HP 540 Laptop AC Adapter < HP < Laptop Laptop AC Adapter < Battery Store
A new HP 540 charger usually maintains a discharged condition with very low capacity. It is highly recommended to fully charge new 540 battery charger packs before using. You can refer to the users' guide of your electronic device for charging instructions.
A new HP Laptop AC Adapter pack needs to be circled (fully discharged and recharged) three to five times to reach its optimum performance.
Rechargeable HP 540 Laptop AC Adapter will undergo self-discharging when left unused for a long period of time. Thus, it should always be stored in a fully charged state and kept in a cool, dry and clean place.
To maintain the optimum performance of a HP 540 battery charger pack, it is highly recommended to circle (fully discharging and recharging) it at least once a month.
It is normal if a new 540 Laptop AC Adapter gets warm when being charged or used. However, please pay special attention if the HP Laptop AC Adapter pack becomes excessively hot. This may indicate there is a problem with the charging circuit of the electronic device. Please consult a qualified technician if necessary.
New HP 540 ac adapter are hard to be charged. Sometimes, your electronic device may indicate a fully charged condition about 10 to 15 minutes when the new battery pack is being charged for the first time. When this happens, remove the battery pack and let it cool down for about 10 to 15 minutes then repeat the charging procedure. Sometimes, a new 540 laptop battery charger will suddenly refuse to be charged. If this happens, a suggested solution is trying to remove the battery from the device and insert it again.
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