have dropped to being too low of an initial factory charge to charge correctly. Your "out of range" means the batteries' charge is out of the range of the charger (too low). Try leaving the batteries on the charger for an extended period of time. If this does not jump start them, then you should get in touch with the vendor who sold you the "old" new batteries.
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Thank you for being so prompt. The light is the one on the charger (Model ETN4611A) and the batteries are correct as well, Ni-Cd 7.5v (HNN8148A ) The charger has flashing red light (unchargable) flashing yellow (out of range<0c) steady red (rapid charge) flashing green (90% charged) steady green (100% charged) The only difference is on the labels they both state HNN8148A the old ones have got 640 IK the new ones have 520 AKA on them
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