Handheld flashlight

A handheld flashlight comprising:

• a hollow cylinder having a first end and a second end;
• a rechargeable battery disposed within the hollow cylinder;
• a lamp head disposed at the first end of the hollow cylinder and comprising a light source;
• a mounting cap disposed at the second end of the hollow cylinder, wherein the mounting cap comprises a charging-discharging port configured to receive power from an external source to charge the rechargeable battery, and a connection port configured to deliver power from the rechargeable battery to an external vehicle battery, the charging-discharging port and the connection port being provided via one or more access openings in the mounting cap;
• a first circuit configured to direct power from the rechargeable battery to the light source, the charging-discharging port, and the connection port;
• and
• a second circuit configured to direct power from the external power source to the rechargeable battery through the charging-discharging port;
• wherein the first circuit is further configured to control distribution of power from the rechargeable battery such that a greater amount of power is provided to the connection port for jumpstarting a vehicle than to the light source and/or a device connected to the charging-discharging port;
• and wherein the handheld flashlight is of such compact size and low weight as to be suitable for single-handed portable operation by a user.