<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:ns2="http://www.sec.gov/edgar/common">
    <headerData>
        <submissionType>144</submissionType>
        <filerInfo>
            <filer>
                <filerCredentials>
                    <cik>0001942459</cik>
                    <ccc>XXXXXXXX</ccc>
                </filerCredentials>
            </filer>
            <liveTestFlag>LIVE</liveTestFlag>



        </filerInfo>
    </headerData>
    <formData>
        <issuerInfo>
            <issuerCik>0001899287</issuerCik>
            <issuerName>AMPRIUS TECHNOLOGIES INC</issuerName>
            <secFileNumber>001-41314</secFileNumber>
            <issuerAddress>
                <ns2:street1>1180 Page Avenue</ns2:street1>
                <ns2:city>Fremont</ns2:city>
                <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                <ns2:zipCode>94538</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>8004258803</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>JONATHAN BORNSTEIN</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
            <relationshipsToIssuer>
                <relationshipToIssuer>Officer</relationshipToIssuer>
            </relationshipsToIssuer>
        </issuerInfo>
        <securitiesInformation>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <brokerOrMarketmakerDetails>
                <name>Morgan Stanley Smith Barney LLC Executive Financial Services</name>
                <address>
                    <ns2:street1>1 New York Plaza</ns2:street1>
                    <ns2:street2>8th Floor</ns2:street2>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10004</ns2:zipCode>
                </address>
            </brokerOrMarketmakerDetails>
            <noOfUnitsSold>125983</noOfUnitsSold>
            <aggregateMarketValue>326295.97</aggregateMarketValue>
            <noOfUnitsOutstanding>91597817</noOfUnitsOutstanding>
            <approxSaleDate>04/02/2024</approxSaleDate>
            <securitiesExchangeName>NYSE</securitiesExchangeName>
        </securitiesInformation>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>04/02/2024</acquiredDate>
            <natureOfAcquisitionTransaction>Exercise of Stock Options</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>125983</amountOfSecuritiesAcquired>
            <paymentDate>04/02/2024</paymentDate>
            <natureOfPayment>Cash</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for JONATHAN BORNSTEIN</name>
                <address>
                    <ns2:street1>1180 Page Avenue</ns2:street1>
                    <ns2:city>Fremont</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>94538</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>03/06/2024</saleDate>
            <amountOfSecuritiesSold>40200</amountOfSecuritiesSold>
            <grossProceeds>111579.12</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for JONATHAN BORNSTEIN</name>
                <address>
                    <ns2:street1>1180 Page Avenue</ns2:street1>
                    <ns2:city>Fremont</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>94538</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>03/05/2024</saleDate>
            <amountOfSecuritiesSold>109800</amountOfSecuritiesSold>
            <grossProceeds>320462.28</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for JONATHAN BORNSTEIN</name>
                <address>
                    <ns2:street1>1180 Page Avenue</ns2:street1>
                    <ns2:city>Fremont</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>94538</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>02/06/2024</saleDate>
            <amountOfSecuritiesSold>150000</amountOfSecuritiesSold>
            <grossProceeds>663810.00</grossProceeds>
        </securitiesSoldInPast3Months>
        <noticeSignature>
            <noticeDate>04/02/2024</noticeDate>
            <planAdoptionDates>
                <planAdoptionDate>05/12/2023</planAdoptionDate>
            </planAdoptionDates>
            <signature>/s/ Jonathan Bornstein</signature>
        </noticeSignature>
    </formData>
</edgarSubmission>
[{"type": "144", "sequence": "1", "filename": "primary_doc.xml", "secsgml_size_bytes": 5443}]
144
0001942459
XXXXXXXX
LIVE
0001899287
AMPRIUS TECHNOLOGIES INC
001-41314
1180 Page Avenue
Fremont
CA
94538
8004258803
JONATHAN BORNSTEIN
Officer
Common
Morgan Stanley Smith Barney LLC Executive Financial Services
1 New York Plaza
8th Floor
New York
NY
10004
125983
326295.97
91597817
04/02/2024
NYSE
Common
04/02/2024
Exercise of Stock Options
Issuer
N
125983
04/02/2024
Cash
N
10b5-1 Sales for JONATHAN BORNSTEIN
1180 Page Avenue
Fremont
CA
94538
Common
03/06/2024
40200
111579.12
10b5-1 Sales for JONATHAN BORNSTEIN
1180 Page Avenue
Fremont
CA
94538
Common
03/05/2024
109800
320462.28
10b5-1 Sales for JONATHAN BORNSTEIN
1180 Page Avenue
Fremont
CA
94538
Common
02/06/2024
150000
663810.00
04/02/2024
05/12/2023
/s/ Jonathan Bornstein