Exhibit 99.1

Disclaimer GeneralThe information contained in this presentation does not purport to be all inclusive or to contain all information that prospective investors may require. Prospective investors are encouraged to conduct their own analysis and review of information contained in this presentation as well as important additional information through the Securities and Exchange Commission’s (“SEC”) EDGAR system at www.sec.gov and on our website at www.eltek.nistec.comForward Looking StatementsCertain information contained in this Supplemental Information Package constitute forward-looking statements within the meaning of the federal securities laws.Although Eltek Ltd. believes that the expectations reflected in such forward-looking statements are based upon reasonable assumptions, no assurance can be given that these expectations will be achieved.Factors that could cause actual results to differ materially from current expectations include changes in macro-economic conditions, the demand for our products, raw materials shortages, the impact of Covid-19, the implementation of our international sales initiatives, and other risks, which are described in Eltek Ltd.’s filings with the Securities and Exchange Commission. Basis of PresentationGAAPUnless otherwise stated, all historical and estimated future financial and other information included in this presentation have been prepared in accordance with generally accepted accounting principles in the United States (“GAAP”).Non-GAAPIn addition to using financial measures prescribed by GAAP, we use non-generally accepted accounting principles (“non-GAAP”) financial measures in this presentation. A reconciliation of historical non-GAAP financial measures to their most directly comparable GAAP measures, can be found at https://www.nisteceltek.com/wp-content/uploads/2021/08/ELTEK-PR-Q2-2021-FINAL.pdf Industry and Market Data Certain data included in this presentation has been derived from a variety of sources, including independent industry publications, government publications and other published independent sources. Although we believe that such third-party sources are reliable, we have not independently verified, and take no responsibility for, the accuracy or completeness of such data.

Eltek History & Overview Founded in 1970, Eltek is a global PCB manufacturer. We have 50 years of experience in the space, a wealth of key engineering talent, and additional capacity in our facility tohouse immediate growth. Petach Tikva,IsraelLocation 100,000 ft2Facility Size $36.7MRevenues 2020 NADCAP, AS9100D, ISO9001:2015, UL 94V-0Key Qualifications Main Products 65% 30% 5% Flex-Rigid Rigid Multi-Flex/Flex < 800,000 PCBs Manufactured Annually 248 Employees (40 Engineers) 1970 Established by Koor Ltd and Elbit Ltd. 1997 IPO on NASDAQ (ELTK) 2008 Established USA HQApproved MLA for ITAR 2013 Nistec control of Eltek 2018 Key management restructuring Implemented Achieve CompetitiveExcellence & Turnaround Plan

Where Eltek PCBs are Used

Where We Shine Eltek is a leading global manufacturer of quality and highly-reliable printed circuit boards (PCBs)—creating rigid, flex-rigid, and flex PCBs for use in a variety of industries, including Aerospace, Military, Medical, Satellite, and many others. Strong Portfolio of OEM Customers We are an end-to-end manufacturer, beginning with custom prototyping and PCB design, into full scale development. All other logos and trademarks are the property of the respective trademark owners

Since 2009, Western PCB Manufacturing Market Share has shrunk ~66% Source: Cluster Consulting Group PCB manufacturers in the West have disappeared—leaving global manufacturing highly concentrated in China and Taiwan. China’s PCB dominance and global security issues have caused western government and companies avoiding Chinese PCBs. Additionally, regulatory trends in Israel are seeking to move the $60 million annual PCB imports to domestic suppliers. PCB Manufacturing by Region, 2020

High Barriers for New Entrants in PCB Production Technical “Know-How” There are no university degrees for PCB production, engineers become experts in PCBs on the job and advance over time Machine Infrastructure Cost$35m+ machine and infrastructure investment is needed to start a small PCB manufacturing operation Time to Build & AccelerateFrom concept to significant PCB production, a new operation requires a minimum of 4-5 years for a small producer to get up and running The Western world is looking to shift back to purchasing Western produced PCB’s, but there are high technical barriers to entry to create new manufacturers and supply.

R&D programs in partnership with Israeli innovation authorities. Developing unique, high-end, advanced PCBs. Growing to Satisfy Market Appetite Unlocking 30% in additional productioncapacity via a 3rd shift in Petach Tikva facility. Vertical and Horizontal mergers can fuel growth, both domestically and internationally. New Eltek advanced PCB facility set to open in Northern Israel in coming years.

What Makes Eltek Unique 50 years of operational history developing PCBs ITAR and EAR CertificationsCertifications allow Eltek to sell to defense contractors and other companies in the United States Pioneers inFlex PCBsEltek is a brand-name in the Flex PCB market, trusted by leading brands around the world ConstantR&D Bringing advanced tech (complex and organic PCBs) currently reserved for the largest corporations, to a broader market High-Mix,Low-VolumeOur proprietary production techniques allows us to serve lower minimum order quantities and a broader customer segment

Total Available Market Global PCBs, 2027Growing at a 4.8% CAGR $76B Serviceable Addressable Market Global Flex-Rigid PCBs, 2025Growing at a 9.8% CAGR $7.5B Massive Global Opportunity Size ReportLinker, Research & Markets 10 $87M Serviceable Obtainable Market 2 Eltek Facilities (max production capability) $36.7M Current Eltek RevenueSingle Facility at 70% Capacity

Generating Profits in a Capital Intensive Industry Rigid PCB Manufacturing consistently covers a majority of our costs Breakeven Point Complex Flex PCB Manufacturing with 50%+ Positive Contribution Rigid PCB manufacturing supports the capital intensive fixed costs of our facility, machinery, and staffing—ensuring that Eltek reaches its break even point. Eltek’s Flex PCB manufacturing generates high profit margins on more complex products. As a result, incremental Flex PCB production is highly-profitable, price-elastic, and fuels market share growth. Sales Volume

Setting the Stage for Rampant Growth In 2018, newly hired Eltek management led a turnaround plan and implementation of “Achieving Competitive Excellence”. Our turnaround targeted higher operational efficiency by reducing fixed costs and improving our pricing strategy. Since 2019, we have been able to maintain profitable operations and positive cash flow. Overall, we have lowered our breakeven point,while increasing our profit per unit manufactured. PROFIT (K$) Today’s Breakeven Point Our PastBreakeven Point SALES (K$) 2018-2021+ 2016-2018(Before) (BEP)

Eltek Growth Pillars Business Excellence Operational Efficiency Market Share Expansion Right pricing Adopt Achieve Competitive Excellence program (ACE-similar to 6-sigma) Focus on US market Product rationalization Look for M&A Expand capacity Trade PCB FMF between USA and Israel Add technical capabilities Participate in government-to-government Offset Program ROI focused decision making Restructure balance sheet Use big data technology for PCB engineering

Mirrored to Global Demand of High Reliability, Miniaturization, Faster Data Traffic, and High Power Our R&D Roadmap 2021/22Fine line X-ray assisted drillingPersonalized productionImproved inner layer registration [H1 2022] Transparent & stretchable PCB’s [H2 2022]Ultra precise drilling [H2 2022] 2020Hi speed/frequency PCB’sPTFE fusion bonding technologyAdvanced raw material implementationDevelop ENEPIG technology capability 2023IC packages [H1 2023]Substrates:Ultra thin boards 0.4 mm Dense topography [H1 2023]Buried/blind/micro [H2 2023]Dense and thin conductors 25μ/25μ line space [H2 2023] 2018-2019HDI VIA COPPER FILLINGBuried/Blind-filled Non-conductive PasteDynamic Rigid/Flex designsHigh-end Rigid/Flex Bookbinder GOALComprehensive manufacturing capabilities of:5/6G ProductsIC/SOM packages

Experienced Leadership Team Joined Eltek as CEO in July 2018. Prior, Eli served as the CEO of Carmel Forge Ltd. (Aerospace), and prior thereto he served as the CEO of Urdan Industries Ltd. (Defense). Holds a B.Sc. degree from the Technion-Israel Institute of Technology, M.Sc. in Mechanical Engineering from Tel Aviv University, and an MBA in Finance & Marketing from Bar-Ilan University. Eli YaffeCEO Joined Eltek in January 2019. From 2007 to 2018 , Alon served as the CFO of Mer Telemanagement Solutions Ltd., a company traded on NASDAQ. Prior thereto and from 2005, Mr. Mualem served as the CFO of Xfone Inc. and Xfone 018 Ltd., a communications company dually listed in the US (AMEX) and Israel (TASE). Alon MualemCFO Joined Eltek as VP of Worldwide Sales and Marketing in May 2020. Oriel has over 25 years of sales experience in the semiconductor industry. Previously, he held various positions including VP Sales and Marketing, senior account executive and sales director at Tritech Ltd., a distribution company in Israel. Oriel SallaryVP, Worldwide Sales and Marketing Joined Eltek in September 2018 as VP operations. Prior, Mr. Zemach served as the Plant Manager at “Kahane Group” for 6 years, leading all supply-chain processes—and has spent over 15 years in electronic parts manufacturing overall. Holds a B.Sc. degree in Electronic Engineering from Ariel University, and an MBA in IT from Bar Ilan University. Itzik ZemachVP Operations

By Sector 2020 Revenues By Geography

Financial Snapshot Revenues Net Profit (loss) Gross Profit H1 2021 $16.3MRevenues $3.5MGross Profit $1.1MOperating Profit $1.0MNet Profit $2.0MEBITDA Eltek uses EBITDA as a non-GAAP financial performance measurement. Reconciliation between the company's results on a GAAP and non-GAAP basis is provided in our quarterly financial press release.

Company Capitalization Nistec 3,891,596 66.6% Yitzhak Nissan (Chairman) 174,316 3.0% Total Nistec and Yitzhak Nissan 4,065,912 69.6% Public Float 1,774,445 30.4% Total 5,840,357 100.0% As of June 30, 2021 Eltek has 5,840,357 issued and outstanding shares: As of June 30, 2021 Eltek has granted 304,733 Options (WAEP: $4.84)No outstanding warrants.

www.nisteceltek.com ManufacturingEltek Ltd.20 Ben Zion Gelis Street Petach Tikvah, 4927920, IsraelTel: +972 3 939 5050Fax: +972 3 9342584Email: main@nisteceltek.com Customer ServiceSales – EngineeringEltek USA Inc.250 Commercial Street Suite 3010Manchester, New Hampshire, USAPhone: (603) 965-4321Email: info@eltek.us Contact Us 19