Description
Products Description
Model |
P50b |
Rated Capacity |
5000mAh |
Nominal Voltage(V): |
3.7v |
Maximum discharging current |
60 A (Continuous) |
Maximum charging current |
25 A |
Chargeable |
Yes |
Cycle Life |
~500 cycles to about 80% capacity (typical, based on cycle characteristics graph) |
Weight |
0.072kg |
Dimensions (L*W*H) |
21*70mm |
Applications |
Suitable for high-power battery packs, electric vehicles (EV), power tools, UAV/drones, robotics, and energy storage systems requiring high discharge performance and low internal resistance. |
This one is new model INR21700 P50b
*All cells with brand new, warranty for 1 years.
*All cells will be matched (voltage, capacity, resistance) before delivery.
*All cells with brand new, warranty for 1 years.
*All cells will be matched (voltage, capacity, resistance) before delivery.

All Batteries will be tested many times before shipping, to make sure they are in top quality, with full capacity, matched voltage & internal resistance.
If you want a test report, just click here to contact us!



Application of common lipo battery capacity

1. High-Performance Electric Transportation: Electric scooters, E-bikes, light electric motorcycles, self-balancing vehicles, and
other applications requiring high-current startup and acceleration.
2. Power Tools / High-Power Equipment: Cordless drills, lawn mowers, chainsaws, and other handheld devices demanding high
instantaneous power.
3. RC Models & Drones / UAVs: FPV multirotor aircraft, remote-controlled cars, and other applications prioritizing high discharge
rates / high thrust.
4. UPS / High-Power Portable Power & Battery PACKs: Assembled into high-power battery packs for UPS systems, portable power
stations, high-capacity mobile power sources, etc.
other applications requiring high-current startup and acceleration.
2. Power Tools / High-Power Equipment: Cordless drills, lawn mowers, chainsaws, and other handheld devices demanding high
instantaneous power.
3. RC Models & Drones / UAVs: FPV multirotor aircraft, remote-controlled cars, and other applications prioritizing high discharge
rates / high thrust.
4. UPS / High-Power Portable Power & Battery PACKs: Assembled into high-power battery packs for UPS systems, portable power
stations, high-capacity mobile power sources, etc.
Our services
OEM / ODM service acceptable.
We can customize battery packs, battery sizes, and tabs according to your requirements. 100% guarantee the quality as you expected.

1.The material of the battery? 2.The space to install the battery? 3.What is the voltage of the battery? 4.What is the working current of the battery? 5.What is the capacity of the battery? 6.With or without protection circuit? 7.The cable type and length ? 8.What type of connector do you need ? 9.Need plastic case or not ? 10.What is the charging rate of the battery? |
Customizable Battery Packs
Customized voltage: 3.7v 7.4v 11.1V 14.8v 22.2v,etc Customized capacity: 2000mah-200ah,etc



Selection of High-Quality Battery Cells
* We collaborate with many top battery suppliers to provide you with A-grade battery cells.
* UL/IEC/UN38.3/CE/MSDS certified options

Custom Connectors
* Batteries with different terminals are always available, i.e. PC pins/tabs/solder tabs/leads/wires/cables and connectors.

High-Quality PCBA
* Industrial-grade protection circuits for safety & longevity
* Custom BMS integration with overcharge/over-discharge protection
* Optional smart monitoring & communication protocols
* Industrial-grade protection circuits for safety & longevity
* Custom BMS integration with overcharge/over-discharge protection
* Optional smart monitoring & communication protocols

Customer feedback

Recommend Products
Company Profile
Shenzhen Cowon Technology Co..Ltd. which was established in May, 2008, is one of the fullest range battery cells and battery packs company.
Cowon focus on manufacturing and design of lithium iron phosphate batteries, energy storage battery packs, portable power supplies, provide wide range of qualified lithium ion battery, lithium-ion polymer battery, and energy storage battery etc.include provide OEM&ODM Cylindrical/12V/24V/36V/48V Battery Pack service, These products are widely used in Electric Surfboards, Electric Bikes, the fields of home storage energy, RV energy, Boat energy, UPS, Tower Base Station, solar energy storage systems etc.


The battery cells of all Cowon battery pack are with high quality, including the Chinese top brands and imported branded battery cells from all of the world.






We have experienced R&D team and efficient and collaborative management team,Our factory is assessed, certified, authenticated and inspected by SGS Group. Do long-term business and reliable battery supplier.All of our batteries passed UL, CE, ROHS, CB, UN38.3, MSDS, IEC, ISO9001 and other international certifications.

FAQ
Q1:Is this Battery GRADE-A, Brand NEW?
A:It is Grade A, Brand new, the QR code is intact.
Q2:Can you test each battery PRIOR to shipping?
A:We will measure each battery‘s’ Voltage, Internal Resistance and Capacity before shipping.
Q3:Are the batteries come with bus bars and nuts?
A:This price come with Bus bars and Nuts, each Battery will offer 1 set Bus bar and Nuts (e.g., If buy 4pcs battery, we will send 4pcs cells with 4pcs bus bars and 8pcs nuts). If need extra more please contact us directly.
Q4:How about the Warranty?
A:We offer 5 years warranty for lifepo4 battery, and 3 years for Nmc battery. For damaged due to non-human factors, we will refund or send new battery for replacement after providing pictures or videos for evidence.
Q5:Will the package tough enough to protect the cells?
A:The Battery will be packed in good condition with the thicker PE Foam, then put into the 5 layers drop-resistant carton.
Q6:How to proceed an order for lithium ion battery?
A:We accept Alibaba trade assurance order online.Or you can provide your shipping information to us, we will make the online order for you.
Q7:How can I do if I need more help for the order?
A:You can chat our sales online or send inquiry email, our Sales Team will reply to you ASAP
Q8:Which shipping method you usually take?
A:Train/Sea DDP, Express, We can also ship with your own shipping agent.
Q2:Can you test each battery PRIOR to shipping?
A:We will measure each battery‘s’ Voltage, Internal Resistance and Capacity before shipping.
Q3:Are the batteries come with bus bars and nuts?
A:This price come with Bus bars and Nuts, each Battery will offer 1 set Bus bar and Nuts (e.g., If buy 4pcs battery, we will send 4pcs cells with 4pcs bus bars and 8pcs nuts). If need extra more please contact us directly.
Q4:How about the Warranty?
A:We offer 5 years warranty for lifepo4 battery, and 3 years for Nmc battery. For damaged due to non-human factors, we will refund or send new battery for replacement after providing pictures or videos for evidence.
Q5:Will the package tough enough to protect the cells?
A:The Battery will be packed in good condition with the thicker PE Foam, then put into the 5 layers drop-resistant carton.
Q6:How to proceed an order for lithium ion battery?
A:We accept Alibaba trade assurance order online.Or you can provide your shipping information to us, we will make the online order for you.
Q7:How can I do if I need more help for the order?
A:You can chat our sales online or send inquiry email, our Sales Team will reply to you ASAP
Q8:Which shipping method you usually take?
A:Train/Sea DDP, Express, We can also ship with your own shipping agent.