3.7V 850mAh LiPo Battery (603048) - 3.14Wh Lithium Polymer Cell with Protection PCB

Specifications

• Model Number: 603048P

• Chemistry: Lithium Polymer (LiPo)

• Nominal Voltage: 3.7V

• Fully Charged Voltage: 4.2V

• Rated Capacity: 850mAh (3.14Wh)

• Optimal Discharge Rate: 0.2C (approx. 170mA)

• Dimensions (L x W x H): 48mm x 30mm x 6mm

• Cable Length: ~50mm

• Connector: Open-ended (Bare wire)

• Built-in Protection: Overcharge, Over-discharge, Short Circuit

Key Applications and Projects

• Long-Range Sensor Nodes: Powering ESP32 boards equipped with LoRa transceivers to beam agricultural or environmental data across kilometers of farmland.

• DIY Smart Instruments: Providing extensive runtime for portable oscilloscopes, custom multimeters, or Geiger counters equipped with large LCD screens.

• Portable Emulation: Acting as a high-capacity replacement or primary cell for custom 3D-printed handheld gaming consoles.

Unlock New Capabilities (Project Evolution)

• The Cellular Asset Tracker: 850mAh gives you the headroom needed for cellular data bursts. Evolve your tracking project by pairing this battery with a SIM800L GSM module and a tiny NEO-6M GPS receiver. Because cellular modules can spike to over 1A to connect to a cell tower, the robust chemistry of the 850mAh cell can handle the draw without browning out the microcontroller. Program the board to sleep, wake up every 4 hours, grab GPS coordinates, and text the location to your phone—creating a discrete, long-lasting anti-theft tracker for your bicycle or motorcycle!

Package Includes:

• 1 x 603048P 850mAh 3.7V Lithium Polymer Battery pack (with internal protection PCB and 50mm open-ended wire)

FREQUENTLY ASKED QUESTIONS (FAQ)

1. What does "603048" mean? It signifies the standard dimensions of the bare internal cell: approximately 6.0mm thick, 30mm wide, and 48mm long.

2. Why does the picture say "NovaPlus"? We source from top-tier manufacturers. While the photo shows NovaPlus branding, you may receive a generic cell with identical guaranteed specifications (850mAh, 603048 footprint) based on current stock.

3. What is the nominal voltage of this battery? The nominal (average operating) voltage is 3.7V.

4. What is the voltage when fully charged? A fully charged 1S LiPo battery will read exactly 4.2V on a multimeter.

5. Does this battery have built-in protection? Yes, a miniature protection PCB is hidden under the yellow Kapton tape at the top of the battery.

6. What does the protection circuit actually do? It protects the battery chemistry from catching fire due to overcharging, prevents permanent damage from over-discharging, and cuts power instantly if a short circuit occurs on your output wires.

7. Are the wires open-ended or do they have a plug? This battery ships with 50mm open-ended (bare) wire leads. It does not come with a pre-crimped plastic connector.

8. Which wire is positive? The red wire is Positive (+), and the black wire is Negative (-).

9. What does "discharge at 0.2C" mean? "C" represents the total capacity of the battery. 0.2C means 20% of 850mAh, which is 170 milliamps (170mA). To get the absolute maximum lifespan and extract the true 850mAh capacity out of this battery, your circuit should optimally draw around 170mA continuously.

10. Will it break if my project draws more than 170mA? No, 170mA is just the optimal rate. An 850mAh battery can easily handle much higher temporary bursts (like a cellular module transmitting data or a motor spinning), but pulling very heavy currents constantly will drain it faster and slightly reduce the overall efficiency.

11. Can I charge this with a standard TP4056 module? Yes! A standard TP4056 module pushes 1000mA (1A). For an 850mAh battery, 1A is roughly a 1.17C charge rate, which is very safe and perfectly acceptable for this size cell. It will fully recharge the battery in about an hour.

12. Can I wire this directly to a 5V USB cable to charge it? ABSOLUTELY NOT. Applying raw 5V directly to a LiPo battery will cause it to swell, vent toxic gas, and catch fire. You must use a dedicated Lithium-Ion charger IC.

13. Can I power a 5V Arduino Uno with this? A standard Arduino Uno expects 5V. This battery only outputs 3.7V. You would need a "Boost Converter" module to step the 3.7V up to 5V.

14. What microcontrollers work best with this? Low-power 3.3V boards like the ESP32, ESP8266, Raspberry Pi Zero W, and 3.3V Arduino Pro Minis are ideal companions.

15. How long are the wires? The flexible wire leads are approximately 50mm (about 2 inches) long.

16. Can I cut the wires to make them shorter? Yes. CRITICAL WARNING: Always cut the wires one at a time. Cutting both the red and black wires simultaneously with metal snips will short-circuit the battery!

17. Can I wire two of these in series to get 7.4V? It is highly discouraged to wire individual, internally protected LiPo cells in series. The two independent protection boards can conflict and cause charging and discharging failures.

18. Can I wire two in parallel to get 1700mAh (1.7Ah)? Yes, but only if both batteries are measured with a multimeter and are at the exact same voltage (e.g., both exactly 3.8V) before connecting them.

19. Why does my battery look puffy or swollen? LiPo batteries puff up when damaged, old, or severely over-discharged. If your battery swells like a balloon, stop using it immediately and safely recycle it.

20. How should I store this battery if I am not using it for a while? Never store LiPo batteries fully charged (4.2V) or fully dead (3.0V) for long periods. Store them at a "storage charge" of roughly 3.8V in a cool, dry, fire-safe location.