Patent ID: 11876190
Assignee: MAKITA CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G  Y | IPC G  H

Claim 1:
2. A battery pack comprising:
a battery; and
a controller provided with a counter value, the controller being configured to:
calculate an addition value during discharge of the battery in accordance with a total number of uses of the battery pack under a specified condition;
update the counter value by adding the addition value during the discharge of the battery; and
prohibit the discharge of the battery during the discharge of the battery in response to the counter value reaching a protection threshold,

the total number of uses including a first number of operations,
the first number of operations corresponding to a total number of operations of the battery pack having the counter value exceeding an overload threshold, and
the overload threshold being set to be smaller than the protection threshold.