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Item #:
73240296
3.7V 21700 Batteries 5000mAh Rechargeable Li-ion Cell for Flashlight Flat Top Battery
88% of respondents would recommend this to a friend
Item #:
73240296
NAD 749
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
In stock
Imported from USA store
QTY:
Only 12 items left in stock.
Order now and get it around Wednesday, October 07
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Long-lasting and rechargeable 21700 lithium-ion battery with multiple protections
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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 5000mAh capacity, this battery provides extended runtime for flashlights, ensuring long-lasting performance during outdoor activities or emergencies.
Rechargeable
Designed for multiple recharges, this Li-ion cell reduces waste and offers cost-effectiveness, making it an eco-friendly choice for consistent power needs.
Flat Top Design
The flat top design ensures compatibility with a wide variety of flashlights and devices, enhancing ease of use and versatility for different applications.
Product Details
- Style: Flat Top
- Size: 21700
- Nominal capacity: 5000 mAh
- Voltage: 3.7V
- Battery type: Li-ion
- Dimension: 70.6*21.2*21.2 mm
- Multiple protections including temperature, short circuit, overcharge, and overcurrent protection
- Long-lasting and rechargeable with high capacity, small size, and light weight
- Applicable for flashlights, headlights, doorbells, garden lights, and solar lights
- WARNING - California Proposition 65No Warning
| Rechargeable | Y |
| Volts | 3.7 V |
| Battery capacity | 5000 mAh |
| Brand | CBJJ |
| Has written warranty | No |
| Piece count | 2 |
| Model | 21700 |
| 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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Flashlight Users
Ideal for high-performance flashlights, providing long-lasting power for extended usage in outdoor settings.
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Gadget Enthusiasts
Perfect for tech lovers who need reliable rechargeable batteries for a variety of electronic devices and accessories.
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DIY Projects
Great for hobbyists building custom electronic projects requiring powerful, rechargeable lithium-ion cells.
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Low-Power Devices
Not suitable for devices that require low voltage or low-capacity batteries, as they may be overpowered.
Product Description
About This Item
Introducing the 3.7V 21700 Batteries 5000mAh Rechargeable Li-ion Cell for Flashlight Looking for a reliable and high-capacity battery for your flashlight? Look no further! Our 3.7V 21700 Batteries are the perfect choice for power-hungry devices like flashlights. These batteries come with a whopping 5000mAh capacity, ensuring long-lasting performance and allowing you to use your flashlight for extended periods without worrying about running out of power. Whether you're exploring the great outdoors or working on a project in low-light conditions, these batteries have got your back. Designed with convenience in mind, these batteries feature a flat top design, making them compatible with a wide range of devices, including flashlights, headlamps, and more. Simply insert these batteries into your device and experience reliable and consistent performance. Not all batteries are created equal, and our 21700 batteries are no exception.
Manufactured with top-of-the-line materials and advanced technology, these batteries deliver exceptional performance and durability. They are built to withstand the demands of everyday use and provide a longer lifespan compared to other rechargeable batteries. Looking to buy 21700 batteries online? Look no further than Ubuy! We offer a wide selection of high-quality rechargeable batteries, including our popular 5000mAh option. With our easy-to-use website, you can conveniently browse and compare different battery options, ensuring you find the perfect fit for your needs. Investing in rechargeable batteries not only saves you money in the long run but also reduces your environmental impact.
Say goodbye to single-use batteries and opt for a more sustainable and cost-effective solution. So why wait? Upgrade your flashlight's power source with our 3.7V 21700 Batteries 5000mAh Rechargeable Li-ion Cell for Flashlight and never worry about running out of power during important moments. Trust Ubuy for all your battery needs and enjoy reliable performance that lasts.
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Customer Questions & Answers
-
Question:
How many times can the battery be recharged?
Answer: It can be recharged up to 1000 times when fully or partially drained. -
Question:
What devices is it compatible with?
Answer: Flashlights, headlights, doorbells, garden lights, solar lights, and more. -
Question:
What are the dimensions of the battery?
Answer: The battery has dimensions of 70.6*21.2*21.2 mm.
CBJJ All Batteries Editorial Review
The 3.7V 21700 Batteries 5000mAh Rechargeable Li-ion Cell for Flashlight Flat Top Battery stands out with its impressive 5000mAh capacity, making it ideal for high-drain devices like flashlights. Weighing only 0.5 lbs, this lightweight battery provides significant power without adding extra bulk. Users will appreciate the rechargeable nature, allowing for multiple uses without needing replacements. This battery is compatible with various devices, enhancing its versatility. However, it does not come with a written warranty, so users should handle it with care for optimal longevity.
Customer Reviews & Ratings
9 customers ratings
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5 Star
77%
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4 Star
0%
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3 Star
11%
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2 Star
0%
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1 Star
11%
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Pros
- High capacity of 5000mAh for extended use
- Lightweight design at only 0.5 lbs
- Rechargeable, reducing the need for replacements
- Compatible with multiple devices and applications
- Flat top design for easy installation
Cons
- Lacks a written warranty for peace of mind
Platform Trust & Buyer Confidence
JK
Jasmin
Verified buyer
“Great products and very good service: very easy and very fast international delivery.”
9 September 2026 · via Trustpilot
AG
Anke
Verified buyer
“Wonderful online shopping experience, smooth transaction from the start. Payment method works conveniently and delivery is unexpectedly fast and reliable. You go the extra mile for service. What makes this even more amazing, you deliver to Namibia. I will remain a happy Ubuy customer and will increase my purchases for sure! Thank you!”
10 September 2026 · via Trustpilot
H
Hazel
Verified buyer
“Very easy to find the products what you need, and so fast delivery, that’s why I highly recommended to others costumers to used ubuy.”
10 September 2026 · via Trustpilot
O
Opaleye
Verified buyer
“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”
11 September 2026 · via Trustpilot
AC
Adele
Verified buyer
“Easy to find and order what you want on the website. Delivery is quick to the UK”
8 September 2026 · via Trustpilot
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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.
- Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.
NAD 749
Order now and get it around Wednesday, October 07
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
Only 12 items left in stock.
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PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.
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Features & Benefits
- 3.7v 5000mAh 21700 lithium-ion battery
- Provides 6 protections for stability
- Durable materials and high-quality
- Small size and light weight
- Ideal for emergencies and outdoor adventures
- Suitable for various devices
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