According to our information, this charger is compatible with Canon LP-E8 and LP-E6 batteries. Please report your situation to our customer service so that they can check this and help you accordingly. https://www.digitec.ch/help
Yes, the Patona Triple Charger for Canon LP-E6 is also compatible with the Canon LP-E6NH battery. This charger supports the charging of LP-E6NH, LP-E6N and LP-E6 batteries, which means that it can also charge the LP-E6NH battery for the Canon EOS R5. If the battery is not charging, it could be due to another problem, such as a faulty battery or a fault in the charger. It would be advisable to check the charger and the battery again.
According to the sticker on the unit, it charges as follows:
Input 5V - 3A
Output 8.4V and 1 battery with 850mA each, 2 batteries with 650mA each, 3 batteries with 450mA each.
Depending on the manufacturer, an LP-E6 battery has approx. 2000mAh, which would mean that charging 3 empty batteries at the same time would take approx. 4.5h. In practice, I achieve about these values.
Since the charger only takes 5V input, there is no advantage from USB-C Power Delivery.
Since the batteries only differ in capacity and not in voltage, the charging process should work, but take a little longer for the higher capacity types.