Something wrong with my batteries?

[trinity_2200]

My 445 laser start to blink about 10 mins of usage after the battery is fully charged. I guess this indicates the voltage of the battery has drop below the threshold of the driver. Is it normal for a 18650 battery?

How much current does the driver draw from the battery? I'm using microboost set @1A.

I have 2 18650, both of they behave like that ....

 

[millirad]

You are on the wrong forum. This is not for automotive help. Lasers only!

 

[BShanahan14rulz]

1A 4.5V out is 4.5W out.
4.5W in is 4.2V at 1.08A.
Add inefficiencies and you may be drawing as much as 1.3A from the 18650. A new 18650 (of reputable quality) will have no problem with 1.3A, but an older one that has been cycled a few thousand times will not perform so well.

How new are your 18650s, and did you harvest them or buy them new? They aren't ____fire cells, are they?

 

[jmgallego]

You are on the wrong forum. This is not for automotive help. Lasers only!

The post is in the right forum: "Drivers, Test-load, Power Supply, & Batteries"

My 445 laser start to blink about 10 mins of usage after the battery is fully charged...

Trinity_2200: what driver are you using? Sounds to me that it maybe overheating and blinking as it shutdowns, cools down, turns on, heats up, shutdowns, cools down, turn on... a blinking cycle.