1. Inbuilt Military Standard BMS: It has a built-in Multi-functional 120A continuous BMS, 360A for 30 sec peak, with high-quality IC and MosFET for over-current, over-discharge, over-charge, short-circuit, adverse-polarity connection, balancing functions. 2. Wide Applications: It can be used for solar energy 1
LiFePO4 batteries for solar storage: Cycle stability at high current, Fast charging within 1 hour, Deep discharge protection, overcharge protection, Voltage and temperature monitoring, Single cell monitoring, State of charge determination(SOC and SOH).
Li-ion Marine Batteries 12V 48V 240Ah: Light weight and strong power, sell to France and Russia and gain best praise, customers show it on their website to expand markets.
Item NO.:
KOK-LS-21700-4500mahBrand:
KOK POWERShare :
Product Item: KOK POWER Cyclindrical 21700 lithium ion battery 3.7V 4000Ah Rechargeable Lithium-ion Battery Cell
Main Feature: 21700 cylindrical cell, with greater power and energy density and lower impedance. This versatile lithium ion cell is suitable for a wide variety of applications and system designs. Proven performance in the toughest conditions, combining durability, reliability, and safety, the 4500mAh cell offers an excellent combination of price-performance.
Other Features
Specifications
|
No. |
Items |
Specifications |
|
1 |
Nominal Voltage |
3.7V |
|
2 |
Nominal Capacity |
4000mAh |
|
3 |
Standard Charge Current |
0.2C-0.5C |
|
4 |
Max. Charge Current |
1C (4A) |
|
5 |
Continuous Discharge Current |
3C (12A) |
|
6 |
Peak Discharge Current |
5C (20A) |
|
7 |
Charge Cut-off Voltage |
4.2V |
|
8 |
Discharge Cut-off Voltage |
2.75V |
|
9 |
Inner Resistance |
≤12.5 mΩ |
|
10 |
Weight |
69±2g |
|
11 |
Dimension |
Length: 70mm Diameter: 21mm |
|
12 |
Operating Temperature |
Charging: 0°C ~ 45°C Discharging: -20°C ~ 60°C |
|
13 |
Storage Temperature |
optimal store temperature of -20- 20°C for long term storage |
|
14 |
Life Cycle |
³800 times(100% DOD till 80% of initial capacity at 0.2C rate, IEC Standard) |
Benefits
Lithium Battery Packs made by 3.7v 21700 cells
1) Electric vehicles and charging stations, tourist coaches, yachts, wind and solar energy storage power, traffic signals
2) Solar hybrid street lighting, UPS power supply, home storage
3) Coal, disaster relief emergency, weather radar, electricity, smart grid, communication base stations
4) Hospitals, finance, telecommunications , system critical backup power systems
Pakage: OEM gift box. We can baranding OEM design for you
Come and get one. Email us, call us at 0086-755-2937 1122; or you can send us message below, we will reply you in time.
KOK POWER LIMITED (KOK), founded in 2011, is pioneer of smart lithium-ion battery systems in China. Our smart batteries can display & monitor the batteries status and thus enable the devices to conserve and use power intelligently with a patented built-in battery management system (BMS) via blue-tooth or other communications through APP or on screen.
KOK is strong in R&D and manufacturing of smart battery systems, widely used in fields such as E-mobility (e-bike, e-scooter, e-skateboard, e-motorcycle, e-tricycle/rickshaw, e-wheelchair, e-golf cart, e-forklift, e-tourist vehicle, RV/caravan,marine,etc.), Energy Storage Systems (solar/wind system, telecom/base station, uninterruptible power supply/UPS/backup system) and engine starter batteries. KOK batteries can readily replace the outdated, bulky and pollutant Lead-Acid / AGM/ GEL/SLA batteries with the latest smart lithium battery technology.
Following are our company production manufacturing
KOK staff, from senior management to direct operators, have over 8 years’ experience of building batteries for many applications.All assembling operators are trained to high standards;and our sales team are good communicators. We will work with you to find a custom power solution for your applications and will provide you with complete design, build and test solutions tailored to your specific needs.
KOK has been awarded as Hi-Tech Company of Guangdong Province, and products are designed to be safe, reliable and competitively priced. All our products are designed and manufactured to the highest standards and meet or exceed industry safety and environmental standards including: ISO9001, IEC62133, UL1642 / UL2054,CE,RoHS.
Our Vision:
Providing battery solutions to improve the global environment
Our Core Value:
Developing cutting-edge battery technologies and providing all-round customer support
Our Mission:
Transcending customers’ expectations, and boosting customers’ growth
Q:Do you have PI?
A:Yes,we will make a PI (Proforma lnvoice)for you
Q:When will you arrange shipment for us?
A:We will ship ASAP after we receive your payment
Q:How do we make the payment ?
A:We accept TT,Western Union.
Q:How would the goods be shipped?
A:We ship viaUPS , by Sea normally
Q:DO you keep products in your stock?
A:Yes ,we have large warehouse for goods.keep lots of goods in warehouse,so could promise fast delivery
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