HTV-1 launched on Sep 10, 2009 aboard H-IIB Japanese launcher to ISS, carrying the SMILES and HREP payloads.

HTV-2 was launched on Jan 22, 2011 to the ISS carrying the CTC-4 and FHRC payloads.

HTV-3 was launched on July 21, 2012 carrying the SCaNTestbed and MCE payloads to the ISS.

HTV-4 was launched on Aug 3, 2013 carrying the STP-H4, MBSU and UTA payloads to the ISS.

HTV-5 was launched on Aug 19, 2015 carrying the CALET payload to the ISS.

Kounotori HTV-6 launched on Dec 9, 2016 carrying the Exposed Pallet with 6 new lithium-ion batteries to upgrade the S4 truss power channels.

Kounotori HTV-7 Japanese cargo ship was launched on Sep 22, 2018 carrying the Exposed Pallet with 6 lithium-ion batteries to the ISS to upgrade the P4 truss power channels.

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AXMHTV-7EP_manual

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The Exposed Pallet 7 was removed by the Canadarm2 and transferred to the Mobile Base System. An EVA was planned to install the new lithium-ion batteries on ISS, but due to the failure of Soyuz MS-10, the EVA was not performed and the pallet remained on ISS after HTV-7 was released with an empty cargo. The pallet was eventually moved temporarily to the Japanese Exposed Facility.

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Kounotori HTV-8 was launched on Sep 24, 2019 carrying 6 new lithium-ion batteries to the ISS. These batteries will upgrade the P6 truss power channels from their original nickel hydrogen batteries.

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Launch Site: Tanegashima, Japan

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Launch Vehicle: HII-B rocket

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The Exposed pallet from HTV-8 was extracted by Canadarm 2 and attached to the MBS/POA.

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Departure: The Exposed pallet 7 with old batteries that has been held by the Japanese Remote Arm was handed over to the Canadarm 2 in order to be placed in the Unpressurized Logistics carrier of HTV-8 to be discarded during re-entry.

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Kounotori HTV-9 was launched on May 20, 2020 carrying 6 new lithium-ion batteries to the ISS. These batteries will upgrade the S6 truss power channels from their original nickel hydrogen batteries.

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Launch Site: Tanegashima, Japan

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Launch Vehicle: HII-B rocket (last flight)

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The Exposed pallet from HTV-9 was extracted by Canadarm 2 and attached to the MBS/POA.

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Departure:  On Aug 18, 2020 the old Exposed pallet 8 with old batteries was placed back in the unpressurized compartment of HTV-9 for disposal during re-entry. The HTV-9 pallet with old batteries was jettisoned from the station by the Canadarm2 into space on March 11, 2021.