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802540 3.7V 850mAh LiPo Battery
$1.00
802540 3.7V 850mAh lithium polymer battery, compact 25x40mm cell for GPS pet trackers, handheld vacuums and portable oxygen concentrators. CE/RoHS/UN38.3 certified.
3.7V 850mAh LiPo battery for GPS trackers designs from HNF Battery (model HNF-802540) are engineered for compact tracking devices that need reliable, long-lasting power in a slim footprint. The 8mm-thin profile pairs with dependable PCM protection, making it a trusted choice for OEM integrators worldwide.
The HNF-802540 is an 8mm-thin lithium polymer battery delivering 850mAh at 3.7V in a compact 25 x 40mm format. Its moderate thickness and capacity make it a versatile choice for portable handheld vacuum cleaners, wireless pet fences, GPS pet trackers, portable oxygen concentrators, and compact emergency lighting systems. Reliable PCM protection ensures safe operation in daily use.
Model number: HNF-802540 850mAh 3.7V
Nominal voltage: 3.7 V
Nominal capacity: 850 mAh
Dimension: 8.0 x 25 x 40 mm
Cell configuration: 1S1P
Certification: CE / RoHS / IEC62133 / UN38.3 / MSDS
Warranty: 12 months
Specifications
| Item | Rating | Remark |
|---|---|---|
| Model | HNF-802540 850mAh 3.7V | |
| Nominal Capacity | 850 mAh | Standard discharge (0.2C5A) after standard charge |
| Nominal Voltage | 3.7 V | |
| Dimension | 8.0 x 25 x 40 mm | |
| Weight | Approx: 18 g | |
| Cut-off Charge Voltage | 4.2 V | |
| Cut-off Discharge Voltage | 3.0 V | |
| Standard Charge | 0.2C CC charge to CV then CV till current ≤0.01C | Charge time: approx. 7.0 h |
| Standard Discharge | Discharge at 0.2C5A to cut-off voltage | |
| Cycle Life | ≥500 cycles, 80% capacity retention | |
| Operating Temperature | Charge 0~+45℃ / Discharge -20~+60℃ | |
| Storage Temperature | -10~+45℃ | |
| Storage Humidity | 45-75% RH |
Application Field
Portable handheld vacuum cleaners, wireless pet fence collars, GPS pet trackers, portable oxygen concentrators, compact emergency lighting systems.
Main Advantages
- High energy density, stable 3.7V nominal voltage
- High-drain capable, stable discharge performance
- Lightweight and ultra-thin; dimensions customizable on request
- Extremely safe, low self-discharge, long cycle life (≥500 cycles, 80% capacity retention)
- Reliable PCM protection against over-charge and over-discharge
- Wide operating temperature: -20℃ ~ +60℃
FAQ
Q: Do you accept customization?
A: Yes. We are a professional custom lithium battery manufacturer. Share your required voltage, capacity, and dimensions.
Q: Can this be shipped by air?
A: 3.15 Wh — well within the 100Wh limit, suitable for air freight with MSDS & UN38.3 documentation.
Q: Do you offer samples?
A: Samples are available; sample cost is refunded once a bulk order is confirmed.
Q: What is the MOQ?
A: In-stock items have no MOQ. For customized cells, MOQ is typically 3,000-10,000 pcs depending on size and capacity.
Q: How is quality assured?
A: Multi-stage quality control across R&D, incoming inspection, production, pre-shipment, and after-sales, fully certified with CE, RoHS, and IEC62133.
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