My self and a fellow cameraman have had the same issue with the charger lights going out on certain batteries after they are charged where others do not? At first I thought it was a bad battery that would not charge again as when I took it off the charger and replaced no lights came on. It was not until the battery was discharged that the charger lights would activate. I know the battery has to "talk" to the charger so I am wondering if there is a fault somewhere? Just strange that it has happed to at least two units that I know of.
The battery still charges but this inconsistent charging lights is a bit troubling.Anyone else had the same issue??? After it is discharged the lights come back on as normal until its at full charge and an hour later they go out. . If the lights going out was an indicator that the battery has charged fully I would understand that but it only does it on one of the 4 batteries I have??
Comments??

Scott...I don't have that issue, but if it's only happening to one of your four batteries, I'd suspect the battery may be at fault, not the charger.

Regards,

J.

Hi Scott,

The charger has two modes when charging, these two modes are in order to prolong the life of the battery. Most battery chargers for Lithium-ion batteries operate in this way:

R.e. Lithium-ion battery - Wikipedia, the free encyclopedia (http://en.wikipedia.org/wiki/Lithium-ion_battery#Battery_charging_procedure)

The first mode is a high current mode which recharges a battery that has been discharged. This is indicated by flashing LEDs on the charger.

The second mode is a trickle charge mode for when the battery is nearly fully charged. This is indicated by four steady LEDs on the charger.

When there are no LEDs lit on the charger the battery is fully charged.

Kind regards,

Ivan Radley
Atomos