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★Li-polymer High energy density,customizable.1.jpg

502245 3.7V 500mAh rechargeable Li-polymer Battery

★ Ultra-thin and compact, ideal for portable and wearable devices.
★ Automated assembly with strict quality control.
★ Low internal resistance for stable, efficient power delivery.
★ Low self-discharge for extended standby time.
★ Built-in protection against overcharge and over-discharge.

Product Parameters

Product Models

Customization Support

Nominal Voltage	3.7V	Nominal Capacity	500mAh
Size	5.222.547.5mm	Rough weight	10g
Battery Type	Li-polymer	Cycle life	500 times
Standard charge	0.2C	Max charge	1.0C
Standard discharge	0.2C	Max discharge	1.0C
Charge temperature	0-45℃	Discharge temperature	-10~ +60℃

Product Introduction

The 502245 3.7V 500mAh rechargeable Lithium Polymer battery delivers reliable power in a compact, lightweight package. Utilizing gel polymer electrolyte and flexible aluminum-plastic packaging, it ensures absolute safety with no risk of leakage, fire or explosion. This 500mAh cell offers stable discharge voltage and low self-discharge, supporting 500+ charge cycles. Its slim profile and customizable size make it adaptable to various device requirements, providing consistent performance for space-constrained applications where reliability is paramount.

Product Models List

below are some our mature battery cell models.

Model	Battery Material	Capacity	Voltage	Life cycle	Thickness(±0.2)	Width(±0.5)	Length(±0.5)	Weight(g)
HW552535	Polymer	450	3.7V	≥500	5.5	25.0	35.0	10.0
HW503450	Polymer	900	3.7V	≥500	5.0	34.0	50.0	17.2
HW523450	Polymer	1000	3.7V	≥500	5.2	34.0	50.0	18.5
HW603450	Polymer	1000	3.7V	≥500	6.0	34.0	50.0	18.5
HW623255	Polymer	1100	3.7V	≥500	6.2	32.0	55.0	19.0
HW803048	Polymer	1200	3.7V	≥500	8.0	30.0	48.0	25.9
HW354085	Polymer	1300	3.7V	≥500	3.5	40.0	85.0	28.0
HW455060	Polymer	1400	3.7V	≥500	4.5	50.0	60.0	28.3
HW852848	Polymer	1500	3.7V	≥500	8.5	28.0	48.0	29.2
HW603756	Polymer	1500	3.7V	≥500	6.0	37.0	56.0	29.0
HW535056	Polymer	1600	3.7V	≥500	5.3	50.0	56.0	30.5
HW385085	Polymer	1600	3.7V	≥500	3.8	50.0	85.0	30.5
HW405070	Polymer	1620	3.7V	≥500	4.0	50.0	70.0	31.0
HW103450	Polymer	1800	3.7V	≥500	10.0	34.0	50.0	36.0
HW605060	Polymer	2000	3.7V	≥500	6.0	50.0	60.0	43.5
HW754085	Polymer	2700	3.7V	≥500	7.5	40.0	85.0	55.0
HW705060	Polymer	3000	3.7V	≥500	7.0	50.0	60.0	59.5
HW606090	Polymer	4000	3.7V	≥500	6.0	60.0	90.0	77.5

Product Application

This versatile 502245 cell powers a wide range of modern devices. It is ideal for portable medical equipment like digital thermometers and blood pressure monitors, where safety is critical. In consumer electronics, it drives smart watches, fitness trackers and wireless headphones with enduring performance. The battery also excels in industrial handheld terminals, POS systems and smart locks, delivering stable power for daily operations. Its compact form makes it perfect for GPS trackers and pet collars, combining lightweight portability with reliable, long-lasting energy.

Product Certification

Howell Li-polymer batteries have been approved by a series of authoritative certificates such as UL, CB, IEC62133, UN38.3, CE, Rohs, Reach, EU, BIS, KC, 3C, BSMI, PSE, CTIA, UKCA, WERCS and so on. All products comply with international and domestic battery industry standards, with reliable quality and complete after-sales guarantee.

Product Shipping

Howell batteries can be used in various electronic products, including industrial products, such as Bluetooth speaker, Auto electronics, GPS, Digital products, Portable DVD, Tablet PC, POS terminal, PDA, Two way radio, Power bank, RC toys, Medical device, Electric bike, Electric scooter, Solar Street Light, Security Products, Solar&wind Energy Storage System, etc.

Howell Energy Co., Ltd is a high-tech enterprise group dedicated to green and sustainable energy. With over 20 years of focus in the battery industry, we have become one of China's Top 100 Lithium Battery Export Enterprises. Through continuous R&D innovation and scientific management, we are committed to delivering professional, efficient clean energy solutions to our global customers.

Move beyond standard batteries that force you to compromise. We specialize in fully customizable battery solutions engineered to fit your exact specifications.

Whether you need a precise form factor to slip into an innovative design, unique voltage and capacity for peak performance, or specialized connectors for seamless integration—we make it possible. From compact wearables to robust industrial equipment, our engineering team collaborates with you to develop a battery that powers not just your device, but your ambition.

Ready to Power Your Unique Project? Contact our technical team today to start your custom battery solution.

Customize your Battery

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