Patent ID: 11876395
Assignee: DEERE & COMPANY
Field: Transport (Mechanical engineering)
Classification: CPC B  H  Y | IPC B  H

Claim 3:
4. A tractor battery charging module, comprising:
a tractor electrical system connected to a portable battery for a handheld battery powered tool; the tractor electrical system charging the portable battery in a first mode and the portable battery charging a tractor battery in the tractor electrical system in a second mode; and the portable battery providing power to the tractor battery in a third mode if a voltage level of the tractor electrical system is below a set threshold needed to support a quiescent current requirement of the tractor electrical system when the tractor is not operating; and
a microprocessor connected to the tractor electrical system and the portable battery that disables charging in the first mode if the portable battery is above a maximum charge level, and disables charging in the second mode if the portable battery charge is below a minimum charge level; and disables charging in the third mode if the quiescent current decreases below a set threshold.