Features: E-Bicycles FoldingE-Bikes ComfortBikes E-Trikes RecumbentTrikes Motorscooters Motorcyles AntiGravEV electricbikebattery,electricbicyclebattery,ebikebattery，electricmotorcycles， electricwheel，electricwheelchair，electricwheelbarrow,bafangmotorbattery Battery Model 51.820 Voltage 51.8V Capacity: 20AH Type: 3.7v 3C Samsung 2600mah 18650 cell Source Resistance 40 Charge Way of charge CC/CV Standard charge Current 2A Max charge current 5A Charge Cut-off Voltage 58.8V CellOvercharge protection Voltage 4.2V/CELL Discharge Continouns Discharge Current 30Amp Peak Discharge Current 100Amp Cell Overdischarge Voltage 2.8v/cell Discharge Cut-off Voltage 44.8V Cycle Life 1000 times Safety test No firs ,No explosion Overcharge Safety Test Crush Safety test Needling safety test 130 C high Temperature safety test Weight 6.0kg Size 70*170*280MM Fit moto power Less 1500w Working Temperature 0C—45C -20-C—65C Retention of charge >95% Certificate CE,UL,ROSH,UN38.3,MSDS Application E-bike,E-motorcycle,E-scooter Warranty One year Charger Parameters Applying Battery Type: Lithium Input Voltage (AC/V): 100 to240V Output Current (A): 2 A Output Voltage (DC/V): 58.8V Charging Mode: CC/CV Type of DC Output Connector: PLUG Applications: E-Bike, Electric Bike, E-Scooter, Electric Scooter ! (Suitable Wattage of Motor: from 250 Watt to 1500 Watt suggested.) Parts included: 1. 51.8V 20AHLithium Battery with PVC Case 2. Built-in BMS board 3. Charger (58.8V 2.0A 50/60HZ 100-240V ,US ,EU ,UK,AU,PLUG) Note :we have all kind of discharge connector ,please choose if you dont choose ,i send "C "style connector to you thanks Do not immerse the battery in water or seawater, and keep the battery in a cool dry surrounding if it stands by. Does not use or leave the battery near a heat source as fire or heater Use the battery charger specifically for that purpose when recharging. Do not reverse the position and negative terminals. Do not connect the battery electrodes to an electrical outlet. Do not discard the battery in fire or a heater. Do not short-circuit the battery by directly connecting the positive and negative terminals with metal objects. Do not transport or store the battery together with metal objects such as hairpins, necklaces, etc. Do not strike, trample or throw the battery. Do not directly solder the battery and pierce the battery with a nail or other sharp objects 1. Cells -A grade cellsto make sure batteries inhigh and full capacity 2. Protection -Dual IC chips, that can anti-short circuit, anti-over charger, anti-over current, anti-overload 3. Compose Type : Injection Technology tomake battery more stable. 4. Certifications : CE,UL,FCC, RoHS, ISO9001 5. Long life cycle, No memory, environment friendly. 1. High energy density 2. High working voltage for single battery cells 3. Pollution-free, environment friendly 4. Long cycle life; It extends its cycle life up to 800 cycles 5. Capacity, resistance, Voltage, platform time consistency is good 6. Simplifying battery management system (BMS) and a battery charger 7. With short-circuit production function, safe and reliable 8. Factory price & High quality 9. Fast charging 10. Light weight, small size 11. Large overcharge tolerance and safe performance 12. Self balance 1.Light electricvehicles: such as electric bicycle, golf car, small-scale electric flat car, forklift, cleanness car, electric wheelchairs 2. Large-scale electric vehicles: such as bus, electric car, tourist car and commix car 3. Electric tool: electric drill, electric saw, lawn mower 4. Remote control cars, boat, aircraft, toys, 5. Solar and wind power generation energy storage devices 6. UPS emergency lights, warning lights and miners lamp 8. Small medical equipment and portable equipment Widely used for Electric bicycle,golf car,electric wheelchair,power tools,scooter, UPS,Solar&Wind energy storage system,EV,etc Our BMS consists of Master BMS Circuitry (we named “BMU”), Slave BMS Circuitry (we integrate itinto our battery module) and contactor.Besides the basic functions such as over charge/ discharge,over current, short circuit, overtemperature and balancing, Our BMS owns the following features, 1. Master-Slave architecture makesthe system flexible; 2. Two level warning makes maintenance easier; 3. CAN2.0 and industrial level electronic components make system reliable; 4. Contactor makes high rate charge & discharge feasible; 5. Periodic insulation measurement makes personnel safety possible; 6. Host can control the system easily; experience We have more than 10years experience in producing Nicd&NiMH battery cell and pack,7years of experience to manufacture Lithum ionbattery,thefactorypassedISO 9001:2008 certification. Strict process management and control Each process for making battery wereunder strict managementand control,all of the battery wereunder full inspection before delivery. After-sales service Support prompt shipment and sample quality products,track the cargo in time after delivery.Morethanone year Guarantee,there are safety and operating instructions for your reference. •Quickresponsetoclients'enquirieswithin12hrs •Tailor-madesolutionprovidedbyourexperiencedteamandprofessionalengineers for lithium polymer battery •Morethan10yearsexperienceinproducingbatteryproductsforvariousapplication. •Valuequalityandlong-termcooperationtoreachwin-winrelationship. 1. We ship to Worldwide,except China,Hong Kong,and we do not ship to APO/FPO.etc 2. Items will shipped to 1-3 bussiness Days after payment received. 3. Items are shipped from China using DHL,UPS,FEDEX,TNT,EMS,reach most of the countries within 3 to 10 bussiness Days.Delivery time depends on destination and other factors, it may takes up to 10 bussiness days. 4. We ship to the buyer's Aliexpressaddress,your Aliexpress address must match your Shipping address. 5. Any custom duty or import tax are responsible for the Buyer. 1. 30 Days Refund , In order to return an item you must contact us to request a Return Merchandise Authorization Number (RMA). 2. We are not responsible for any kind of compatible issues, or problems related to any specific software or games. Please check our description carefully before purshing. If there is not anything wrong with our product or description, we wont bear the return shipping. 3.We checking all items before sending out, if you received an broken / defective item, please take photos and send to us immediately. We only accept those cases reported within 7 days. 4. Please keep all the package material , return items must be in good condition. 5. Buyer is responsible for all return shipping charges. We will responsible to pay the resend package. 1. We try to make sure you have a pleasant shopping experience with us, so that we could do more business with you. If there is any dissatisfaction, please email us before leaving any 1 or 2 ratings, negative feedback or open any ebay or paypal dispute. We will try our best to resolve the issues. Please give us the opportunity to resolve any problem. PS. you may contact us by 'Ask a question'. 2. If you are satisfied with our service, please leave us a 5 star positive feedback. Your recognition will make us more confident to develop business and serve you better. 3. If you have any problem,please contact us ,we will reply you in 24 hours. 
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