Smart rings, tiny sensors, compact hearables — this 220mAh 401541 Tiny Lithium Polymer Rechargeable Battery. Our 401541 lithium polymer battery features a 220mAh capacity in a tiny form factor. It is an ideal power solution for mini smart wearables, smartwatches, and fitness trackers. Low self-discharge extends shelf life. Our QC rejects anything above 60mΩ IR. OEM 401541 battery with custom connectors and wire gauge — we've done 50+ variants. Hot sale for mini wearables this quarter. Bulk discount at 1,000 pcs.
Nominal Voltage: 3.7V
Delivery Voltage: 3.7V ~ 4.2V
Nominal Capacity: 220mAh
Measurement: 3.8 × 14.9 × 38.5mm
| Item | Specification |
| Model | 401541 |
| Material | Li-ion Polymer Battery |
| Normal Capacity (0.2C) | 220mAh |
| Minimum Capacity (0.2C) | 220mAh |
| Energy | 0.814Wh |
| Normal Voltage | 3.7V |
| Delivery Voltage | 3.85V ~ 4.05V |
| Standard Charge Method | Charge at maximum current. When the battery or pack terminal voltage reaches the charging limit voltage, charge at constant voltage until the charging current is less than or equal to 0.02 C, then stop charging. |
| Discharge Program | The battery or the battery pack carries on the constant current discharge with the maximum discharge current to the discharge termination voltage. |
| Max Charging Current | 1C CC/CV → 0.02C cutoff |
| Max Discharging Current | 1C CC/CV → 3.0V cutoff |
| Over-Discharging Current | 3.0V |
| Operation Temperature Range |
Charging: 0°C ~ 50°C Discharging: -20°C ~ 60°C |
| Allowable Maximum Surface Temperature |
Charging: Tmax ≤ 50°C Discharging: Tmax ≤ 60°C |
| Storage T/H Range (time) |
-20°C ~ 60°C (Less than 1 month) -20°C ~ 45°C (Less than 3 months) -20°C ~ 25°C (Less than 1 year) |
| Cycle Life |
≥ 300 times (Thickness expansion rate ≤ 10%) ≥ 500 times (Thickness expansion rate ≤ 12%) |
1. Extended calendar life
2. Overcharge tolerant
3. Vibration resistant
4. Low-profile packaging
5. Recyclable materials
220mAh 401541 Tiny Lithium Polymer Rechargeable Battery, Electric bicycle batteries, Balance scooters, Folding e-scooters, Smart door locks, Wireless security cameras, Portable massage guns etc.
1. Standard export carton packaging or Custom-made Package
2. Mode of Transport:
(1) By express UPS/DHL/FEDEX/TNT (It takes 3-15 days to arrive)
(2) By air cargo (It takes about one week to arrive)
(3) By sea shipment (It takes about one month to arrive)
3. Delivery 4-25 working days after payment and packing confirmation.
Hunan Yideng New Energy Co., Ltd
Hunan Yideng New Energy Co., Ltd., established in 2016, specialized in pouch cells, e-bike lithium and energy storage systems, Yideng handles both bulk standard orders and tailor-made battery designs. Multiple domestic & overseas offices cut response time to guarantee tight delivery schedules.
All products comply with the RoHS requirement and some of lipo batteries passed the certifications: UL1642, UL2054, CE, CB, KC, PSE, BIS, IEC62133, REACH, UN38.3 and so on.
Our company participates in many international exhibitions every year, including trade shows in Hong Kong, India, Japan, the United States, and more.
A1: We use DHL, UPS, FedEx, sea freight and air freight worldwide.
A2: We support delivery to your appointed local freight forwarder.
A3: Online real-time inspection stations filter defective cells during production.
A4: Send us test videos, and we arrange replacement or compensation quickly.
Address
Xin'an Village industrial Park, Yonglejiang Town, AnrenCounty, Chenzhou City, Hunan Province, China
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