Frequent loading can keep lighting and other systems active for long periods. A battery complaint needs the actual duty cycle recorded rather than assuming abnormal drain while the vehicle is locked and asleep.
Describe the working day
Note door-open time, lighting type, added equipment and journey duration. Distinguish normal work use from overnight parked behaviour. Check the vehicle and conversion instructions for intended load-area controls.
Do not fit larger fuses or bypass timers to solve the problem. A workshop should assess demand, supply condition and any conversion wiring. The appropriate solution depends on the measured use and supported installation, not simply replacing a battery each time the same working pattern leaves it discharged.
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