KOK POWER, one of the World's Global Leader of Monitoring Smart Lithium Ion Batteries designed to replace lead acid, Gel and AGM Batteries.Creativity and innovation is deeply rooted in our company culture. We now develop the the world’s first starter battery with bluetooth transmission to display battery and vehicle status on APP. 10 years experienc in manufacturing virous batteries as follows LiFePO4 motorcycle starter batteries applicable in automotive & racing bikes Lithium solar powered batteries applicable in renewable energy systems and public street light Lithium RV/LEV batteries applicable in electric forklifts & pallet trucks, heavy duty & farm equipment, golf & electric vehicle, traffic management systems Lithium ebike and scooter batteries and Lithium titanate batteries All of our batteries are the upgrade and replacement of AGM, GEL& Lead batteries. We develops in the trends of new energy development, market and customers’needs. We specialise in lithium ion batteries for allows our batteries to be used for any application which require high quality, dependable and lightweight Batteries. We are here to make you know and try that Lithium batteries are undoubtedly a good choice for your electric vehicles, RV's, boats, cars to robots, telecommunications towers, military and unmanned aerial vehicles. More information, PLS click here to know Advantages of Lithium Ion Bttery What Matters is our batteries can achieve the “SMART” & “LCD Display” function. SMART, meaning the battery systems are fully compliant to the Smart Battery System Manager Specification （Revision 1.0  December 15 1998),  can provide whatever information is required by the application, such as, but not limited to voltage, temperature, current, state-of-charge, remaining capacity, full charge capacity, run rime to empty, remaining capacity alarms, remaining time alarms, charging current, charging voltage, battery Status, manufacturer information, serial number, device name, device chemistry, cycle life. Bluetooth Display： LCD Display: Data Displayed: Battery Pack Voltage Single Cell Voltage Current   State of Charge（SOC） Charge or Discharge State Cycle Temperature Remaining Capacity（RMC） Design Capacity（DCAP） Full charge Capacity（FCC ） Average Time To Empty（ATTE） Average Time To Full（ATTF） Serial Number（SN） Manufacturer Name Communication Frequency Manufacture Date Battery Curve

We are here to give you the sense of belonging, we are here to make win-win relationship,to get you know the latest battery markets. Follows are "Advantages of working with us” KOK POWER Battery-Private Labeling,Battery,BMS,Charger Customized We would like to work with you to develop the lithium batteries that you need. Whether your batteries need higher voltage, large capacity, patent or creative design, a particular look, for orders of 1000 on motorcycle batteries or more, 100 solar batteries, depending on what you need, we will work with you to custom lithium batteries that fit your needs and applications, or the needs of your customers. Contact us at 0086-755-2937 1122 or email us at market@kokpower.com to discuss your custom and OEM/ODM battery needs. Follows are you can get from KOK POWER Private Labeling If you need a particular look, color scheme, logo, label or screen printing on your batteries, we will try to satisfy you to get just the right look. Follows are the 12v 100ah Lithium ion Battery Pack we custom for one customer Battery Management System (BMS) Customized Optional We can work with you to design and source Battery Management Systems that will offer the exact protection that you and your customers expect. Why Need BMS? For Batteries, BMS is to protect each series of lithium battery when charging and discharging. Fully charged can ensure that voltage difference between the individual cells is less than the set value (usually ± 20mV). Achieving the battery charged in balance, which effectively improve charging efficiency in series. At the same time, the BMS detects whether the individual battery are in the situation of overvoltage, undervoltage, overcurrent, short circuit, over temperature to protect and extend the battery life. The undervoltage protection prevents each single cell from being damaged during discharging. Custom Battery Packs and Modules Whatever your needs, whether higher voltage or capacity, we're here to work with you to design battery packs and modules from the ground up. With 10 years experience, we have providing thousands of professional solutions for our customers form America, Philippines, South Korea, Thailand and so on, Follows are affirmations from many customers Battery Charger Custom If your battery need chargers ,we can design and sell it to you, beside, we can give you the best useful suggestion

In full compliance with ISO9001-2008 Quality Management System, we have strict process control of production from the in-flow of materials to the delivery of the finished products. We are fully conversant with UN transportation regulations for Lithium batteries .We have in-house equipment to test batteries according to UN transportation standards.  This ensures that we can meet all of the transport regulations for air, sea, road and rail freight. We work with you to determine the most efficient and reliable logistics solution for all stages of the supply chain, meeting your specific delivery needs, whilst ensuring compliance with all regulatory requirements.

Manufacturing Quality Standards KOK Power has been producing batteries since 2010. Almost decades of research and development invested in battery designs, giving us an edge over most other battery manufacturers around the world. Most of our battery modules sold are OEM/ODM manufactured in China. When you purchase our battery, you are investing your own projects and also the economy and jobs in China that support our local places; When you purchase our battery, you are buying the best quality,perfomence and service from the world. We believe our attention to detail and performance ensures that you are receiving proven technology that will maximize the return on your investment. We make sure to ship in 7 working days after cooperate with you. Safty in Production and Senior in Our Group From senior management to direct operators, we have over 8 years’ experience of building batteries for many applications.All assembling operators are trained to high standards, with understating and experience of li-ion batteries and the procedure of battery assembly. Our efficient and responsible sales representatives can provide you with the most suitable battery solution to your applications in a timely manner with good communication skills to ensure your satisfaction. Automated in-house test equipment, adaptable for each customer, that allows recording of data and analysis in real time to demonstrate that processes are in control.Automatic welding and laser welding are employed in the assembly process to ensure accuracy,fast speed and good control of tolerance. We make serious production process and test process. Battery Production Process 1.CELL SELECTION&GROUP Select and group the cells according to voltage,capaicty, inner resistance 2.CELL INSULATION PROCESSING Apply  insulaiton pad to the polarities of the cells 3 FIX CELLS IN BATTERY HOLDERS /GLUE  CELLS 4 TAILOR-MADE WELDING POSITION TOOL 5 AUTOMATIC WELDING 6 BMS CONNECTION 7 PRELIMINARY TEST 8 BATTERY PACKING 9 BATTERY AGING TEST Battery Test Process. 1 ALTITUDE SIMULATION simulating air transport under low-pressure conditions 2 TERMAL TEST assessing cell and battery seal integrity and internal electrical connections;conducted using rapid and extreme temperature changes 3 VIBRATION TEST simulating vibration during transport 4 SHOCK  TEST simulating possible impacts during transport 5 EXTERNAL SHORT CIRCUIT simulating  an external short circuit 6 IMPACT/CRUSH simulating mechanical abuse from an impact or crush that may result in an internal 7 OVERCHARGE evaluating the ability of a rechargeable battery to withstand an overcharge condition 8 FORCED DISCHARGE evaluating the ability of a rechargeable battery to withstand an overcharge condition

Common Faults and Handling Methods of Batteries Voltage Faults 1, high battery voltage: after full power and put it still, single string or a few strings of battery voltage are obviously higher, other monomer is normal The causes of the fault are: acquisition error; poor or ineffective LMU balance function ; low cell capacity ; the voltage rises rapidly when charging Handling methods: 1)If the single voltage display value is higher than the rest of the monomer, measuring the actual voltage value for comparison, if the actual value displays lower, but equal to other monomer voltage, then taking the actual value as the standard to calibrate the LMU single voltage; if the measured value is consistent with the display value, making the single battery balanced discharge artificially. 2)Check whether the voltage sampling line is broken; 3)replace LMU. ; 2, Low battery voltage : after full power and put it still, single string or a few strings of battery voltage are obviously lower, other monomer is normal The causes of the fault are: acquisition error; poor or ineffective LMU balance function ; the self-discharge rate of cell is large;  low cell capacity; the cell capacity is low and the voltage drops rapidly when discharging Handling method: 1)If the single voltage display value is lower than the rest of the monomer, measuring the actual voltage value for comparison, if the actual value displays higher, but equal to other monomer voltage, then taking the actual value as the standard to calibrate the LMU single voltage; if the measured value is consistent with the display value, making the single battery balanced discharge artificially. 2)Check whether the voltage sampling line is broken or  virtual connection 3)Replace LMU; 4)Replace the fault battery pack 3, pressure difference: dynamic pressure / static pressure difference, monomer voltage reach up to full power when charging, forbid the voltage jump; when stepping on the accelerator, the monomer voltage drops faster than other string; when braking, the monomer voltage rises faster than other string Faults reasons: bronze fastening nut that connecting  the battery loose; the connecting surface dirt; large cell self-discharge rate; welding mistake (resulting in low single cell capacity); certain single cell electrolyte leakage. Handling method: 1)Fastening the nut; 2)Removing debris on the connecting surface; 3)balancing the charging and discharging of the single string battery; 4)replacing the fault battery pack 4, voltage jump: when the vehicle is running or charging, the monomer voltage jump The cause of the failure is: the connection point of voltage acquisition line is loose; LUM fault Handling method: 1)Fastening the connecting points; 2)replacing LMU.; Temperature Failure 1, thermal management failure; Heating failure (heating plate); when the temperature is lower than a certain value, heating but not start the device when  charging Faults reason: heating device or BMU fault; heating plate or  supply circuit of heating device is abnormal Handling method: 1)repair or replace heating device or BMU; 2)check and repair power supply circuit Cooling Failure (fan); the fan doesn't work after the temperature is higher than a certain value Causes of failure: fan, relay or BMU fault; fan or relay power supply circuit abnormal Treatment method: repair or replace fan, relay or BMU fault; check whether the power supply circuit is abnormal 2, high temperature: one or more temperature points in the battery system are high, and reaching alarm threshold during operation or charging Fault reasons: temperature sensor fault; LMU fault; the electrical connection abnormal, local heating; the fan is not turned on, bad heat dissipation; close to the motor; overcharging Handling method: make comparison of measuring temperature sensor resistance value and the display value , if the actual value is lower than the displayed value, but equal to the temperature values, then taking actual value as the standard to calibrate the LMU temperature value; fastening electrical connection, clear debris of the connection point to; make sure the fan is open; isolate the thermal insulation materials and heat power; stop to operate, dissipate heat ;stop charging  immediately; replace LMU. 3, low temperature: one or more temperature points in the battery system are low, reaching the alarm threshold during operation or charging Causes of failure: temperature sensor failure; LMU fault; abnormal local heating film Handling method: making comparison of measuring temperature sensor resistance value and the display value, if the actual value is higher than displayed value, but equal to the temperature values, then taking the actual value as the standard to calibrate the LMU temperature value; the check and repair heating plate; replace LMU. ; Charging Fault 1, DC charging failure; GB/T 27930-2015 can not charge，charging jump, SOC is not reset after charging Failure causes: 1)Battery fault (voltage, temperature, insulation, etc.) 2)BMU malfunction (charging module or charging CAN exception) 3)Positive and negative charging device abnormal 4)CC1 resistance, CC2 voltage abnormal 5)PE abnormal Handling method: 1)Eliminate battery fault 2)Repairing / replacing defective parts 3)Delete the charging message and analyze the cause of the failure 2 AC charging fault; Failure causes:Battery fault (voltage, temperature, insulation, etc.);BMU malfunction (charging module or charging CAN exception);Positive and negative charging device abnormal;CC resistance, CP voltage abnormal;PE abnormal Handling process 1)Eliminate battery fault 2)Repairing / replacing defective parts 3)Delete the charging message and analyze the cause of the trouble Insulation Fault Fault reason: water inflow to battery box or plug-in device , cell leakage, environmental humidity, insulation false; other high voltage components (controller, compressor, etc.) insulation incomplete Handling process: 1)if the voltage or insulation resistance is less than the specified value, make sure the negative circuit leakage; 2)2)if the voltage or insulation resistance is less than the specified value, make sure the positive circuit leakage. According to the size of the leakage voltage divided by the single string voltage, then we can be calculated leakage point, analyse the problems according to the different situation then. Communication Failure LUM communication failure, BMU communication failure; the whole vehicle displays one or several LMU information, no BMS information Failure reasons: LMU/BMU fault;  poor contact of LMU/BMU power supply circuit or communication line / fault; signal interference Processing methods: (1) replacing LMU/BMU; checking and repairing power supply circuit / communication line; checking shielding, inspecting line, searching and removing interference source Flexibility We have the flexibility to scale production to meet your custom demands. This allows us to come up with a business model that suits various customer needs.Our uncompromising quality standards and short processing times have made us the manufacturing partner of choice for leading OEMs. Our completed and powerful supply chain enables us to provide various types of lithium-ion (LFP, NMC, LTO) cells to build battery packs according to your specific needs. Items LFP or Lithium Ferrous Phosphate battery NMC or Lithium Nickel Manganese Cobalt Oxid,lithium-manganese-cobalt-oxide battery LTO or Lithium Titanate battery Chemistry LiFePO4 Li（NiCoMn）O2 Li4Ti5O12 Specific Capacity (mAh/g) 130 160-190 155-165 Nominal Voltage (V) 3.2-3.3 3.6-3.7 2.4-2.5 Cycle Life (DOD to 80%) ＞2000 ＞1000 ＞6000 High Temperature (℃) ～７５ ～６５ ～６５ Low Temperature (℃) -20 -30 -40 Energy Density（wh/L） ~160 ~320 ~130 Specific Energy (Wh/Kg) ~130 ~200 ~65 Cost High Low Highest Comprehensive Performance Excellent Excellent Excellent

KOK Power Limited boasts a strong and vigorous R&D team of 12 battery experts, consisting of electrical engineers, structural engineers, software engineers and technicians. OEM Design & Prototyping We will work with you to find a custom power solution for your applications and will provide you with complete design of 3D drawing, build and test solutions tailored to your specific needs. In-house tool-room facilitates the rapid development of prototypes, jigs and fixtures, ensuring that we meet your timescales and help your get products to market faster. Quality & Commitment At KOK POWER, we are all about quality.  Quality manufacturing, quality processes, and quality people for one thing- Providing the best batteries for our customers around and world. At KOK POWER, we are all about commitment. Everything we do is for the customer’s consideration. From developing the product innovatively, to the raw materials we use, to the manufacturing processes, to the people sell and provide the  service support…at KOK, you’ll find we are dedicated to serve the customers who rely on our products and trust in the reliability. Corporate-wide attitude is rooted in our company.