Charging wattage query

Hi. I have a Multiplus-II and two 5kw batteries. I’m currently charging the batteries using the grid. I noticed that Ac input is almost 2000w but the battery only seems to be getting 877w


On the VRM interface I sort of get both. Grid 1989w charging 893w but below that I get charging 1973w

Is this normal?
Thanks

If you have two independent BMS … probably only one is integrated in the GX … therefore only half the power …

hence the question of what batteries you are using

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What I think you may be seeing is the charging value for only 1 battery, 2 x 877W is 1754W so agrees with your input 1990W with about 10% losses.

This is sometimes seen with unsupported batteries, or batteries where the master / slave is not set up, or where there is a comms problem or if the BMSs are not interlinked.

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Each battery has it’s own BMS, so you could very well be right. Thanks

The batteries are from China called ‘Improve’. I do have the master / slave dip switches set up, but it is probably reporting the charge for 1 battery only as you said. Thanks.

Do you have communication via your GX and can you see the batteries in the remote console?

I can see the batteries in the remote console.