Not ideal. A plug/socket arrangement carrying high current is a potential weakness, in terms of a poor contact causing overheating. Having two in series compounds the problem. Much better for high current services to be permanantly wired. However, the splitter is better than unplugging and plugging ...

The replacement battery will have the same number of cell-pairs as the original (96), but the cells are probably the newer technology used in the 100 cell-pair 30kWh batteries, which have a higher capacity and much better durability, so they should last a lot longer. The increased capacity should be...

Just a guess, but the replacement battery must have many more cells than the original, so does the BMSneed to be changed to one compatible with the bigger battery, and does the harness between the battery and BMS also need to be changed to allow the BMS to address the extra cells?

I think the BMS needs a software upgrade to tell it what the capacity of the new battery is. Afaik, the only people who can do that are KIA dealers, but you may get told that its not possible - it may depend on what restrictions are incorporated in the software of the KIA Maintenance System.

If they didn't reset the BMS, which applies default data to the GOM, then it will take something like 6 to 8 cycles before it reflects the new battery capacity.

Try https://www.warrantydirect.co.uk.

I can't say for sure, but it would be pretty indefensible if it did not, and I would expect a court to find in your favor if KIA tried to apply a lower definition (unless, they had predefined it in the warranty terms, which you have presumably checked). OTOH, if the warranty is provided by a third p...

You could routinely charge the 12V battery with a suitable charger say overnight once or twice a week. Using a modern chip-controlled charger, it is not necessary to disconnect the battery. Some chargers (e.g. CTEK) come with a lead you can permanently connect to the battery posts and route to a han...

Try closing with the left side first, and then press in the right. That's how I do mine. The latching mechanism may not be fully shutting and may need lubrication. Also, the "emergency" release may not be completely slack, so lubricate and exercise that. My formula for lubrication is some ...