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I put last version 2.2.4 kc901s and now when I want my device to put on charging no display of charging on the display has no indication that the device is full, how will I know if the battery is full or not greeting Milan yu1prm
In my experience of rechargeable batteries in general and lithium ones in particular, the batteries are likely to be dead.
The ones supplied in the device are "protected" ones which (usuaslly, especially in laptop batteries) switch themselves off permanently.
When one considers the cost of the KC901, this is probably a good thing as otherwise there is a risk of a lot of heat and damage within the device on next attempted use.
Open up the case (instructions on this bbs), take out the batteries and test/charge them externally.
Steve L, G7PSZ.
KC901 serial VNA