Custom lithium battery packs for device makers · Made in Shenzhen, shipped worldwide

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01 / 07

Medical Device Batteries

Custom lithium battery packs for portable medical devices.

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Not sure where your product fits? An engineer replies within 24 hours.All industries Send your spec
Custom solutionsFrom your spec to a tested batchCells, BMS, case, charger and label, built around your device.See how we work
Development ProcessFive stages from your brief to batch deliveryBMS DesignProtection, balancing and data to your deviceCell Selection & SourcingLi-ion, LiFePO4 or LiPo from leading brandsPrototyping & SamplesCharged samples you test before the batchOEM / ODMYour spec or our design, under your brandCost & MOQWhat drives price and minimum order
01 / 05

Replacement Battery Packs

Custom lithium replacement packs for lead-acid batteries and light EVs.

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About UsWho we are and how we workQuality & CertificationDocuments, tests and quality control
Made in ShenzhenSee our production and test linesFactory tour
Blog

Lithium Battery Guides and Insights

Practical guides on lithium battery chemistry, voltage, sizing, BMS and safety.

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122articles

Latest articles

4 min read

Medical Device Battery Pack Design: Standards & Checklist

How to specify a medical device battery pack: IEC 60601-1, IEC 62133-2, UL 2054, ISO 13485, fuel gauging and a supplier qualification...

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4 min read

Best 21700 Cells: Panasonic vs Samsung vs Molicel vs EVE

How to choose the best 21700 cell for a custom battery pack. Panasonic, Samsung SDI, Molicel and EVE compared on power, energy,...

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4 min read

How to Ship Lithium Batteries Internationally (2026 Rules)

How to ship lithium batteries by air and sea in 2026: UN3480/3481, PI 965–967, the new 30% state-of-charge rule, UN38.3 test summary...

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4 min read

Battery Certification Guide: UL 2054 vs IEC 62133 vs UL 2271

Which lithium battery certification do you need? Compare UN38.3, IEC 62133-2, UL 2054, UL 2271 and UL 2580 by product type and...

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4 min read

Custom Battery Pack Cost: MOQ, Tooling & Price Drivers

What drives custom battery pack cost: cells, BMS, tooling, certification and volume. With 2025 BNEF price benchmarks and MOQ tips for buyers.

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5 min read

Custom Lithium Battery Pack Development: 7 Stages Explained

Custom lithium battery pack development in 7 stages: RFQ, cell selection, BMS, enclosure, prototyping, certification and mass production.

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5 min read

Battery Capacity Degradation: Causes & How to Extend Life

Learn why battery capacity degrades, including heat, cycle aging, calendar aging, overcharge, deep discharge, C-rate stress, and ways to extend battery life.

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5 min read

Lithium vs Solid-State Battery: Today vs Tomorrow

Compare lithium-ion and solid-state batteries by energy density, safety, cost, charging speed, manufacturing readiness, and future applications.

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5 min read

Battery Recycling: Lead-Acid & Lithium Recycling Guide

Compare lead-acid and lithium battery recycling, including materials recovery, safety handling, collection, regulations, and sustainable battery lifecycle planning.

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5 min read

Battery Testing Guide: Capacity, Internal Resistance & EIS

Learn battery testing methods including capacity testing, internal resistance, EIS, load testing, cycle testing, and quality checks for battery packs.

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5 min read

Battery Charging Guide: CC/CV, Absorption, Float & Equalization

Understand battery charging stages including CC/CV, bulk, absorption, float, equalization, lithium charging, lead-acid charging, and charger selection.

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