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11.4 Calibration of the extended battery
If after a full charging cycle of the extended battery, the battery
indicator does not display the maximal charging level, consider
calibrating the extended battery packs.
For such calibration, only use the specific HAMILTON MEDICAL
external Li-ion battery charger and calibrator for this device.
11.5 Storage
To maintain the battery charge and to prolong the life of the
batteries, keep the ventilator connected to AC power. Have the
batteries recharged every 3 to 9 months, depending on storage
conditions (see Appendix A, Specifications).
11.6 Repacking and shipping
If you must ship the ventilator, use the original packing
materials. If these materials are not available, contact your
HAMILTON MEDICAL representative for replacement materials.