Keeping a Swedish car's battery alive through a Dubai summer
These cars carry a lot of parked electrical load; a Volvo left standing for a fortnight is a realistic no-start. For the battery specifically: park in shade where you can, drive far enough to actually recharge rather than only starting the car, and have it load-tested before summer rather than after. A battery that reads 12.4 volts at rest can still fail its load test, and the load test is the one that predicts the morning it does not start.

