Single mode flashlight started strobing after replacing batteries

[oplytarp]

I have a UltraFire WF-501B Cree R2-WC 250-Lumen LED flashlight. I recently replaced the batteries with rechargeables, and since then, it has started flashing like a strobe light.

Does anyone know the reason for this or how to stop it?

 

[TooManyGizmos]

~

Must be bad rechargeables .....

Try a different set or put original batt. type back in it .

Let us know .

~

 

[mrlysle]

Not familiar with that particular light, but will it take the voltage of rechargeables? Just a thought. 2 RCR123's would be approx. 8.4v, but 1x18650 would be 4.2v :shrug:

 

[HotWire]

I've had some flashlights blink if they have the wrong batteries. Put the correct batteries back in and see what happens.

 

[lightfooted]

I have a UltraFire WF-501B Cree R2-WC 250-Lumen LED flashlight. I recently replaced the batteries with rechargeables, and since then, it has started flashing like a strobe light.

Does anyone know the reason for this or how to stop it?

I notice you left out the variables....as in 1) How many batteries? 2) What type of batteries were they? 3) How many rechargeables? 4) What type of rechargeables? I am going to make a guess here and say that you likely didn't check your rechargeable batteries and they had probably dropped below the driver circuits low voltage threshold.

 

[kramer5150]

just echo-ing the others here...
What batteries are you using, and how many?
What batteries did you use previously, and how many?
What is the voltage range of the drop in?