Chauffeur duty means hours at idle
An MPV bought for executive transport spends much of its day waiting outside hotels, offices and airports with the engine running so the cabin stays cool for the next passenger. The alternator produces little at idle while the air conditioning and cabin equipment keep drawing, and the battery slowly runs down across a shift. For a Huasong 7 used this way, a test at every service and a replacement matched to the original capacity make more sense than waiting for a no-start at the kerb.
