So the unit has arrived.
Everything OK.
The cables are weak, but I knew that beforehand.
Charged battery, OK, only the LED display is so weak that you can not see how far it is to the charge.
What I like that the charging process is electronically controlled and is not as formerly charged full steam ahead.
Whether a Battrerie can be loaded with less than 7.4V, I can not say.
It is a fine device, with many details, such as the trickle charge after full charge and the function as a power supply.
You have probably ensured that the battery is not completely to the dogs go, and then everything is OK.
Gruss, Jan