what the reasons?
1, First check whether the Dell TM9HP laptop laptop battery settings disabled battery charging, and some other Dell TM9HP laptop battery management software also disable the charging function, we can check;2,It may be because the Dell TM9HP battery put too long useless lead to poor contact, it is recommended to open the laptop clear gray, the power cord and the Dell TM9HP battery unplug, and then plug may also be able to solve.
3,If found no problem after the check, then most of the laptop win7/8/9/10 system battery internal control circuit or Dell TM9HP battery problems, you need to take over maintenance.
4, When some Dell TM9HP laptop batteries used for a long time, resulting in over discharge, 0% of the available power has been connected is not charging, take maintenance later, even if repaired will not long life, it is best to buy a new Dell TM9HP laptop battery.
5, The Dell TM9HP battery for a long time to place, do not use it, leading to Dell TM9HP battery over-discharge and cause damage to the battery, it is recommended to update the Dell TM9HP battery management driver to the latest version, replace the battery mode options and then recharge to try;
6, Change the power mode, still can not charge, can only be to Dell after-sales service station for repair.
PS: we need to pay attention to the purchase of new Dell laptop batteries, according to their own Dell TM9HP laptop brand model selection of compatible batteries, the best choice of original Dell TM9HP battery.
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