Features & Benefits
- Quality Protected Li-ion Rechargeable Battery
- In Built Safety Circuitry
- Over 500 charge-discharge cycles
- Nominal Voltage: 3.7V
- Nominal Capacity: 2100mAh
- Size:16.7*68.2mm±0.2mm
- Home Page /
- Health & Household /
- Household Supplies /
- Household Batteries /
- 3.7V /
- Keeppower 16650 2100mAh 3.7V Rechargeable li-...
0 ratings
Keeppower 16650 2100mAh 3.7V Rechargeable li-ion Protected Battery 7.77Wh Replacement for 2 x CR123 P1665C
0 ratings
Write a review
Out of stock
Imported from USA store
Secured transaction
Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.
Our Top Logistics Partners
KeepPower 16650 2100mAh Protected Li-ion Rechargeable Battery is a quality battery with in-built safety circuitry and offers over 500 charge-discharge cycles.
Fast
Shipping
Free
Return*
Secure Packaging
100% Original Products
PCI DSS Compliance
ISO 27001 Certified
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 robust 2100mAh capacity, this battery provides prolonged usage, ensuring your devices run longer without frequent replacements, perfect for high-drain devices.
Rechargeable Design
Eliminate waste and save money with this rechargeable li-ion battery, offering hundreds of recharges and reducing the need for disposable batteries.
Protection Circuit
Equipped with an integrated protection circuit, this battery safeguards against overcharging and short-circuits, enhancing safety and longevity compared to standard cells.
Product Details
- KeepPower 16650 2100mAh Protected Li-ion Rechargeable Battery P1665C
- Nominal Capacity: 2100mAh, Minimum Capacity: 2000mAh, Typical Capacity: 2050mAh
- Nominal Voltage: 3.7V, Size: 16.7*68.2mm±0.2mm, Weight: about 36g
- In Built Safety Circuitry with Protection Circuit against over charge, over discharge, over current, and short circuit
- 4.25 volts max voltage and over 500 charge-discharge cycles
- Compatible with flashlights like Olight M1T Raider Plus, arisaka 600 series light, Streamlight PolyTac (Does not fit P2X)
| Item Weight | 0.1 lbs (50 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?
-
Eco-Conscious Users
Ideal for users wanting to reduce waste by using rechargeable batteries instead of disposable ones.
-
High-Capacity Needs
Perfect for devices requiring longer battery life, with a capacity of 2100mAh providing extended usage.
-
Certain Equipment Types
Suitable replacement for devices that typically use CR123 batteries, ensuring compatibility and performance.
-
Low Drain Devices
Not ideal for devices that require low capacity, where the cost-effective CR123 disposable option is preferred.
-
Budget Shoppers
Users seeking the cheapest option may find disposable CR123 batteries more affordable than rechargeable alternatives.
-
Occasional Usage
Those who only use batteries infrequently may not benefit from investment in rechargeable options like this model.
Product Description
Keeppower 16650 2100mAh 3.7V Rechargeable li-ion Protected Battery 7.77Wh Replacement for 2 x CR123 P1665C
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What devices are compatible with Keeppower 16650 2100mAh batteries?
Answer: The Keeppower 16650 2100mAh battery is designed to replace two CR123 batteries, making it ideal for high-drain devices such as flashlights, cameras, and other portable electronics. Its compact size and high capacity allow for extended usage, ensuring that devices run efficiently without frequent interruptions. This battery is particularly beneficial for users looking to reduce replacement battery waste while enjoying longer performance in devices frequently used for photography or outdoor activities. -
Question:
How can I charge the Keeppower 16650 battery safely?
Answer: Charging the Keeppower 16650 battery safely requires a compatible lithium-ion charger designed for 3.7V cells. It is crucial to avoid overcharging or using chargers that do not support lithium-ion technology. This battery can typically be charged using standard li-ion chargers, ensuring they provide the correct voltage and current output. Always follow the manufacturer's instructions when charging, and monitor the charging process to prevent overheating, ensuring both the longevity and safety of your battery. -
Question:
What are the benefits of using a protected lithium-ion battery?
Answer: A protected lithium-ion battery, such as the Keeppower 16650, includes an internal circuit that safeguards against over-discharge, overcharge, and short circuits. This added protection enhances safety during use and charging, significantly reducing the risk of incidents due to improper handling or malfunction. As such, using this battery is a wise choice for high-power devices, where safety is a top priority, allowing users to focus on performance without worrying about potential hazards. -
Question:
What is the runtime of the Keeppower 16650 battery?
Answer: The runtime of the Keeppower 16650 2100mAh battery depends on the power requirements of the device it's used in. For example, a flashlight that typically uses two CR123 batteries may operate for several hours on a single Keeppower 16650 due to its higher capacity. This extended runtime is especially beneficial during camping trips or emergencies, where access to power sources may be limited, and consistent light output can be crucial. -
Question:
Can I use Keeppower 16650 batteries in place of CR123 batteries?
Answer: Yes, the Keeppower 16650 can effectively replace two CR123 batteries. This battery configuration not only provides equivalent voltage but also offers a higher capacity, resulting in longer usage time for devices that accept CR123 batteries. Users should verify device compatibility due to size differences, but generally, this battery is an excellent choice for enhancing performance in compatible devices. -
Question:
What are the safety features of the Keeppower 16650 battery?
Answer: The Keeppower 16650 battery incorporates multiple safety features, including a built-in protection circuit that prevents over-current and short-circuit situations. In addition, its design minimizes the risk of overheating and swelling, ensuring reliability during intense use. This makes it an optimal choice for users who prioritize safety in high-power applications like surveillance cameras and outdoor lighting, where unexpected power failures could lead to significant inconvenience. -
Question:
How should I store Keeppower 16650 batteries when not in use?
Answer: To prolong the lifespan of Keeppower 16650 batteries, it is best to store them in a cool, dry place away from direct sunlight or heat sources. Ensure they are charged to about 40–60% capacity before storage to maintain optimal health. Proper storage conditions prevent degradation and enhance the performance of batteries when they are brought back into use, making this especially suitable for users who may not need frequent battery replacements, such as in emergency kits. -
Question:
What makes Keeppower batteries different from other brands?
Answer: Keeppower batteries distinguish themselves through advanced technology and rigorous quality control processes. They offer superior performance, including extended lifespan and reliability, compared to many alternatives on the market. Each Keeppower battery is designed to meet higher standards, making them a preferred option for those who rely on consistent power supply in demanding applications, from professional photographers to outdoor enthusiasts. -
Question:
What maintenance do Keeppower 16650 batteries require?
Answer: Keeppower 16650 batteries require minimal maintenance. Users should ensure the battery terminals are clean and free from corrosion. Additionally, regularly check the battery's state of charge and avoid extremes of heat or cold during storage. Maintaining proper usage guidelines ensures optimal performance and prolongs the lifespan of the battery, making it suitable for long-term applications in devices such as GPS units and high-performance tools. -
Question:
Where can I buy Keeppower 16650 2100mAh 3.7V Rechargeable Battery in Philippines?
Answer: You can purchase the Keeppower 16650 2100mAh rechargeable battery from Ubuy. This platform offers a wide selection of products and provides the convenience of ordering directly to your location in Philippines. With Ubuy, you can ensure a straightforward purchase process, making it easier to get your hands on this high-performance battery for your devices.
Nutritionist's Take
The Keeppower 16650 rechargeable battery is a power source and not a nutritional product, thus it does not provide any direct nutritional benefits. Nutritionists emphasize the importance of energy sources from food rather than batteries. While the product itself is beneficial for powering devices, ensuring sustainable energy supplies, it has no health claims or nutritional properties relevant to dietary needs. Potential drawbacks include environmental considerations associated with lithium-ion battery disposal and the need for proper recycling. Nutritionists would likely advise consumers to focus on whole food sources for energy rather than electrical energy, making this product neither a healthful choice nor a nutritional consideration.
Keeppower 3.7V Editorial Review
No editorial reviews found
Customer Reviews & Ratings
1 customers ratings
-
5 Star
0%
-
4 Star
100%
-
3 Star
0%
-
2 Star
0%
-
1 Star
0%
Review this product
Share your thoughts with other customers
Platform Trust & Buyer Confidence
MT
Mohd
Verified buyer
“The product received very good packaging & safe…Thank You”
16 June 2026 · via Trustpilot
SJ
Shawati
Verified buyer
“Accurate delivery timing given”
16 June 2026 · via Trustpilot
YB
Youcef
Verified buyer
“Not madly expensive like I thought, and much quicker than promised.”
15 June 2026 · via Trustpilot
LM
Leila
Verified buyer
“Never dealt with Ubuy before, but everything worked out great. Seamless cross border purchasing and shipping. Thanks!”
6/7/2026 · via Trustpilot
KA
Kwame
Verified buyer
“The process was smooth, with clear communication and timelines. This was my 1st purchase and I am really impressed. I will definitely be coming back.”
12 June 2026 · via Trustpilot
Secure Checkout
Global Delivery
Easy Returns
Genuine Products
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.
Currently unavailable.
We don't know when or if this item will be back in stock.
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.)
Secured transaction
PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.
Our Top Logistics Partners
Fastest cross-border delivery
Ubuy Assurance
Experience worry-free shopping with 100% original products, PCI DSS-compliant payment security, ISO 27001-certified data protection, the fastest cross-border delivery, free returns *, and secure packaging on every order.