- Model NO.: BLV-4821
- Capability: 21000mAh
- Terminal Conection Line: DC Jack DC Connection Line
- Short Detection Delay Time: 100-600us
- Transport Package: High Quality Carton Box
- HS Code: 8507600090
- Type: Battery
- Input Voltage: 48V
- Over Discharge Current: 25A
- Trademark: BLV
- Origin: China
This battery can use for 48V 100W---1000W electric bicycle motor
1.48V Â 21ah Lithium Battery with aluminiumcase
2. 15A Maximum Continuous Discharge Current Built-in BMS board
3.54.6V 2A Charger (With EU/US/UK/AU AC Charger plug you can choose )
4. Double key,discharge wire
Battery Model:48V 21Ah
Nominal Capacity (AH) :21AH
Nominal Voltage (V):48V
Cell Source Resistance (mÎ©) :Less 40mÎ©
Cell Specification :3.7V 2.6AH 18650 Â samsung Â cell
Cell Combination :13-series
Discharge Cutoff Voltage (V) :38+-1V
Charge Cutoff Voltage (V) :54.6V
Rated Discharge Current (A): 15A
Maximum peak discharge current (A): 45A
Maximum Continuous Discharge Current (A) :15A
Charger mode:CC/CV(Constant Current Constant Voltage)
Standard Charge Current (A) :2A
Charge Time under Standard Charge Current :9h
Fast Charge Current (A):5A
Charge Time under Fast Charge Current:4h
Charge Temperature Range :0-45Â°C
Discharge Temperature Range:-20-65Â°C
Life cycle:more than 1000 cycles
Battery Size :370*150*80MM
Battery Weight:About 8kgs
Chemical: Li-Ion NiCoMn.
Lithium Ion Charger Specification:
1. AC Input Voltage: 100-240V.
2. Charge Voltage:54.6Volts.
3. Charge Current: 2Amps.
4. AC Charger Plug: European/American /UK /Australia Standard you can choose.
Â·Electric Vehicles, such as E-bike, E-scooters
Â·Electric boats, such as trolling fishing boat
Â·Robots for industries and military
Â·Remote data transfer system
Â·Satellite communication station
Â·Power tools, such as drilling, cutting and polishing tools
Â·Power supplier for Training systems, such as Torpedo Trainer
1. Life expectancy is two times that of lead-acid batteries.The weight is more lighter.
2. No memory effect and rechargeable.the battery pack life is more longer.
3. Safer and more environmentally friendly,No heavy metals and hazardoussubstances.environment friendly.
4. Built-in BMS system will prevent battery pack over-charge, over-discharge, over-current, over-heat, short circuit.
5. Before send out,Over-discharging test/ Over-charging test/Short Circuit Safety Test/Extrusion Safety Test.
6. Use high quality 5C-5C Discharge Rate 18650 Power battery Cell.The customer also can Customized Imported battery cell.
7. Up to 1 years warranty.
1.Fast speed:It can support most 1000W Power2.High voltage:Use 13 series cells, it can reach to 54.6when full charged.
3.Long life cycle:It is the double life cycle of lead-acid battery life normally it can use 2-5 years.
4.With BMS protection:Prevent:Over charge,over discharge,over hot over voltage ,over voltage,short circuit.......
5.Easy Install:Easily install into many kinds ofequipments.
6.With aluminium case:More stronger,Protect the battery from damage.
1.High invert efficiency and rapid start;
2.Great physical performance;
3.Low self-discharge rate;
5.Professional Li-battery customization.
1-Use aÂ specified charger,Fully charge the battery before first-time using.
2-Do not disassemble the battery and battery pack in any way.
3-Do not short circuit battery terminals,don't not reverse the positive and negative pole
4Do not throw the battery into fire or heat, do not put the battery into microwave oven or pressureÂ Â vessel.
5-Do not immerse battery in water or allow it to get wet!
6-If the battery leaks or releases strange odor, pls remove it from place near fire place immediately.
7-Keep the battery in aÂ cool dry surroundings if it stands by.
8-Do not place or storage this product under high temperature(or fire) or humid environment.
9-Using the product, aÂ little hot is normal.
10-Stay away from children when charging or in storage.
|FAQ: any questions, contract us freely, respond within 12hÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â|
|Q1:Can't charge the battery?|
|A1: First we nee to connect the battery charger, second we have to turn this switch on,and then can be charged.|
|Q2:Is it the capacity of your battery real?|
|A2: All of our batteries are real full capacity with top quantity, competitive price& long life cycle.|
|Q3:How about the lead time?|
|A3:Delivery time for production will depend on your quantity.Usually it will take 7-15 working days, the sample will be shipped out within 4Â working days.|
|Q4:Which certificates do you have?|
|A4:We have CE/ROHS/UN38.3/MSDS for lithium-ion cell used, all reach international standard|
|Q5:How about warranty?|
|A5:1 year warranty|
|Q6: payment and samples|
|A6:we accept paypal for samples order, larger order with T/T|
|Q7:Â Â Charging temperature|
|A7:The cell shall be charged within 0Â°C~40Â°C range in the Product Specification datasheet, for all samples&orders|
offer test report& tech specification data sheet
|Q8: Operating temperature|
|Â Q9: Company production capacity:|
|A9:200k pcs per months|
|Q10:What's the batteries applications?|
|A10:Widely applied in digital products, portable computers, Bluetooth products, electric tools,power tools, lighting devices like LED lights and emergency lights,electric toy, household appliances and emergency device area. cordless phone, power tools, instrument and apparatus, electric vehicle,electric bikes, motorcycles,UPS battery,medical equipment,beauty instruments,electric trolley,solar power system.solar energy storage,smart robot and so on.|
|Shenzhen Believe Technology Co., Ltd :advanced power solution for the green world|
1.Door to door services by courier.By TNT,FEDEX, UPS, DHL,etc to all countries.
2.By air or sea through your pointed forwarder is the normal way we do.
3.We can also find the cheapest forwarder to ship goods to your pointed port.
Inner Package: High Quality Carton Box.
Outer Package: High Quality Carton Box.
48V 21ah 1000W Ebike/Rack/Rear/Luggage/Lithium Battery with BMS Send a 54.6V 2A Charger in China with Stock
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