High-Performance 3.6V 50mAh Rechargeable Coin Li-ion Battery LPM1240
At LiPol, we continue to push the boundaries of micro-power solutions. As a leading Li-ion battery manufacturer, we are proud to highlight one of our most versatile small-form-factor cells: the LPM1240.
Compact Power for Modern Electronics
The LPM1240 is a high-quality 3.6V Li-ion Battery designed for compact electronic devices that require a reliable, rechargeable power source. This Coin Li-ion Battery is engineered with precision to ensure stable voltage and a long cycle life, making it an ideal choice for wearables, medical devices, and IoT sensors.
Technical Specifications
Model: LPM1240
Chemistry: Li-ion (Lithium-ion)
Nominal Voltage: 3.6V
Capacity: 50mAh Li-ion Battery
Diameter: 12mm
Thickness: 4mm
Why Choose the LPM1240?
This 3.6V Coin Li-ion Battery size is 12mm Diameter, 4mm Thickness, offering an incredible energy-to-size ratio. Whether you are developing a sleek smartwatch or a discreet hearing aid, this Li-ion Battery provides the punch you need without the bulk.
LiPol supply kinds of Micro Smallest Li-ion Batteries for your reference. We understand that every project has unique space constraints, and our extensive catalog of small-scale lithium-polymer and lithium-ion cells ensures we have the right fit for your application.
Partner with a Leading Li-ion Battery Manufacturer
Choosing the right power source is critical to the success of your product. When you work with LiPol, you are choosing quality, safety, and expertise.
Contact LiPol battery manufacturer, and we will get you a response within 12 hours. Our engineering team is ready to assist you with technical data sheets, samples, and customized battery solutions tailored to your specific needs.
Visit LiPol Battery Manufacturer to explore our full range of rechargeable battery solutions.
📩 Contact LiPol battery experts today! 🌐 Visit LiPol website batteries
3.6V 50mAh Rechargeable Coin Li-ion Battery LPM1240 Feature
| Nominal Voltage | 3.6V |
| Model | LPM1240, LP1240 |
| Energy | 0.18Wh |
| Capacity | 50mAh |
| Max Operating Voltage Range | 2.50V to 4.2V |
| Charge Current | 0.2C – 0.5C |
| Discharge Current | 0.5C – 1C |
| Discharge Cut Off | 2.50V |
| Discharge | 50mA |
| Expected Cycle Life | 500 cycles ≥ 80% |
| Size with PCM | Diameter 12mm, Thickness 5.5mm, |
| Original Cell Size | Diameter 12mm, Thickness 4mm, |
| Weight | 1g ±0.1g |
| Certifications | MSDS, ISO9001 |
| Cycle Life | ≥500 cycles |
| Manufacturer | LiPol Battery Co., Ltd |
| Keywords | 3.6V Li-ion Battery, LPM1240, 50mAh Li-ion Battery, Li-ion Battery, Coin Li-ion Battery, Diameter 12mm, Thickness 4mm, LiPo Battery, Lithium Polymer Battery, Li-Polymer Battery, LiPolymer Battery, LiPol Battery, LiPol Battery Manufacturer |
Coin Li-ion Batteries Application
1. Advanced Wearables & “Hearables”
This is the most dominant sector for coin Li-ion. Because these devices are worn against the body, they require ultra-compact energy that can handle daily recharge cycles.
True Wireless Stereo (TWS): Earbuds rely almost exclusively on coin-shaped Li-ion (like the CP1254 or LIR1254) due to their high energy density and round form factor that fits ergonomic ear designs.
Smart Rings: A massive trend for 2026. These require tiny, often custom-curved or ultra-small coin cells to track sleep and biometrics without being bulky.
Smartwatches: Used primarily for specialized health-only trackers that don’t need the massive screens of a full-fledged Apple Watch but require 5–7 days of battery life.
2. Medical & Healthcare Devices
The shift toward “Home Healthcare” has pushed coin Li-ion into the medical spotlight.
Continuous Glucose Monitors (CGM): Patients use these 24/7. Rechargeable versions reduce medical waste and offer consistent 3.7V power for Bluetooth syncing.
Smart Patches: Thin, skin-adhesive patches for heart rate or temperature monitoring often use a coin Li-ion cell because it can handle the “burst” power needed for data transmission.
Hearing Aids: High-end rechargeable hearing aids use these to eliminate the struggle of changing tiny disposable batteries every few days.
3. IoT & Smart Home Infrastructure
With the “Matter” protocol standardizing smart homes in 2026, the demand for small, long-term power has spiked.
Smart Tags & Trackers: Devices like upgraded AirTags or industrial asset trackers use rechargeable coin cells paired with tiny solar or kinetic energy harvesters.
Security Sensors: Door/window sensors and glass-break detectors. While many still use primary (disposable) cells, premium “maintenance-free” systems use rechargeable coin cells.
Smart Key Fobs: Modern automotive fobs with LCD screens or ultra-wideband (UWB) for “walk-up” unlocking require more current than a disposable battery can provide.
4. Industrial & Specialized Electronics
Memory Backup (RTC): Used on motherboards and industrial PLCs to maintain the real-time clock and BIOS settings during power outages.
Miniature Drones/Robotics: Micro-drones used for indoor inspection or toy “insect-bots” use the high discharge rates (up to 5C) that rechargeable coin cells can provide
Hot Selling Coin Li-ion Batteries
We have different voltage and capacity versions.
The best-selling model:
LPM0840
LPM1054
LPM1040
LPM1154
LPM1240
LPM1254
LPM1654
Diameter +0.5mm, Thickness +3mm after added with PCM
Instock Coin Li-ion Batteries
3.6V Micro Li-ion Batteries.csv
All those 3.6V micro lithium-ion batteries can be added with the protection board (to prevent issues such as overcharging and short circuits), wires (normally length of 15mm), and connector, Normally Just Without PCM, with tabs only to fit witihin the small area.| Li-ion Battery | Capacity (mAh) | Diameter (mm) | Thickness (mm) | Weight (g) | Resistance (mΩ) |
|---|---|---|---|---|---|
| LPM0840 | 18 | 8 | 4.0 | 1.0 | ≤650 |
| LPM0940 | 25 | 9 | 4.0 | 1.0 | ≤650 |
| LPM1040 | 35 | 10 | 4.0 | 1.1 | ≤650 |
| LPM1054 | 40 | 10 | 5.4 | 1.3 | ≤600 |
| LPM1140 | 40 | 11 | 4.0 | 1.3 | ≤700 |
| LPM1154 | 50 | 11 | 5.4 | 1.5 | ≤650 |
| LPM1240 | 50 | 12 | 4.0 | 1.5 | ≤550 |
| LPM1254 | 65 | 12 | 5.4 | 1.8 | ≤500 |
| LPM1454 | 90 | 14 | 5.4 | 2.5 | ≤450 |
| LPM1654 | 120 | 16 | 5.4 | 3.4 | ≤400 |
| LPM5254 | 10 | 5.2±0.1 | 5.4±0.2 | 0.4 | ≤1800 |
| LPM0654 | 13 | 5.8±0.1 | 5.4±0.2 | 0.6 | ≤1800 |
| LPM5810 | 28 | 5.8±0.1 | 10.0±0.2 | 1 | ≤850 |
| LPM5814 | 40 | 5.8±0.1 | 13.5±0.2 | 2 | ≤ 700 |
| LPM0640 | 7 | 6.0-0.2 | 4.3±0.2 | 0.5 | ≤2000 |
| LPM0654 | 13 | 6.0-0.2 | 5.4±0.2 | 0.6 | ≤1500 |
| LPM0650 | 12 | 6.0±0.1 | 5.0±0.2 | 0.4 | ≤1500 |
| LPM0740 | 16 | 7.0±0.1 | 4.3±0.2 | 0.6 | ≤1000 |
| LPM7840 | 16 | 7.8-0.2 | 4.3±0.2 | 0.8 | ≤1000 |
| LPM7854 | 22 | 7.8-0.2 | 5.4±0.2 | 1 | ≤1000 |
| LPM7810 | 62 | 7.8±0.1 | 10.0±0.2 | 1.7 | ≤550 |
| LPM7813 | 85 | 7.8±0.1 | 13.0±0.2 | 1.9 | ≤550 |
| LPM7815 | 100 | 7.8±0.1 | 15.0±0.2 | 3.2 | ≤550 |
| LPM7820 | 130 | 7.8±0.1 | 20.0±0.2 | 3.5 | ≤450 |
| LPM7822 | 140 | 7.8±0.1 | 22.0±0.2 | 3.6 | ≤400 |
| LPM7840 | 20 | 7.8±0.1 | 4.3±0.2 | 0.9 | ≤1000 |
| LPM7854 | 28 | 7.8±0.1 | 5.4±0.2 | 1 | ≤1000 |
| LPM0840 | 18 | 8.0-0.2 | 4.3±0.2 | 0.8 | ≤1000 |
| LPM0854 | 25 | 8.0-0.2 | 5.4±0.2 | 1 | ≤1000 |
| LPM0870 | 45 | 8.0±0.1 | 7.0±0.2 | 1.3 | ≤650 |
| LPM7840 | 22 | 8.0±0.1 | 4.3±0.2 | 1 | ≤1000 |
| LPM7854 | 30 | 8.0±0.1 | 5.4±0.2 | 1.1 | ≤1000 |
| LPM8558 | 42 | 8.5±0.1 | 5.8±0.2 | 1.4 | ≤650 |
| LPM0940 | 25 | 9.0-0.2 | 4.3±0.2 | 1 | ≤850 |
| LPM0940 | 30 | 9.0±0.1 | 4.3±0.2 | 1.1 | ≤850 |
| LPM0954 | 42 | 9.0±0.1 | 5.4±0.2 | 1.2 | ≤700 |
| LPM9540 | 35 | 9.5±0.1 | 4.3±0.2 | 0.9 | ≤750 |
| LPM1040 | 35 | 10.0-0.2 | 4.3±0.2 | 1.1 | ≤650 |
| LPM1045 | 40 | 10.0-0.2 | 4.5±0.2 | 1.3 | ≤650 |
| LPM1054 | 45 | 10.0-0.2 | 5.4±0.2 | 1.3 | ≤700 |
| LPM1040 | 40 | 10.0±0.1 | 4.0±0.2 | 1.2 | ≤650 |
| LPM1045 | 46 | 10.0±0.1 | 4.5±0.2 | 1.4 | ≤650 |
| LPM1054 | 55 | 10.0±0.1 | 5.4±0.2 | 1.6 | ≤600 |
| LPM1070 | 75 | 10.0±0.1 | 7.0±0.2 | 1.8 | ≤550 |
| LPM1140 | 45 | 11.0-0.2 | 4.3±0.2 | 1.3 | ≤700 |
| LPM1154 | 50 | 11.0-0.2 | 5.4±0.2 | 1.5 | ≤650 |
| LPM1110 | 138 | 11.0±0.1 | 10.0±0.2 | 2.9 | ≤350 |
| LPM1140 | 48 | 11.0±0.1 | 4.3±0.2 | 1.4 | ≤650 |
| LPM1154 | 65 | 11.0±0.1 | 5.4±0.2 | 1.8 | ≤550 |
| LPM1240 | 50 | 12.0-0.2 | 4.3±0.2 | 1.5 | ≤650 |
| LPM1254 | 65 | 12.0-0.2 | 5.4±0.2 | 1.8 | ≤600 |
| LPM1254 | 70 | 12.0-0.2 | 5.4±0.2 | 1.8 | ≤600 |
| LPM1210 | 165 | 12.0±0.1 | 10.0±0.2 | 3.4 | ≤350 |
| LPM1240 | 68 | 12.0±0.1 | 4.5±0.2 | 1.9 | ≤600 |
| LPM1240 | 60 | 12.0±0.1 | 4.3±0.2 | 1.8 | ≤600 |
| LPM1254 | 80 | 12.0±0.1 | 5.4±0.2 | 1.9 | ≤500 |
| LPM1220 | 8 | 12.5-0.2 | 2.0±0.2 | 0.7 | ≤2000 |
| LPM1454 | 85 | 14.0-0.2 | 5.4±0.2 | 2.5 | ≤500 |
| LPM1454 | 105 | 14.0±0.1 | 5.4±0.2 | 2.4 | ≤500 |
| LPM1620 | 16 | 16.0-0.2 | 2.0±0.2 | 1.1 | ≤2000 |
| LPM1632 | 25 | 16.0-0.2 | 3.2±0.2 | 2 | ≤1000 |
| LPM1654 | 110 | 16.0-0.2 | 5.4±0.2 | 3.4 | ≤500 |
| LPM1654 | 140 | 16.0±0.1 | 5.4±0.2 | 3.3 | ≤450 |
| LPM2016 | 16 | 20.0-0.2 | 1.6±0.2 | 1.5 | ≤2000 |
| LPM2025 | 25 | 20.0-0.2 | 2.5±0.2 | 2.3 | ≤1000 |
| LPM2032 | 40 | 20.0-0.2 | 3.2±0.2 | 2.7 | ≤600 |
| LPM2040 | 65 | 20.0-0.2 | 4.0±0.2 | 2.8 | ≤600 |
| LPM2050 | 80 | 20.0-0.2 | 5.0±0.2 | 3.8 | ≤500 |
| LPM2430 | 60 | 24.5-0.2 | 3.0±0.2 | 4.5 | ≤400 |
| LPM2440 | 110 | 24.5-0.2 | 4.0±0.2 | 5 | ≤300 |
| LPM2450 | 120 | 24.5-0.2 | 5.0±0.2 | 5.6 | ≤250 |
| LPM2466 | 180 | 24.5-0.2 | 6.6±0.2 | 7.5 | ≤300 |
| LPM2477 | 200 | 24.5-0.2 | 7.7±0.2 | 8.5 | ≤400 |
| LPM3032 | 110 | 30.0-0.2 | 3.2±0.2 | 6.2 | ≤400 |
| LPM3048 | 240 | 30.0-0.2 | 4.8±0.2 | 7.3 | ≤400 |
| LPM3540 | 260 | 35.0-0.2 | 4.0±0.2 | 8 | ≤250 |
| LPM3548 | 320 | 35.0-0.2 | 4.8±0.2 | 8.5 | ≤250 |
