Commercial Fixed Wing
Maintenance Airframe; Maintenance Powerplant
Confusion
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Published Material / Policy
General Maintenance Action
ATC Equipment / Nav Facility / Buildings; Human Factors; Environment - Non Weather Related; Company Policy
Aircraft X Battery was replaced due to the log book write up; low voltage; APU would not start with low battery voltage.Storage procedure required battery disconnect not to drain down. Believe this would have occurred sometime.These aircraft were parked due to unusual circumstances. Procedures were changing often. I hope a job card is developed to eliminate any future confusion.
Technician reported an aircraft battery had to be replaced due to incorrect storage procedure.