LithoTop designs and manufactures custom LiPo batteries and lithium polymer battery packs for wearables, medical devices, IoT products, smart electronics, robotics, drones and industrial equipment.
Customize battery size, shape, voltage, capacity, discharge rate, PCM, NTC, wires and connectors around your device.
✅ 500+ Cycles (80% DOD) | Premium LCO cells for multi-year power.
✅ Delta V < 5mV | Stops power failure under heavy loads.
✅ UN38.3 Certified Packaging | Fast customs clearance and full compliance.
Custom lithium polymer batteries. Choose from standard pouch cells or specialized LiPo battery structures for thin, curved, round, high-voltage, high-rate and extreme-temperature applications. Access 360+ certified models and free samples for your mission-critical project.
High discharge C-rates providing consistent burst current for high-performance UAV and robotics.
Precision profiles down to 0.5mm. Ideal for slim medical and wearable designs.
Advanced 3.8V/3.85V formulas maximizing energy density for extended hardware runtimes.
Custom curved, C, or U-shape designs to maximize internal space efficiency.
Circular lithium polymer batteries designed for smart watches and round electronic enclosures.
Reliable military-grade performance in extreme industrial environments down to -40°C.
80°C Heat-resistant electrolytes for safe operation in industrial, automotive environments.
Reliable 3.7V rechargeable lithium polymer batteries in a wide range of standard sizes and capacities.
A custom LiPo battery is more than a pouch cell. LithoTop can engineer the electrical, mechanical and interface design around your complete product. Look at our real builds to see how we protect projects.
LithoTop supplies LiPo batteries with connectors for direct device integration. JST, Molex, Hirose and other interfaces can be selected according to your PCB, charger or product connector. Wire length, AWG size, polarity, cable direction and NTC wiring can also be customized.
We define the limits of lithium polymer technology. Our manufacturing covers every physical dimension and electrical requirement for mission critical hardware.
| Battery Category | Physical Limits | Electrical Performance | Expert Tips for Engineers |
|---|---|---|---|
| Ultra Thin and Micro | Thickness 0.4mm to 1.5mm | 10mAh to 500mAh | These cells are very sensitive to heat. Standard hand soldering will damage the internal separator. I mandate laser welding for all micro tabs. |
| High Rate Propulsion | Max Width 150mm | Up to 150C Burst | Standard copper tabs will melt under 100C loads. We use thickened pure nickel tabs to prevent fire risks during high speed flight. |
| High Voltage Systems | 3.8V and 3.85V Nominal | 4.35V to 4.4V Cut-off | You gain 15 percent more energy density with high voltage. But you must calibrate your BMS cut-off precisely. Even 0.05V error kills cycle life. |
| Extreme Cold Series | Operating down to -40C | 70 percent Capacity at -20C | Standard batteries freeze and snap internally in winter. Our special electrolytes prevent crystal growth to keep your outdoor sensors alive. |
| High Capacity Packs | Multi-cell Parallel Sets | Up to 20,000mAh plus | Consistency is everything in large packs. I mandate matching cells with less than 2mΩ resistance difference to stop the "weak link" failure. |
High-accuracy Japanese Seiko PCBs provide superior voltage monitoring and swelling prevention over standard protection boards.
Expert Tips: For high-rate UAVs, we offer board-free designs to maximize discharge current via refined cell chemistry.
ISO 9001 and ISO 14001 certified facility. We offer shipping expertise and custom UN38.3/MSDS certification support.
Expert Tips: Many models ship safely without certificates. Our Fee Rebate program refunds testing costs against bulk orders.
Functional battery samples in 7-14 days. Supporting custom tooling for special shapes with full technical data provided.
Expert Tips: I provide early "Rough Fit" samples to verify physical dimensions and thermal performance before mass production.
| Custom Item | Available Options | Engineering Consideration |
|---|---|---|
| Nominal Voltage | 3.7V / 3.8V / 3.85V / Multi-cell | Match charger and device input |
| Capacity | Custom according to dimensions | Capacity depends on usable volume |
| Thickness | Ultra-thin to standard pouch structures | Mechanical tolerance required |
| Shape | Rectangular / Round / Curved / Special | Drawing review required |
| Discharge Rate | Standard / High-rate | Match continuous and peak current |
| PCM | OVP / UVP / OCP / SCP | Protection thresholds customized |
| NTC | Optional | Temperature monitoring |
| Connector | JST / Molex / Custom | Pinout and polarity confirmed |
| Wire | Custom AWG and length | Match current and voltage drop |
| Packaging | Bare cell / PVC / enclosure | Depends on device installation |
| Certification | UN38.3 / IEC 62133 / CE / RoHS / MSDS | Depends on target market and application |
Provide the following engineering information and LithoTop can evaluate a suitable custom lithium polymer battery for your product.
Provide maximum finished dimensions: Thickness × Width × Length.
Determine whether the device requires 3.7V, 3.8V, 3.85V or a multi-cell battery pack.
Capacity depends on average current, and required operating time.
Provide continuous current, peak current and pulse duration for correct cell selection.
Confirm protection requirements, connector type, wire gauge, length and polarity.
Define operating temperature, humidity, vibration and application conditions.
Engineered for high stakes missions where a single field failure is not an option.
Balanced for high volume growth to protect your profit and your delivery schedule.
The correct LiPo chemistry must be matched with the charging voltage, device electronics and required energy density.
| Feature | Stacked LiPo Battery | Wound LiPo Battery |
|---|---|---|
| Internal Structure | Layered electrode stack | Wound electrode structure |
| Shape Flexibility | Excellent | More standardized |
| Internal Resistance | Can be optimized for high output | Suitable for standard applications |
| Typical Applications | High-rate / thin / special designs | Consumer electronics |
| Cost | Typically higher | More cost-effective |
| Customization | High | High-volume friendly |
| LiPo Type | Nominal Voltage | Typical Charge Voltage | Best For |
|---|---|---|---|
| Standard LiPo | 3.7V | 4.2V | General electronics |
| High Voltage LiPo | 3.8V | 4.35V | Compact high-energy devices |
| High Voltage LiPo | 3.85V | Up to 4.4V depending on cell | Wearables / high-energy applications |
Every custom lithium polymer battery project is evaluated according to its electrical, mechanical and application requirements before mass production.
We do not buy reviews. We build trust through real hardware success. Here is how our engineering standards saved projects from total failure in the field.
Have a Question?
Get clear technical answers to stop production risks and protect your project.
A custom LiPo battery is a lithium polymer pouch battery designed around the electrical and mechanical requirements of a specific device. Size, shape, capacity, voltage, discharge rate, PCM, NTC, wires, connectors and packaging can all be customized.
Yes. LithoTop can customize thickness, width and length according to the available battery compartment. Final dimensions should also consider PCM, tabs, wires, connectors and insulation.
Specialized ultra-thin LiPo batteries can be developed from approximately 0.4mm depending on battery size, capacity and structure. The practical minimum thickness must be evaluated from the complete device requirements and manufacturing tolerances.
LiPo batteries normally use a flexible pouch structure, making them suitable for thin, lightweight and customized shapes. Cylindrical lithium-ion cells such as 14500, 18650 and 21700 use rigid metal housings and are commonly selected for modular battery packs.
Yes. LithoTop supports rectangular, round, curved, C-shape, U-shape and other special-shape LiPo batteries. Engineering feasibility is reviewed according to your product drawing and available internal space.
Yes. Round and curved LiPo batteries can be developed for smart rings, smart watches, wearable sensors, medical devices and other products with non-rectangular battery compartments.
A standard LiPo battery typically has a 3.7V nominal voltage and 4.2V charge voltage. A 3.85V high-voltage LiPo cell may support a higher charge voltage, commonly up to 4.4V depending on the cell design. The charger must match the selected cell.
Yes. A custom PCM can provide overcharge, over-discharge, over-current and short-circuit protection. Protection thresholds can be selected according to the cell and application. NTC temperature monitoring can also be added when required.
Yes. LithoTop supports JST, Molex and other customized connectors. Wire length, AWG size, polarity, pin definition and cable direction can be customized according to your device.
Capacity should be selected according to available battery volume, required runtime, average current, peak current, operating temperature and charging strategy. Higher capacity is not always possible within the same dimensions.
Please provide maximum battery dimensions, nominal voltage, required capacity, continuous current, peak current, charging method, connector, wire length, operating temperature, estimated quantity and target certification market.
MOQ depends on the cell structure, dimensions, tooling, protection circuit, connector and customization level. Prototype quantities can normally be evaluated separately before pilot and mass production.
Typical sample development is approximately 7–10 working days after specifications are confirmed. Lead time may vary depending on custom cell dimensions, tooling, PCM development, connectors, special structures and validation requirements.
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Response within 12 hours. Save up to 30% on bulk orders.
🔒 100% Privacy. No Hidden Costs. Free Sample Options.
