Custom Lithium Polymer Battery Manufacturer: OEM/ODM Solutions for IoT & Medical Devices
Published by A&S Power | Battery Technology
Introduction
Are you searching for a reliable custom lithium polymer battery manufacturer for your next IoT sensor, wearable device, or medical product? At A&S Power, we specialize in designing and manufacturing high-quality lithium polymer (Li-Po) cells and battery packs tailored to your exact specifications.
With over a decade of experience in OEM/ODM projects, we help product developers and procurement professionals bring their battery-powered innovations to market – faster, safer, and more cost-effectively.
A&S Power is the parent company of Enerbe, our LiFePO4 energy storage brand serving commercial, industrial, and lead-acid replacement applications. For dedicated pack assembly solutions, see also: Custom LiPo Battery Packs: OEM Assembly with Built-in BMS.
What is a Lithium Polymer Battery?
A lithium polymer battery (often abbreviated as Li-Po or Li-poly) is a rechargeable battery that uses a gel-like polymer electrolyte instead of the liquid electrolyte found in traditional cylindrical lithium-ion cells.
This solid-state design enables ultra-thin, lightweight, and flexible form factors – making it the ideal power source for compact consumer electronics, medical wearables, and IoT devices where space is at a premium.
Unlike rigid 18650 or prismatic cells, lithium ion polymer batteries can be manufactured in almost any shape or size, giving product designers the freedom to optimize space and battery capacity without compromising on device aesthetics or ergonomics.
Customization Options for OEM Buyers
Every product has unique power requirements. As a custom lithium polymer battery manufacturer, we provide fully tailored solutions to match your technical, mechanical, and commercial needs.
| Customization Area | Available Options |
|---|---|
| Capacity | From 20mAh to 10,000mAh+ |
| Nominal Voltage | 3.7V, 7.4V, 11.1V, 14.8V, or fully custom |
| Dimensions | Thickness as low as 3.0mm; any length and width |
| Shape | Rectangular, curved, stepped, or ultra-thin profile |
| Terminals | Wire leads, JST/PHR connectors, solder pads |
| BMS / Protection | Overcharge, over-discharge, short-circuit, temperature protection |
| BMS Communication | I²C, SMBus, CAN bus, fuel gauge (SoC) |
| Labeling & Packaging | Custom branding, color, retail-ready packaging |
| Certifications | UL, CE, RoHS, UN38.3, IEC62133 |
Whether you need a standard 3.7V 120mAh pouch cell for a smart ring or a complex multi-cell pack for a portable medical monitor, our engineering team works with you from concept to production to deliver the perfect custom lithium polymer battery solution.
Applications – Where Our Batteries Power Innovation
We serve OEM buyers across multiple industries. Our custom lithium polymer battery packs have been deployed in the following fields:
| Industry | Key Applications |
|---|---|
| Wearable Devices | Smartwatches, fitness trackers, smart glasses, smart rings; medical wearables (CGM, ECG patches); safety wearables |
| IoT Sensors | Environmental monitors, smart home sensors, asset trackers, GPS locators, agricultural and industrial IoT |
| Medical Equipment | Portable diagnostic devices, drug delivery systems (insulin pumps, inhalers), patient monitoring systems, point-of-care testing |
| Consumer Electronics | TWS earbuds, Bluetooth speakers, wireless keyboards & mice, stylus pens, portable chargers |
| Other Industrial Uses | Drones and robotics, automotive key fobs & TPMS, smart locks, access control systems |
No matter the application, we engineer our lithium ion polymer batteries for safety, reliability, and long cycle life – exactly what OEM buyers demand.
Certifications & Compliance – Your Assurance of Quality
As a professional lithium polymer battery manufacturer, we prioritize safety and regulatory compliance. Every battery we produce meets or exceeds international standards.
| Certification | What It Means for Your OEM Project |
|---|---|
| UL 1642 / 2054 | Safety tested for electrical, mechanical, and fire hazards – essential for North American market access |
| CE | Compliant with EU safety, health, and environmental requirements – mandatory for European sales |
| RoHS | Free from restricted hazardous substances – required for global distribution |
| UN38.3 | Certified for safe air and sea transport – without it, freight forwarders will reject your shipment |
| IEC62133 | International safety standard for portable rechargeable cells and packs |
| ISO9001 / ISO14001 | Quality management and environmental systems – proven production consistency and sustainability |
We provide full documentation with every order, including test reports, certificates, and material declarations. This saves you time and reduces your compliance burden.
Why Choose A&S Power as Your Li-Po Battery Manufacturer?
There are many battery suppliers out there. Here is what sets A&S Power apart as a trusted OEM partner:
| Advantage | Details for OEM Buyers |
|---|---|
| True Customization | We don’t just offer off-the-shelf cells. We design and manufacture batteries to your unique size, shape, performance, and connector requirements. |
| Direct Factory Pricing | As a factory-direct manufacturer, we offer competitive pricing without sacrificing quality – no middlemen, no unnecessary markups. |
| Technical Engineering Support | Our in-house engineers provide design reviews, thermal modeling, and BMS customization to ensure your battery integrates seamlessly into your product. |
| Rigorous Quality Control | 100% final functional testing and visual inspection on every battery. Batch-level traceability for full accountability. |
| Reliable Supply Chain | With stable raw material sourcing and scalable production capacity, we support both prototyping and high-volume mass production. |
| Responsive Communication | From initial inquiry to post-delivery support, our team responds quickly and clearly. We speak your language – engineering, procurement, and logistics. |
For a deeper dive into supplier selection criteria, see our guide: How to Choose the Right Lithium Polymer Battery Manufacturer for Your OEM Project.
Frequently Asked Questions
1. What is the minimum order quantity (MOQ) for custom lithium polymer batteries?
Our MOQ depends on the cell size and project complexity. For standard pouch cells, MOQ starts at 1,000–3,000 units. For fully custom packs with BMS, we can work with lower quantities for prototyping.
2. How long does a custom battery project take?
From specification to first samples, typical lead time is 2–4 weeks. Mass production takes 4–6 weeks after sample approval.
3. Do you provide UL, CE, RoHS, and UN38.3 certifications?
Yes. We can supply all required certificates with your order. For fully customized cell designs, we assist with the full testing and certification process.
4. Can you include custom connectors, wires, or labels?
Absolutely. We support any termination type (JST, Molex, custom wiring harnesses) and offer OEM labeling with your brand logo and product information.
5. What is the typical cycle life of your lithium polymer batteries?
Under standard conditions (0.5C charge/discharge, 25°C), our cells deliver 300–500 cycles to 80% capacity. With optimized design, we can extend this to 700+ cycles.
6. Do you ship globally?
Yes. We ship by air (UN38.3 certified) and sea freight to customers worldwide, including North America, Europe, Asia, and Australia.
Get a Quote for Your Custom Li-Polymer Battery Project
At A&S Power, we are more than a custom lithium polymer battery manufacturer – we are your long-term power partner. Whether you are a startup developing a new wearable device or an established OEM upgrading a medical product, we have the expertise and capacity to deliver.
- ✅ Fully custom dimensions, capacities and voltages
- ✅ In-house BMS design and integration
- ✅ UL 1642 tested, CE, RoHS, UN38.3 certified
- ✅ OEM branding and custom packaging
- ✅ Engineering support from concept to mass production