{"id":1282,"date":"2026-07-09T16:15:00","date_gmt":"2026-07-09T08:15:00","guid":{"rendered":"https:\/\/www.kbtbattery.com\/?p=1282"},"modified":"2026-07-09T17:28:09","modified_gmt":"2026-07-09T09:28:09","slug":"custom-lithium-battery-pack-design-guide","status":"publish","type":"post","link":"https:\/\/www.kbtbattery.com\/zh\/2026\/07\/09\/custom-lithium-battery-pack-design-guide\/","title":{"rendered":""},"content":{"rendered":"\n<style data-wp-block-html=\"css\">\n.kbt-article {\n    color: #17202a;\n    font-family: Arial, Helvetica, sans-serif;\n    font-size: 16px;\n    line-height: 1.68;\n  }\n\n  .kbt-article * {\n    box-sizing: border-box;\n  }\n\n  .kbt-article a {\n    color: #0969da;\n    text-decoration: underline;\n    text-underline-offset: 3px;\n  }\n\n  .kbt-article p {\n    margin: 0 0 16px;\n    color: #344451;\n  }\n\n  .kbt-article h1 {\n\n    margin: 10px 0 14px;\n    color: #17202a;\n    font-size: 42px;\n    line-height: 1.1;\n    letter-spacing: 0;\n  }\n\n  .kbt-article h2 {\n    margin: 46px 0 14px;\n    color: #17202a;\n    font-size: 28px;\n    line-height: 1.2;\n    letter-spacing: 0;\n  }\n\n  .kbt-article strong {\n    color: #17202a;\n  }\n\n  .kbt-article ul,\n  .kbt-article ol {\n    margin: 0 0 18px;\n    padding-left: 22px;\n    color: #344451;\n  }\n\n  .kbt-article li {\n    margin: 7px;\n  }\n\n  .kbt-article table {\n    width: 100%;\n    margin: 22px 0;\n    border-collapse: collapse;\n    font-size: 15px;\n  }\n\n  .kbt-article th,\n  .kbt-article td {\n    padding: 11px;\n    border: 1px solid #d7e1e8;\n    vertical-align: top;\n    text-align: left;\n  }\n\n  .kbt-article th {\n    background: #f5f8fa;\n    color: #17202a;\n  }\n\n  .kbt-hero {\n    padding-bottom: 24px;\n    margin-bottom: 30px;\n    border-bottom: 1px solid #d7e1e8;\n  }\n\n  .kbt-eyebrow {\n    color: #b7352d;\n    font-size: 13px;\n    font-weight: 700;\n    letter-spacing: .04em;\n    text-transform: uppercase;\n  }\n\n  .kbt-dek {\n    max-width: 850px;\n    color: #667789;\n    font-size: 19px;\n  }\n\n  .kbt-meta,\n  .kbt-tags,\n  .kbt-toc-list {\n    display: flex;\n    flex-wrap: wrap;\n    gap: 8px;\n    margin: 16px 0 0;\n    padding: 0;\n    list-style: none;\n  }\n\n  .kbt-meta span,\n  .kbt-tag {\n    display: inline-flex;\n    align-items: center;\n    border: 1px solid #d7e1e8;\n    border-radius: 999px;\n    background: #f5f8fa;\n    padding: 5px 10px;\n    color: #304454;\n    font-size: 13px;\n    line-height: 1.35;\n  }\n\n  .kbt-toc {\n    margin-top: 18px;\n    padding-top: 14px;\n    border-top: 1px solid #d7e1e8;\n  }\n\n  .kbt-toc strong {\n    display: block;\n    margin-bottom: 8px;\n  }\n\n  .kbt-toc-list a {\n    font-size: 14px;\n  }\n\n  .kbt-quote {\n    margin: 22px 0;\n    padding: 15px 16px;\n    border-left: 4px solid #0a6b5d;\n    background: #eef6ff;\n  }\n\n  .kbt-source-note {\n    color: #667789;\n    font-size: 13px;\n  }\n\n  .kbt-formula {\n    margin: 20px 0;\n    padding: 14px 16px;\n    border: 1px solid #ead6a9;\n    border-radius: 6px;\n    background: #f7efe0;\n    color: #17202a;\n    font-weight: 700;\n  }\n\n  .kbt-mini-grid {\n    display: grid;\n    grid-template-columns: repeat(2, minmax(0, 1fr));\n    gap: 14px;\n    margin: 20px 0;\n  }\n\n  .kbt-mini-card {\n    padding: 15px;\n    border: 1px solid #d7e1e8;\n    border-radius: 6px;\n    background: #fff;\n  }\n\n  .kbt-mini-card strong {\n    display: block;\n    margin-bottom: 6px;\n  }\n\n  .kbt-checklist {\n    columns: 2;\n    column-gap: 34px;\n  }\n\n  .kbt-divider {\n    margin: 54px 0;\n    border: 0;\n    border-top: 1px solid #d7e1e8;\n  }\n\n  .kbt-zh {\n    font-family: \"Microsoft YaHei\", \"PingFang SC\", Arial, sans-serif;\n  }\n\n  .kbt-strategy-note {\n    margin-top: 34px;\n    padding-top: 18px;\n    border-top: 1px solid #d7e1e8;\n    color: #344451;\n  }\n\n  @media (max-width: 860px) {\n    .kbt-article h1 {\n      font-size: 32px;\n    }\n\n    .kbt-article h2 {\n      font-size: 24px;\n    }\n\n    .kbt-mini-grid {\n      grid-template-columns: 1fr;\n    }\n\n    .kbt-checklist {\n      columns: 1;\n    }\n  }\n.kbt-article h2[id] {\n  scroll-margin-top: 120px;\n}\n\n@media (max-width: 860px) {\n  .kbt-article h2[id] {\n    scroll-margin-top: 92px;\n  }\n}\n<\/style>\n\n<script data-wp-block-html=\"js\">\n(function () {\n    var article = document.querySelector('.kbt-article');\n    if (!article) return;\n\n    article.addEventListener('click', function (event) {\n      var link = event.target.closest('a[href^=\"#\"]');\n      if (!link || !article.contains(link)) return;\n\n      var id = link.getAttribute('href').slice(1);\n      if (!id) return;\n\n      var target = document.getElementById(id);\n      if (!target || !article.contains(target)) return;\n\n      event.preventDefault();\n\n      var offset = window.matchMedia('(max-width: 860px)').matches ? 92 : 120;\n      var top = target.getBoundingClientRect().top + window.pageYOffset - offset;\n\n      window.scrollTo({\n        top: top,\n        behavior: 'smooth'\n      });\n\n      history.pushState(null, '', '#' + id);\n    });\n  })();\n<\/script>\n\n<div class=\"kbt-article\">\n  <header class=\"kbt-hero\">\n    <div class=\"kbt-eyebrow\">KBT Battery Technical Blog Draft<\/div>\n    <h1>Custom Lithium Battery Pack Design Guide for OEM Projects: Voltage, Capacity, BMS, Connector and Certification<\/h1>\n    <p class=\"kbt-dek\">A buyer-focused guide for engineers and sourcing teams who need a real battery pack specification before asking for price, samples, tooling, or shipping documents.<\/p>\n\n    <div class=\"kbt-meta\" aria-label=\"Article information\">\n      <span>English article: about 2,400 words<\/span>\n      <span>Reading time: 10 minutes<\/span>\n      \n    <\/div>\n\n    <div class=\"kbt-tags\" aria-label=\"Topic tags\">\n      <span class=\"kbt-tag\">Custom lithium battery pack<\/span>\n      <span class=\"kbt-tag\">OEM battery pack<\/span>\n      <span class=\"kbt-tag\">Small batch battery pack<\/span>\n      <span class=\"kbt-tag\">Battery pack with BMS<\/span>\n      <span class=\"kbt-tag\">18650 \/ 21700 \/ LiPo<\/span>\n      <span class=\"kbt-tag\">Cable and connector<\/span>\n      <span class=\"kbt-tag\">Terminal wire<\/span>\n      <span class=\"kbt-tag\">UN38.3 \/ MSDS \/ UL \/ CE<\/span>\n    <\/div>\n\n    <nav class=\"kbt-toc\" aria-label=\"Article anchors\">\n      <strong>On this page<\/strong>\n      <ol class=\"kbt-toc-list\">\n        <li><a href=\"#spec-first\">Start with the specification<\/a><\/li>\n        <li><a href=\"#voltage\">Voltage: nominal, full charge, series count<\/a><\/li>\n        <li><a href=\"#capacity\">Capacity, Wh, current, runtime<\/a><\/li>\n        <li><a href=\"#cell\">Cell type and pack format<\/a><\/li>\n        <li><a href=\"#bms\">BMS, protection, and charger match<\/a><\/li>\n        <li><a href=\"#mechanical\">Cable, connector, enclosure details<\/a><\/li>\n        <li><a href=\"#documents\">UN38.3, MSDS, UL, CE<\/a><\/li>\n        <li><a href=\"#rfq\">RFQ checklist<\/a><\/li>\n      <\/ol>\n    <\/nav>\n  <\/header>\n\n  <p>A custom lithium battery pack should be designed from the device outward, not from a catalog model inward. If the application needs a different size, connector, discharge current, protection circuit, waterproof structure, label, or shipping document, the battery supplier needs more than &#8220;12V 5Ah&#8221; to quote accurately.<\/p>\n\n  <p>KBT Battery manufactures <a href=\"https:\/\/www.kbtbattery.com\/products\/\">lithium battery pack products<\/a> for OEM and small-batch projects, including lithium-ion battery packs, lithium polymer battery packs, cylindrical lithium-ion rechargeable battery packs, 3.7V, 7.4V, 12V, 14.4V, 24V, and 36V packs, outdoor waterproof batteries, power tool batteries, motorcycle starting batteries, high-drain RC LiPo packs, and NiMH battery packs. KBT product materials also show support for customized cell type, packing way, BMS, cable, connector, terminal wire, and battery tip.<\/p>\n\n  <p>This guide is written for global B2B buyers who want to send a clearer RFQ to a factory. It also covers long-tail terms that many broad battery articles miss: <strong>custom lithium battery pack with cable and connector<\/strong>, <strong>small batch OEM lithium battery pack with BMS<\/strong>, <strong>same-end positive and negative terminal battery pack<\/strong>, <strong>DC5521 lithium battery pack<\/strong>, <strong>EC5 RC LiPo battery pack<\/strong>, and <strong>UN38.3 MSDS UL CE lithium battery supplier<\/strong>.<\/p>\n\n  <h2 id=\"spec-first\">1. Start with the Specification, Not the Price<\/h2>\n  <p>A low-quality battery inquiry asks, &#8220;How much is a 12V lithium battery?&#8221; A useful OEM inquiry says, &#8220;We need a 12V lithium battery pack for an outdoor device, 8Ah target capacity, 3A continuous discharge, DC5521 output, limited case space, UN38.3 and MSDS required for export, sample quantity first.&#8221;<\/p>\n\n  <p>The second inquiry gives a factory enough information to check cell format, BMS rating, wire size, connector fit, pack dimensions, and document availability. It also helps decide whether the buyer should use an existing <a href=\"https:\/\/www.kbtbattery.com\/products\/\">KBT Battery pack model<\/a>, modify a standard pack, or develop a new OEM battery pack.<\/p>\n\n  <p>Here is the difference in practice. &#8220;Need 7.4V battery&#8221; leaves too many questions open. &#8220;Need a 7.4V 5000mAh Li-ion or LiPo pack, max size 70 x 45 x 20 mm, 5A continuous discharge, JST or custom plug&#8221; gives the factory a starting point. &#8220;Need battery with BMS&#8221; is also too broad; a better request would define the series count, continuous current, peak current, required protections, and charger. For export projects, the inquiry should also mention whether UN38.3, MSDS\/SDS, UL, or CE documents are needed for the proposed model.<\/p>\n\n  <h2 id=\"voltage\">2. Voltage: Nominal Voltage, Full Charge Voltage, and Series Count<\/h2>\n  <p>Voltage is not one number. A lithium-ion cell is commonly described by nominal voltage, while charger voltage is based on the fully charged cell voltage. KBT product materials list 4.2V chargers for lithium-ion cells and 3.65V chargers for compatible cells such as LiFePO4-type applications. That difference matters when the buyer chooses a charger or designs the host device.<\/p>\n\n  <table>\n    <thead>\n      <tr>\n        <th>Pack description<\/th>\n        <th>Typical structure<\/th>\n        <th>Why buyers search for it<\/th>\n        <th>KBT-related keyword opportunity<\/th>\n      <\/tr>\n    <\/thead>\n    <tbody>\n      <tr>\n        <td>3.7V lithium battery pack<\/td>\n        <td>1S Li-ion or LiPo pack<\/td>\n        <td>Small electronics, handheld devices, compact battery compartments.<\/td>\n        <td>3.7V lithium battery pack with cable, 3.7V LiPo battery pack with protection circuit.<\/td>\n      <\/tr>\n      <tr>\n        <td>7.4V lithium battery pack<\/td>\n        <td>2S Li-ion or LiPo pack<\/td>\n        <td>Portable instruments, RC applications, lighting, two-cell devices.<\/td>\n        <td>7.4V rechargeable lithium battery pack with connector, 2S OEM battery pack.<\/td>\n      <\/tr>\n      <tr>\n        <td>11.1V \/ 12V lithium battery pack<\/td>\n        <td>Often 3S Li-ion for 11.1V nominal, or other chemistry depending on requirement.<\/td>\n        <td>DC equipment, outdoor devices, tools, control systems, replacement projects.<\/td>\n        <td>custom 12V lithium battery pack with BMS, 12V battery pack with terminal wire.<\/td>\n      <\/tr>\n      <tr>\n        <td>12.8V lithium battery pack<\/td>\n        <td>Often 4S LiFePO4-type nominal pack.<\/td>\n        <td>Projects that specify 12.8V nominal voltage and different lithium chemistry behavior.<\/td>\n        <td>12.8V LiFePO4 battery pack supplier, 12.8V motorcycle starting battery.<\/td>\n      <\/tr>\n      <tr>\n        <td>24V \/ 36V lithium battery pack<\/td>\n        <td>Higher series count pack<\/td>\n        <td>Higher-power portable equipment, tools, mobility and outdoor systems.<\/td>\n        <td>24V lithium battery pack with cable, 36V custom lithium battery pack manufacturer.<\/td>\n      <\/tr>\n    <\/tbody>\n  <\/table>\n\n  <div class=\"kbt-quote\">\n    <p><strong>Practical rule:<\/strong> quote voltage together with charger requirement. A pack label, charger label, and device input rating should not contradict each other.<\/p>\n    <p class=\"kbt-source-note\">This is a design practice note based on pack specification logic, not a regulatory statement.<\/p>\n  <\/div>\n\n  <h2 id=\"capacity\">3. Capacity, Wh, Current, and Runtime<\/h2>\n  <p>Capacity in Ah or mAh tells only part of the story. For comparing battery energy, use watt-hours.<\/p>\n\n  <div class=\"kbt-formula\">Energy (Wh) = Nominal Voltage (V) x Capacity (Ah)<\/div>\n\n  <p>For example, a 7.4V 5Ah battery pack is about 37Wh, while a 12V 5Ah battery pack is about 60Wh if calculated by nominal voltage. Both are &#8220;5Ah,&#8221; but they do not store the same energy. That is why buyers should not compare packs only by Ah.<\/p>\n\n  <p>Current is equally important. A low-current sensor device, a waterproof outdoor device, a power tool battery, a motorcycle starting battery, and a high-drain RC LiPo battery all put different stress on cells, BMS, nickel strip, wire, connector, and heat design. The supplier needs both continuous current and peak current.<\/p>\n\n  <table>\n    <thead>\n      <tr>\n        <th>Parameter<\/th>\n        <th>What to send<\/th>\n        <th>What the factory checks<\/th>\n      <\/tr>\n    <\/thead>\n    <tbody>\n      <tr>\n        <td>Runtime<\/td>\n        <td>Target working time, duty cycle, and standby current if known.<\/td>\n        <td>Capacity, usable energy, cell count, and whether the pack can fit the space.<\/td>\n      <\/tr>\n      <tr>\n        <td>Continuous current<\/td>\n        <td>Normal load current during operation.<\/td>\n        <td>BMS discharge rating, cell discharge ability, wire gauge, connector rating.<\/td>\n      <\/tr>\n      <tr>\n        <td>Peak current<\/td>\n        <td>Startup current, motor start current, or pulse load.<\/td>\n        <td>Whether the BMS trips, whether the cells and connector can handle short bursts.<\/td>\n      <\/tr>\n      <tr>\n        <td>Charging<\/td>\n        <td>Charger voltage, charge current, and whether charger is supplied by buyer or factory.<\/td>\n        <td>Charger compatibility, BMS charge path, connector polarity, and safety margin.<\/td>\n      <\/tr>\n    <\/tbody>\n  <\/table>\n\n  <h2 id=\"cell\">4. Cell Type and Pack Format: 18650, 21700, 26650, LiPo, LiFePO4<\/h2>\n  <p>Cell choice is a trade-off between size, capacity, discharge current, pack shape, cost, availability, and certification path. Competitor articles often say &#8220;choose the right cell,&#8221; but the RFQ still fails if the buyer does not define the enclosure space and current profile.<\/p>\n\n  <p>An <strong>18650 lithium battery pack<\/strong> is often a practical choice when the product can accept cylindrical cells and needs a mature, common pack format. Before sampling, the buyer should confirm how many cells fit, whether the pack is 1S, 2S, 3S or higher, and what continuous current the product needs.<\/p>\n\n  <p>A <strong>21700 lithium battery pack<\/strong> may help when the project benefits from a larger cylindrical cell and the enclosure can accept the diameter. The real question is whether the larger cell saves space overall or creates mechanical conflicts inside the product.<\/p>\n\n  <p>A <strong>26650 lithium battery pack<\/strong> can be useful for designs that need a larger cylindrical format and have enough room for cell support, wire routing, and case structure. For compact products, the larger diameter can quickly become a mechanical constraint.<\/p>\n\n  <p>A <strong>LiPo battery pack<\/strong> is usually considered when the product needs a flat, thin, or shape-sensitive battery solution. For these inquiries, exact length, width, thickness, wire direction, and swelling clearance matter more than a generic capacity request.<\/p>\n\n  <p>A <strong>LiFePO4-type pack<\/strong> may be relevant when the specification calls for 12.8V nominal voltage or a different lithium chemistry profile. In that case, the charger voltage, BMS, cell documentation, and shipment documents should all match the chemistry.<\/p>\n\n  <p>Industry articles correctly note that a higher-capacity pack is not always the right solution. Bonnen Battery summarizes this point as &#8220;Bigger is not automatically better.&#8221; The practical meaning for buyers is simple: if the pack becomes too large, too heavy, too slow to charge, or too hard to ship, the project may become worse even though the Ah number looks better.<\/p>\n\n  <h2 id=\"bms\">5. BMS, Protection, Balancing, and Charger Match<\/h2>\n  <p>A BMS is not a generic accessory. It must match the pack series count, chemistry, discharge current, charge current, temperature range, and charger. Many low-quality RFQs say &#8220;with BMS&#8221; but do not say whether the device has motor startup current, low-temperature use, outdoor exposure, or a removable pack.<\/p>\n\n  <p>For rechargeable lithium battery packs, the BMS or protection circuit is commonly discussed around overcharge, over-discharge, overcurrent, short-circuit, and temperature protection. Multi-cell packs may also need cell balancing depending on design. Victron&#8217;s system design guidance, for example, treats BMS selection as part of the battery system rather than an afterthought.<\/p>\n\n  <div class=\"kbt-mini-grid\">\n    <div class=\"kbt-mini-card\">\n      <strong>BMS rating is not only current<\/strong>\n      <p>A 10A BMS, 20A BMS, or 40A BMS must be checked against continuous load, peak load, heat, wire, connector, and charger behavior.<\/p>\n    <\/div>\n    <div class=\"kbt-mini-card\">\n      <strong>Charger match prevents sample failure<\/strong>\n      <p>Confirm charge voltage, charge current, connector polarity, and whether the charger is for Li-ion, LiPo, LiFePO4, or another chemistry.<\/p>\n    <\/div>\n  <\/div>\n\n  <p>If your project needs a <a href=\"https:\/\/www.kbtbattery.com\/contact\/\">custom lithium battery pack with BMS<\/a>, include the load profile in your inquiry. &#8220;The product starts a motor for 2 seconds at 12A and then runs at 3A&#8221; is much more useful than &#8220;high power battery needed.&#8221;<\/p>\n\n  <h2 id=\"mechanical\">6. Cable, Connector, Terminal Wire, Battery Tip, and Enclosure Details<\/h2>\n  <p>This is one of the best content gaps for KBT Battery. Many articles cover chemistry and BMS, but fewer cover the small details that decide whether a battery sample can be plugged into the buyer&#8217;s device.<\/p>\n\n  <p>KBT product materials mention customizable terminal wire, cable, connector, packing way, and battery tip. Product pages also show connector-related examples such as DC5521, EC5 plug, T-plug, XT-60 plug, and same-end positive and negative pole designs. These details create real long-tail SEO opportunities because buyers often search by the part they are stuck on.<\/p>\n\n  <p>For cable details, the buyer should provide wire length, wire gauge if known, color, outlet direction, and any strain relief requirement. This naturally supports long-tail searches such as <strong>custom lithium battery pack with cable<\/strong> and <strong>rechargeable battery pack with terminal wire<\/strong>.<\/p>\n\n  <p>For connectors, a photo is often more useful than a name. If the buyer can provide connector type, pin spacing, polarity, mating connector photo, and locking requirement, the sample process becomes much faster. This is where phrases such as <strong>lithium battery pack with DC5521 connector<\/strong> and <strong>JST connector LiPo battery pack<\/strong> fit naturally.<\/p>\n\n  <p>For high-current or RC applications, connector details can be part of the performance requirement. EC5, XT-60, and T-plug searches are not just accessory searches; they often reveal that the buyer is dealing with higher current, RC models, or field-replaceable packs.<\/p>\n\n  <p>Terminal position is another underused keyword area. A buyer may need same-end positive and negative poles, opposite-end terminals, side outlet wiring, top outlet wiring, or a custom battery tip. These are small mechanical details, but they decide whether the pack can be installed without redesigning the product shell.<\/p>\n\n  <h2 id=\"documents\">7. Certification and Shipping Documents: UN38.3, MSDS, UL, CE<\/h2>\n  <p>For global B2B projects, documents affect whether a sample can ship, whether a forwarder accepts the goods, and whether a buyer&#8217;s compliance team can approve the supplier. You said KBT has UN38.3, MSDS, UL, and CE. The article should present this clearly but carefully: documents must be checked against the exact cell, pack, charger, shipment mode, and market.<\/p>\n\n  <div class=\"kbt-quote\">\n    <p>Intertek describes UN38.3 T1 as a test that &#8220;Simulates low pressure.&#8221; TUV SUD describes external short circuit testing as simulating a short at the battery terminals.<\/p>\n    <p class=\"kbt-source-note\">Short citations from Intertek and TUV SUD are used here to avoid overstating what UN38.3 covers.<\/p>\n  <\/div>\n\n  <p><strong>UN38.3<\/strong> is a transport test requirement for lithium cells and batteries. Public testing summaries describe eight test areas: altitude, thermal, vibration, shock, external short circuit, impact or crush, overcharge, and forced discharge. The buyer should ask whether the proposed cell or pack has a UN38.3 test summary for the shipment plan.<\/p>\n\n  <p><strong>MSDS or SDS<\/strong> is commonly requested by forwarders, importers, and compliance teams as a safety data document. It should be tied to the exact battery model or cell used, not treated as a generic file for every possible custom pack.<\/p>\n\n  <p><strong>UL<\/strong> needs careful wording because safety standards may apply to cells, packs, chargers, or finished products depending on scope. A buyer should ask which UL document is available and whether it applies to the cell, the pack, the charger, or another component.<\/p>\n\n  <p><strong>CE<\/strong> relates to conformity with applicable EU requirements. For EU sales, buyers should ask what CE documents are available for the battery pack, charger, or finished battery system, and remember that the host product may have obligations beyond the battery pack itself.<\/p>\n\n  <p>For export projects, write your inquiry like this: &#8220;We need a custom lithium battery pack for global B2B sales. Please confirm available UN38.3, MSDS\/SDS, UL, and CE documents for the proposed model, and tell us whether the document applies to the cell, pack, charger, or finished battery product.&#8221;<\/p>\n\n  <h2 id=\"rfq\">8. RFQ Checklist Before You Ask for a Quote<\/h2>\n  <p>Before you <a href=\"https:\/\/www.kbtbattery.com\/contact\/\">contact KBT Battery for a custom battery quote<\/a>, prepare the information below. If you do not know every item, send what you have. A factory can help narrow the options faster when the application is clear.<\/p>\n\n  <ul class=\"kbt-checklist\">\n    <li>Application device and use environment<\/li>\n    <li>Nominal voltage and acceptable voltage range<\/li>\n    <li>Target capacity or target runtime<\/li>\n    <li>Continuous discharge current<\/li>\n    <li>Peak current and pulse duration<\/li>\n    <li>Charge voltage and charge current<\/li>\n    <li>Preferred cell type: Li-ion, LiPo, LiFePO4, 18650, 21700, 26650<\/li>\n    <li>Maximum battery size: length, width, height<\/li>\n    <li>Wire length, outlet direction, and connector type<\/li>\n    <li>Connector photo, polarity, and mating connector if available<\/li>\n    <li>Waterproof, vibration, or outdoor requirements<\/li>\n    <li>Certification documents needed: UN38.3, MSDS\/SDS, UL, CE<\/li>\n    <li>Sample quantity, trial order quantity, and expected production quantity<\/li>\n    <li>Label, packaging, and OEM branding requirements<\/li>\n  <\/ul>\n\n  <h2>Conclusion: The Best Battery Pack Is the One That Fits the Application<\/h2>\n  <p>A useful custom lithium battery pack specification connects electrical, mechanical, safety, logistics, and commercial details. Voltage and capacity start the conversation, but the project is decided by current, charger match, BMS, cable, connector, enclosure space, certification documents, and sample plan.<\/p>\n\n  <p>For KBT Battery&#8217;s early SEO, the strongest opportunity is not only the broad phrase &#8220;lithium battery pack.&#8221; The better opportunity is a cluster of buyer-ready long-tail searches: <strong>custom lithium battery pack manufacturer<\/strong>, <strong>small batch OEM lithium battery pack<\/strong>, <strong>lithium battery pack with BMS and charger<\/strong>, <strong>custom lithium battery pack with cable and connector<\/strong>, <strong>same-end positive negative battery pack<\/strong>, <strong>outdoor waterproof lithium battery pack<\/strong>, and <strong>UN38.3 MSDS UL CE lithium battery supplier<\/strong>. These are the phrases a serious buyer searches when they are close to sending a drawing, sample photo, or RFQ.<\/p>\n\n  <h2>References Used<\/h2>\n  <ul>\n    <li><a href=\"https:\/\/www.intertek.com\/batteries\/un-38-3-testing\/\">Intertek &#8211; UN 38.3 Testing for Lithium Batteries<\/a><\/li>\n    <li><a href=\"https:\/\/www.tuvsud.com\/en-us\/industries\/mobility-and-automotive\/automotive-and-oem\/automotive-testing-solutions\/battery-testing\/un-dot-38-3\">TUV SUD &#8211; UN\/DOT 38.3 Transportation Testing<\/a><\/li>\n    <li><a href=\"https:\/\/www.chemtrec.com\/resources\/blog\/understanding-lithium-battery-test-requirements\">CHEMTREC &#8211; Lithium Battery Test Requirements<\/a><\/li>\n    <li><a href=\"https:\/\/www.victronenergy.com\/media\/pg\/Lithium_Battery_Smart\/en\/system-design-and-bms-selection-guide.html\">Victron Energy &#8211; System Design and BMS Selection Guide<\/a><\/li>\n    <li><a href=\"https:\/\/www.bonnenbatteries.com\/custom-lithium-battery-pack-design-and-development\/\">Bonnen Battery &#8211; Custom Lithium Battery Pack Design Guide<\/a><\/li>\n  <\/ul>\n\n\n  \n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>KBT Battery Technical Blog Draft Custom Lithium Battery Pack Design Guide for OEM Projects: Voltage, Capacity, BMS, Connector and Certification A buyer-focused guide for engineers and sourcing teams who need a real battery pack specification before asking for price, samples, tooling, or shipping documents. English article: about 2,400 words Reading time: 10 minutes Custom lithium [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"themepark_post_bcolor":"#f5f5f5","themepark_post_width":"1022px","themepark_post_img":"","themepark_post_img_po":"left","themepark_post_img_re":false,"themepark_post_img_cover":false,"themepark_post_img_fixed":false,"themepark_post_hide_title":false,"themepark_post_main_b":"","themepark_post_main_p":100,"themepark_paddingblock":false,"_geo_short_summary":"","_geo_structured_desc":"","_geo_faqs":"","_geo_key_points":"","_geo_target_audience":"","_geo_content_type":"","_geo_last_modified":"","_geo_version":0,"themepark_seo_title":"Custom Lithium Battery Pack Design Guide | KBT Battery","themepark_seo_description":"Learn how to specify a custom lithium battery pack for OEM projects, including voltage, capacity, BMS, connectors, cell type, UN38.3, MSDS, UL and CE.","footnotes":""},"categories":[19],"tags":[54,53,55,50,51,52,56,57],"class_list":["post-1282","post","type-post","status-publish","format-standard","hentry","category-blogs","tag-18650-21700-lipo","tag-battery-pack-with-bms","tag-cable-and-connector","tag-custom-lithium-battery-pack","tag-oem-battery-pack","tag-small-batch-battery-pack","tag-terminal-wire","tag-un38-3-msds-ul-ce"],"metadata":{"_edit_lock":["1783589412:1"],"_edit_last":["1"],"catce":["sidebar-widgets4"],"_wp_old_slug":["custom-lithium-battery-pack-design-guide-for-oem-projects-voltage-capacity-bms-connector-and-certification"],"themepark_seo_title":["Custom Lithium Battery Pack Design Guide | KBT Battery"],"themepark_seo_description":["Learn how to specify a custom lithium battery pack for OEM projects, including voltage, capacity, BMS, connectors, cell type, UN38.3, MSDS, UL and CE."],"themepark_seo_keyword":[""]},"medium_url":false,"thumbnail_url":false,"full_url":false,"_links":{"self":[{"href":"https:\/\/www.kbtbattery.com\/zh\/wp-json\/wp\/v2\/posts\/1282","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kbtbattery.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.kbtbattery.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.kbtbattery.com\/zh\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kbtbattery.com\/zh\/wp-json\/wp\/v2\/comments?post=1282"}],"version-history":[{"count":5,"href":"https:\/\/www.kbtbattery.com\/zh\/wp-json\/wp\/v2\/posts\/1282\/revisions"}],"predecessor-version":[{"id":1288,"href":"https:\/\/www.kbtbattery.com\/zh\/wp-json\/wp\/v2\/posts\/1282\/revisions\/1288"}],"wp:attachment":[{"href":"https:\/\/www.kbtbattery.com\/zh\/wp-json\/wp\/v2\/media?parent=1282"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kbtbattery.com\/zh\/wp-json\/wp\/v2\/categories?post=1282"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kbtbattery.com\/zh\/wp-json\/wp\/v2\/tags?post=1282"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}