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Item #:
87548081
3.7V 21700 Rechargeable Battery, 3.7 Volt Battery 5000mAh for Flashlights, Headlamps & More, 2 Pack, 240719
Item #:
87548081
BHD 17
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Imported from USA store
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Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.
What Stands Out
High Capacity
With a powerful 5000mAh capacity, this battery offers extended usage time for flashlights and headlamps, ensuring that your devices run longer without frequent replacements.
Versatile Use
Designed for various devices, including flashlights and headlamps, these 21700 batteries are perfect for camping, hiking, or emergency kits, providing reliable power wherever you go.
Rechargeable Convenience
These 3.7V rechargeable batteries reduce waste and save money over time. Simply recharge and reuse, making them a sustainable choice for energy-conscious consumers.
Product Details
| Item Weight | 0.5 lbs (230 grams) |
Dangerous Goods
To avoid the delay in customs clearance process for Dangerous Goods, the shipment shall be opened at our warehouse facility to check the severity of hazardous components. Please see the list of Dangerous goods here.
Who Should Buy?
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Outdoor Enthusiasts
Ideal for campers and hikers needing reliable power sources for flashlights and headlamps during extended trips.
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Professionals
Great for professionals using high-powered tools and devices in demanding environments where battery longevity is essential.
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Gadget Users
Perfect for tech lovers who frequently need high-capacity batteries for various portable and rechargeable electronics.
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Casual Users
Not suitable for casual users who need infrequent battery replacements; a standard battery may be more convenient.
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Low-Power Devices
Inappropriate for devices that require lower voltage batteries, as this may lead to performance issues or damage.
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Non-Rechargeable Needs
Not recommended for users looking for non-rechargeable batteries, as this product is specifically designed for recharging.
Product Description
3.7V 21700 Rechargeable Battery, 3.7 Volt Battery 5000mAh for Flashlights, Headlamps & More, 2 Pack, 240719
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Customer Questions & Answers
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Question:
What devices are compatible with the 3.7V 21700 Rechargeable Battery?
Answer: The 3.7V 21700 Rechargeable Battery is designed to work effectively with various devices, including flashlights, headlamps, and other electronic devices that require a stable 3.7V power source. This compatibility makes it ideal for outdoor enthusiasts and professionals who rely on robust lighting solutions during activities like camping, hiking, or emergency situations. -
Question:
How long does it take to charge the 3.7V 21700 Rechargeable Battery?
Answer: Charging time for the 3.7V 21700 Rechargeable Battery typically ranges from 4 to 6 hours, depending on the charging method used. Utilizing a compatible charger will ensure that the battery reaches optimal capacity quickly and safely. Users should consider charging it overnight or during times of low use to keep their devices ready for action whenever needed. -
Question:
What is the lifespan of the 3.7V 21700 Rechargeable Battery?
Answer: The lifespan of the 3.7V 21700 Rechargeable Battery can vary, but it is generally rated for approximately 500 charge cycles. Proper usage and storage can maximize battery life, including keeping it at room temperature and avoiding deep discharges. This longevity makes it a cost-effective power solution for frequent users of devices requiring reliable energy. -
Question:
Can I use these batteries in place of 18650 batteries?
Answer: While the 3.7V 21700 Rechargeable Battery and the 18650 battery can offer similar voltages, they are not interchangeable due to their different sizes and capacities. The 21700 battery, with its larger physical dimensions and higher energy capacity, provides longer runtimes in high-drain devices. Always check device compatibility before substitution to ensure optimal performance. -
Question:
Is it safe to use 3.7V 21700 Rechargeable Batteries in high-drain devices?
Answer: Absolutely! The 3.7V 21700 Rechargeable Battery is specifically engineered to handle higher drain applications, making it perfect for demanding devices like powerful flashlights and headlamps. Its robust design ensures stable performance under heavy use, resulting in longer operational periods without compromising safety. -
Question:
What is the difference between standard and protected 21700 batteries?
Answer: Standard 21700 batteries lack built-in safety features, while protected versions include electronic circuitry that prevents over-discharge, over-charge, and short circuits. Choosing protected batteries increases safety when using them in high-drain devices. If your device has specific safety requirements, opting for protected versions is the best practice. -
Question:
How can I maximize the performance of my 3.7V 21700 Rechargeable Battery?
Answer: To maximize performance, ensure to use a compatible charger and avoid exposing the battery to extreme temperatures. Regularly charge it when not in use and store it in a cool, dry place. These steps can enhance battery efficiency, leading to extended runtime for your devices during critical moments. -
Question:
Why should I choose to buy a pack of 8 batteries?
Answer: Purchasing a pack of 8 3.7V 21700 Rechargeable Batteries ensures you have ample backup power for extended trips or emergencies. It also provides convenience and cost-effectiveness, as you won't have to buy batteries frequently. This is particularly advantageous for avid outdoors enthusiasts who rely on multiple devices. -
Question:
Are these batteries environmentally friendly?
Answer: Yes, rechargeable batteries like the 3.7V 21700 contribute to sustainability by reducing waste compared to single-use batteries. By switching to rechargeable options, you can lessen your environmental impact while still enjoying reliable power for your devices. It's an eco-friendly choice that supports long-term energy solutions. -
Question:
Where can I buy 3.7V 21700 Rechargeable Battery, 3.7 Volt Battery 5000mAh for Flashlights, Headlamps & More, 8 Pack, 240719?
Answer: You can purchase the 3.7V 21700 Rechargeable Battery, 3.7 Volt Battery 5000mAh for Flashlights, Headlamps & More, 8 Pack, 240719 at Ubuy. They offer a variety of products and ensure that you're getting high-quality batteries to power your devices effectively.
Nutritionist's Take
As a nutritionist, my focus is primarily on food and dietary products, so the review of a rechargeable battery does not fall directly under my expertise. However, it is essential to consider the indirect health implications of using sustainable energy sources, such as rechargeable batteries. Utilizing rechargeable batteries can reduce environmentally harmful waste compared to single-use batteries, which is beneficial for overall health and planetary well-being. Potential drawbacks include the safety risks associated with lithium-ion batteries, including leakage and explosion, if not used or disposed of properly. While this product does not have nutritional benefits, it contributes positively to sustainability efforts, impacting public health indirectly by fostering a cleaner environment. Ultimately, while batteries are not a health food, their responsible use can support eco-friendly practices that promote a healthier planet.
CWUU 3.7V Editorial Review
**** The 3.7V 21700 Rechargeable Battery is designed to power a variety of devices, including flashlights and headlamps, promising a robust capacity of 5000mAh. However, customer experiences highlight a significant discrepancy between its advertised performance and actual capabilities. Multiple users have conducted tests to ascertain the true capacity of these batteries, revealing that they frequently fall short of the claimed specifications. One reviewer reported capacities of just over 3000mAh, while others noted figures closer to 4900mAh, which, although closer to the marketed value, still raises concerns about reliability. Additionally, there are concerns regarding the charge state in which the batteries are shipped. Users pointed out that receiving batteries almost fully charged is potentially harmful for lithium batteries, calling it "a big no-no." Overall, while the batteries may fit adequately in devices and provide functionality for lower capacity needs, the Consensus among users is that they do not perform to the high standards expected from a product marketed with a significant power rating. For those specifically seeking higher-capacity batteries, these may not be the best option. **
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Pros
- Adequate fit in devices like flashlights.
- Some units perform close to the advertised capacity.
Cons
- Significant variation in actual capacity (often reported under 3000mAh).
Product Price History
Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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BHD 17
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Features & Benefits
- 3.7V 21700 rechargeable battery with a capacity of 5000mAh.
- Perfect for use in flashlights, headlamps, and various devices.
- Comes in a convenient 4-pack for extended use.
- Designed with safety in mind, minimizing risks like overcharging and short circuits.
- Excellent customer support available 24/7 for any inquiries.
- Ensure compatibility by verifying dimensions before purchase.