Patent ID: 9643506
Date: 2017-05-09
CPC Classifications: B60L,H02J,H05B,Y02B,Y02T

Claim:
1. A portable backup charger, comprising: a battery pack having at least one battery cell; at least one output port coupled to the battery pack, wherein the battery pack is configured to output a first current through one or more output ports of the at least one output port in a first operating mode; a pair of output terminals coupled to the battery pack and having a current path to the battery pack different from that of the at least one output port to the battery pack, wherein the battery pack is configured to output a second current capable of starting a vehicle engine through the pair of output terminals in a second operating mode, wherein the second current is higher than the first current; a first protection circuit coupled to the battery pack and configured to protect the battery pack when the battery pack is working in the first operating mode; and a second protection circuit coupled to the battery pack and configured to prevent overcurrent condition of the second current when the battery pack is working in the second operating mode.