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Deans Connectors

What does it mean when a blue light blinks


Blue Blinking Lights


The 2S Balancer has 2 blue LED's that may blink from time to time.   What do they mean?

If you look at a picture of the 2S Balancer you will notice there are 3 small LED's on the board.  One at the top near the connection, and 2 on each side of the balancer.   

The LED at the top is a RED LED, if you see this illuminate it means that you have connected the 2S backwards.   At Fromeco we always try to only use RED LED's as warnings.   This is in fact what this is.   If you see RED it means you have connected the balancer backwards.   You need to unplug, and either flip the connection, or inspect your wiring to make sure you don't have a systemic wiring issue (backwards from the battery etc.)


The BLUE LED's.   There are 2, one on each side of the board.    Each LED represents that LEDs' cell (each side of the pack).   If you see the Right side BLUE LED  ON STEADY--BLINK--ON STEADY--BLINK this means that the Right cell in the pack is high enough to trigger the balancer to come online and balance that cell back to its brother in the pack.   The tolerance on our balancer is about 35 millivolts.   So it takes very little for this to happen.  NOTE:  This is not unusaul, this is normal.  If you see a blue light come on for a little while this is OKAY, this is why you bought the 2S balancer it is doing its job. 

How does it know?  The 2S Balancer utilizes a sleep function which has a wake up routine.   Basically the 2S Balancer spends most of its time asleep, waking up for a millisecond to check voltages and then going back to sleep.  When the Balancer wakes up and sees an imbalance larger than 35millivolts it goes to work.