The IMREN 77C 21700 4500mAh Type-C Lithium Battery is a high-performance rechargeable power source designed to deliver long-lasting energy for a wide range of devices. With its advanced lithium-ion technology, this battery offers a nominal capacity of 4500mAh, ensuring extended runtime and consistent performance. Engineered for efficiency and reliability, it is ideal for applications such as RC cars, high-powered flashlights, headlamps, toys, and other household electronics that require a stable and powerful energy supply. Its compact cylindrical form, with a diameter of 21mm and a height of 70mm, conforms to the standard 21700 battery size, ensuring compatibility with a variety of devices.

One of the standout features of this battery is its integrated Type-C charging port, which allows for convenient recharging without the need for an external charger. This built-in charging solution simplifies the recharging process, making it an excellent choice for users who prefer a hassle-free and space-saving approach. With the included USB cable, the battery can be easily charged from multiple power sources, such as power banks, laptops, car adapters, or wall chargers. The charging time is approximately 2 to 3 hours, depending on the power input, ensuring a quick and efficient energy replenishment process.

Designed for durability, the IMREN 77C 21700 battery is built to withstand over 500 charge cycles without significant capacity loss. Its low internal impedance, measured between 13-16mΩ, enhances energy efficiency by minimizing resistance, ensuring a stable power output throughout its lifespan. Unlike traditional disposable batteries, this rechargeable lithium-ion cell reduces waste and offers a sustainable energy solution for everyday use.

Safety is a primary focus in the design of the IMREN 77C, featuring an advanced 6-layer protection system that guards against overcharging, over-discharging, short-circuiting, and overheating. This intelligent battery management system ensures that the battery operates within safe parameters, protecting both the battery itself and the devices it powers. The built-in safety features extend the lifespan of the battery while preventing potential hazards associated with lithium-ion technology.

The battery's nominal voltage of 3.7V and discharge current of 8A make it suitable for medium to high-drain applications. It delivers a constant and stable voltage output, which is crucial for ensuring that electronic devices maintain optimal performance without fluctuations in power delivery. The CCCV (Constant Current, Constant Voltage) charging method, operating at 1.50A with a cut-off at 150mA, ensures precise and safe recharging, preventing overcharging and extending the battery’s overall health.

Temperature resilience is another key advantage of the IMREN 77C 21700 battery. It is designed to operate efficiently within a charging temperature range of 0°C to 45°C and a discharging range from -20°C to 60°C, making it an excellent choice for outdoor and extreme environment applications. The battery can also be safely stored at temperatures between -20°C and 45°C, with a recommended humidity level of ≤75% RH to preserve its integrity and longevity.

Specifications:

SHIPPING
The final shipping cost and estimated delivery timeframe will be available to you during checkout. Currently, we offer 3 International shipping methods which are steady and easy to track. Priority worldwide shipping, Premium ( Partial countries) and a faster Express shipping. The estimated times stated below are not guaranteed. An international package could experience delays like postal strikes or severe weather or Cov-19 situation. All shipping ways, PO Box address is not acceptable.

For some flashlights, there's a pure battery inside（phone charging）,If We can not ship your packages via USPS or DHL,we'll ship your package in another way.

Note:
When you place an order for just the batteries, for easy shipping, faster and safe delivery, the batteries are placed in the flashlights.

If you don’t receive your order within the estimated time frame provided below and suspect that it might be lost in transit, please contact Flashlightgo Support ( support@flashlightgo.com ) and we can look into the order with the courier. Lost-in-transit requests must be submitted to Flashlightgo Support within 3 months of the date of shipping or before the courier archives the tracking information.

Option 1.
Express by DHL/UPS/Fedex/Aramax/SF etc ( there may be tax need to pay in this way),
The estimated time of delivery is usually 3-7 work days depending on the country. Includes detailed tracking and confirmation of delivery.

Option 2.
Premium ( 6-10days, All tax and Duty Paid),
All tax and duty are prepaid to carrier by Flashlightgo before shipping, so you dont need to pay any tax or duty when you get it.

Option 3.
Priority shipping(1-2 Weeks, average 10 days)
If we marked it is with all tax and duty paid, all tax and duty are prepaid to carrier by Flashlightgo before shipping, so you dont need to pay any tax or duty when you get it.

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To ensure that you get the desirable product, we allow a seven-day product return period. Any product return application outside this period will not be entertained.
All returned product must be unused and the original package should be kept.

Return：
We do not offer return for personal products like socks and hats or food, magazine and fragile or dangerous products The original receipt must be available for application of return.

Discount products：
No product return for discount products

Gifts products：
If the item is marked as a gift when purchased and shipped directly to you, it cannot be exchanged , refunded or warranty.

Exchange：
We only replace items if they are defective or damaged.
Exchange service are offered only to wrong deliveries or product damage not caused by client. If needed, please email to info@flashlightgo.com.

Warranty
How long is the warranty period?
Flashlightgo warrants to the original purchaser that the Product(s) shall be free of any defect in material or workmanship for a period of one year for labor and one year for parts from the date of the original order except the items listed below:
Chargers,Batteries and Other Accessories: 3 months warranty

Should the Product(s) supplied by Flashlightgo prove defective because of improper workmanship or material as reasonably determined by us, Flashlightgo agrees, at its option, to either repair or replace the Product free of charge, excluding any shipping or handling charges.

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