Round Lipo Battery Production
Round lipo battery manufacturing requires strict quality control in the cathode and anode circular winding, uniform coating, and accurate size cutting to produce accurate batteries as designed. Furthermore, high professionalism is required to control the exact circular size of the round lipo battery, especially a small round lipo battery. Although the round lipo battery is not common in the market,but the round lipo battery manufacturing is already under large-scale production with safety and reliability guaranteed.
Custom Round Lipo Battery Manufacturer In China
In contrast with most rectangular-shaped pouch lipo batteries, the round lipo battery is custom-designed in a circular shape, formulated by the soft aluminum film package and polymer-based electrolyte.
3.7v lipo round battery can be fully customized in different round shapes with 10-50mm diameter and 3mm-10mm thickness to satisfy different round sizes and power
demand for smart rings, smart wearables, medical sensors, bluetooth earbuds, small IOT devices, electronic badges, and miniature toys. Furthermore, round lipo battery cells are flexible, lightweight, and thin, which is ideal for specific round space installation and pushing different devices’ innovative design.
Production Process Flow Chart
Key Features of round lipo battery

VTCBATT adopts high automation for the round lipo battery manufacturing to ensure high precision and safety of the battery’s size and performance.Furthermore,we use special jig to fix the cell internal structure stablely in accurate size.VTCBATT has strong R&D capability to customize any round lipo batteries exactly as per your detalled requirement.

With 20 years of experience in lipo battery manufacturing, VTCBATT can design any round lipo battery size as the customer’s demand. Full customization of the round lipo battery pushes the devices’ design innovation and multiple functions realization.

Featuring a high energy density of 200wh/kg-250wh/kg, the round lipo battery can ensure high power for most devices, compared with normal non-rechargeable coin round batteries.
Furthermore, the rechargeable capability of the round lipo battery brings convenience in battery replacement and saves cost in the long term.

Compared to normal non-rechargeable coin round lithium batteries, the round lipo batteries are much lighter due to using the soft aluminum film. Furthermore, the soft aluminum film can maximize the energy output and optimize the space in a constrained size.
Application for Round Lipo Batteries
Smart Wearable DevicesThe round lipo batteries can be fully customized to fit in the round space of the smartwatches, smart belt, smart rings, and fitness devices, bringing great comfort and convenience for daily wear.
Medical DevicesThe hearing aid is round and fits in the ear, which requires a tiny round lithium battery to power the hearing aid every day. The round lipo battery can be precisely designed for the size of the hearing aid, and offers great convenience without frequent replacement.
LightingSome lights for decorative purposes are specially designed in a circular shape, where only the round lithium batteries can fit in and ensure a continuous power supply without frequent replacement.
A: Due to space constraints, round lipo batteries are commonly placed exactly in circular shapes, such as smartwatches, fitness trackers, key fobs,digital thermometers, compact diagnostic tools, IOT sensors, and backup power.
A: First, you need to find the right size, voltage, capacity, chemistry, and model number of the original lipo battery you want to replace. Normally, there are clear marks on the label of these specific information.
Second, you need to match the round lipo battery, which has the same value and specifications. If all is the same, then you can replace it directly.
A: Yes, round lithium polymer batteries are safe. Like the normal prismatic lipo battery, the round lipo battery also conducts serious and strict tests of overcharge, over-discharge, overcurrent, short-circuit, and temperature cycling to ensure ultimate safety and reliability.
Safety Tips for round lipo battery:
1. Use a specific battery charger with a matched charge voltage.
Note that some round lipo batteries can be designed to 3.8V or 3.9V higher voltage, which requires a 4.5V charge voltage. A normal 3.7V round lipo battery requires the standard 4.2V charge voltage.
2. Don’t bend, puncture, or disassemble the round lipo battery.
3. Keep the round lipo battery above 3.7V before storing them, and charge per 6 months for long-term storage.
4. Make sure to use the round lipo battery with a built-in protection circuit to avoid overcharge,overdischarge, over current.
5. Stop using the round lipo battery, which is swollen, leaking, or hot.
A: 1. Materials difference
Round lipo battery is a kind of rechargeable lithium battery, formulated by a polymer electrode and soft aluminum film.
Standard coin cell battery is a non-rechargeable LiMn2O2 battery, formulated by metal case and manganese dioxide.
2. Size difference
Round lipo battery can be fully customized in different shapes and circular sizes.
Standard coin cell has a standard cell model and can’t be customized.
3. Energy density difference
Round lipo battery has much higher energy density than a normal coin cell size battery.
4. Voltage difference
Round lipo battery can reach 3.7V,3.8V nominal voltage, while a standard coin cell battery only has 3.0V nominal voltage.
5. Discharge profile difference
Round lipo battery has a steady discharge curve from 4.2V to 3.0V, while coin cell lithium battery has a very flat discharge curve till the death voltage 3V.
A: Yes.You can buy from the direct round lipo battery manufacturers,such as VTCBATT.Or some retail shop supply,such as Amazon,Didi-Key,RS Components.
A: The round lipo battery can last 500-1000 cycle lifespan of charge cycles.
A: No. It’s dangerous to recharge a non-rechargeable round battery with a LiPo charger.
A: LIR means lithium ion,Ion rechargeable,which is the battery raw materials.
The number 2032 means the physical size of the battery in millimeters.
A: First, you need to fully discharge the round lipo battery till no power. Package the battery separately without contact with metal, keys.
Second, find the battery recycling trash near,which is common in supply chain stores of Walmart, HomeDepot,Best Buy.You can throw away the battery to the bin directly without any charge.
Third,find the third party recycling and waste company,who can deal with the wasted battery in large q’ty under charge.






