Lithium Polymer Slim 503738 3.85V 830mAh High‐Voltage LiPo Battery Cell

LiPo Battery about Baby Monitor, MP3, Remote Control | Rechargeable, High capacity

Nominal Voltage
3.85V

Nominal Capacity
830mAh

Nominal Capacity
3.196Wh

Designed for compact devices like baby monitors and MP3 players, this slim 503738 3.85V 830mAh LiPo battery provides high voltage and stable performance. Lightweight, rechargeable, and dependable, it ensures long-lasting energy for small electronics.

Lithium Polymer Battery

3.85V 830mAh LiPo Battery

Reliable High-Voltage Performance

Built around the slim 503738 LiPo cell (3.85 V, 830 mAh) with an integrated protection board supporting 1C continuous and 2C peak discharge, plus a 10 K NTC thermistor for precise temperature monitoring. The UL1571/28 AWG wire harness (green NTC lead, black negative, red positive) ensures safe, low-resistance connections for IoT devices, wearables, and other high-voltage applications.

Himax Factory-Direct Wholesale & Full Customization

Leverage volume pricing on bulk LiPo orders straight from our factory and tailor every aspect to your project: adjust protection C-rates, thermistor specifications, wire-out configurations, labeling, and packaging. Ideal for OEMs and contract manufacturers seeking flexible, high-quality battery solutions.

Specifications

OEM/ODM Rechargeable Li-ion Polymer 3.85V 830mAh Customized Lipo Battery Pack
Nominal Voltage
3.85V
Nominal Capacity
830mAh
Energy
3.196Wh
Charge Voltage
4.4V
Discharge cut-off voltage
3.0V
Charge Method
CC/CV
Standard Charge Current
166mA
Max. Charge Current
415mA
Standard Discharge Current
166mA
Max. Continues Discharge current
830mA
Cycle Life
300 times
Dimension
Max 5.2*37.5*41.0mm
Weight
Approx.14g
Storage Temperature
0°C~45°C

Frequently Asked Questions

Himax Battery, as a professional wholesale battery manufacturer, offers a wide range of lithium ion batteries, lithium iron phosphate batteries, nickel metal hydride batteries, and Lipo batteries to meet your different needs with the best ex-factory price and thoughtful customized service.
1. What is a LiPo (Lithium-Polymer) battery and how does it work?
LiPo batteries are rechargeable cells with a polymer electrolyte, offering high energy density and a nominal voltage of 3.7 V per cell (fully charged at 4.2 V and minimum safe at 3.0 V). They’re often built in series (S) and parallel (P) configurations—e.g. a “2S2P” pack uses two cells in series for higher voltage, each duplicated in parallel for greater capacity.
2. How do I safely charge a LiPo battery?
Temperature & Rate – Always charge within 0 °C to 50 °C and never exceed a 1C charge rate (i.e. 1× the pack’s capacity in amps). If you’re unsure of the safe rate, default to 1C to minimize fire risk. Supervision & Environment – Never leave a LiPo unattended while charging; use a LiPo-safe bag or fire-resistant enclosure, and avoid charging inside vehicles or near flammable materials.
3. What’s the best way to store LiPo batteries long-term?
Storage Voltage – Keep at 40–60 % state of charge (roughly 3.8–3.9 V per cell). Storing fully charged or fully depleted cells for weeks can degrade capacity and reduce lifespan. Safety Precautions – Place packs in fire-resistant containers or LiPo bags, and store in a cool, dry area away from direct sunlight or combustible materials.
4. How can I prolong the cycle life of my LiPo batteries?
Usage & Replacement – Expect a gradual performance drop of about 3.8 % over the first 100 cycles, and plan to replace packs after 200–300 full cycles or sooner if you see swelling or capacity loss. OEM Quality Matters – Choosing high-precision, matched-cell packs with robust protection boards and thermistors from reputable factories—like Himax with its advanced BMS balancing and tight cell tolerances—can significantly extend overall battery life.
5. Where can I purchase reliable, customizable LiPo battery packs?
For volume pricing, fast lead-times and full OEM flexibility—voltage, capacity, C-rates, connector types, wire-outs and labeling—factory-direct suppliers such as Himax are top choices. Himax’s LiPo division supports low-MOQ wholesale orders and custom engineering to fit aerospace, drone, wearable or IoT applications.

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Himax Battery is a professional lithium battery manufacturing factory near you we provide free customized battery solutions.

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