Audited Supplier
RSK-2421
Lithium-Ion Batteries
Car, Bus, UPS, Electric Power, Lighting, Electric Bicycle, Boat, Ebike, Escooter, Electric Mobility
24V
Medium Discharge Rate
Square Battery
Li(Nicomn)O2
Packaged
Chargeable
SANYO NCR18650ga
7s6p
250W
29.4V
4A
19V
20A
30A
500cycles
Approx 2.8kg
12months
Within 15 Workdays
UPS, DHL, FedEx, TNT, by Air, by Sea
CE, RoHS, MSDS, Un38.3
OEM
Standard Exporting Package
24V 21AH
Shenzhen
8507600090
Product Description
Product Description
Storage Li-ion 18650 Battery Pack 24V 21ah Power rechargeable lipo Lithium Polymer Ebike Battery
Specification:
Pictures:
Spotlight
1. Provide both single cells and battery packs
2.100% inspection before delivery
3. Inspects inner resistance, discharge platform and self-discharge
4. Capacity ranges from 120mAh to 200Ah
5. Manufacturer of 18650 lithium ion battery, lithium polymer battery etc.
6. Established quality control systems
7. Customized packs, tags, labels, plugs, connectors, over current protection, temperature cont8.l protection are available
Product advantage
1. High capacity, low inner resistance, long cycle life, low self-discharge .
2. Rapid charge-discharge cycle life up to more than 500 times.
3. Provide both single cells and battery packs.
4. Fast charge available.
5. Enough, stable capacity, steady discharge and high temperature discharge.
6. Customized sizes, packs, tags, labels, plugs, connectors, over current protection, temperature control protection is available
7. The batteries are applied to GPS,cordless phone, walkmans, solar lighting, electrical drills, shavers, emergency lighting and back-up power, robot etc.
Application:
Electric bicycle
Electric fat tire bike
Electric ATV
Electric scooter
Electric skateboard
Electric golf car
Electric balance car
Electric motorcycle
Electric wheelchair
Electric vehicles
Knowledge of battery maintenance:
1. Maintenance of new batteries
The necessary visual inspection should be carried out before the new battery is installed, and it can be used directly after the inspection is free of defects. The battery is mostly half-full before leaving the factory, and the battery has been aging, and there is no need to perform special activation again. Before charging a new battery, ensure that the charger matches the battery to avoid battery damage.
2. Instructions for fast charging
For non-fast-charge series batteries, it is not recommended to use fast-charge devices to quickly charge the batteries. Fast charging will make the material transfer produced by the internal electrochemical reaction of the battery fail to keep up with the charge transfer, and the electrode material will produce large irreversible changes and lose capacity.
3. Battery storage
When the battery is not stored for a long time, the battery should be charged to 50%-70%, and the storage temperature should be below 25ºC.
4. Battery charging
When using an electric vehicle charger to charge an electric vehicle, you should first connect the charger to the electric vehicle, and then connect the charger to the power supply. If the sequence is reversed, it will easily cause a short circuit. Keep ventilated when charging, and place the charger on non-flammable objects, as the flammable parts of the vehicle.
5. Daily maintenance
During normal use, avoid overcharging and overdischarging the battery. During use, if the battery life drops rapidly, you should find professional maintenance personnel to inspect the vehicle and the battery in time, and you must not disassemble the battery for inspection. When used at low temperatures, the problem of reduced range may occur, which is a normal phenomenon. Care should be taken to avoid extending the range by increasing the charging time. When using it under high temperature in summer, it is strictly forbidden to expose the battery to the sun, charge it, and charge it directly without heat dissipation after use.
Warnings:
Do not submerge the battery in the water.
Do not mix fresh batteries with used batteries.
Do not mix batteries with metal stuff together.
Do not insert batteries with the (+) and (-) reversed.
Do not disassemble, dispose in fire, heat or short circuit.
Do not put the battery in a charger or equipment with wrong terminals connected.
Shipping and Payment:
1. Shipping by UPS/FEDEX/DHL, by air, by sea and other special line for lithium batteries;
2. Accept T/T, PAYPAL, Western Union, Cash, or other available payment term.
How to order?
1. Please let us know what kind of model you need?
2. We make invoice for you.
3. Please check and confirm the invoice.
4. Once confirmed the order, please pay it soon.
5. After payment, all goods will be sent to you in 2 weeks.
FAQ:
If you can answer the following questions before place a order, it will be much helpful for us to make the correct products for you.
1. Will you use the battery on what product?
2. Do you need Protection Board for the battery?
3. Do you need cable and connector for the battery?
4. May I know your continuous and peak discharging current?
2.Q: How about you payment and delivery items?
A: Payment items: By T/T, 50% for deposit, and balance all before shipment. For small amount, we also accept full payment, payment via PayPal, Western Union.
3.Q.Can I have a sample order?
A: Yes, samples orders are welcome.We can offer free samples if the quantity not above 3 pcs, you only need to pay the shipping cost.
4. Q: How to solve the quality problems after sales?
(1) Take photos & videos of the problems and send to us.
(2) Send back the physical problem battery by express to us.
(3) Engineer will analyze the defective battery within 2 working day.
(4) 1 Year Warranty after leaving our factory, our defect rate is under 1%,we'll repaired or replaced the battery for free if non-human factor quality problems be confirmed.
5.Q: How's your lead time?
A: 3-5 days for sample, 7-10 workdays for large quantity.
6.Q: What kind of certificates could you provide for these batteries?
A: We have CE,CB,KC,MSDS,UN38.3 for most our current model, if It's custom-making design, usually no current certificates, we could apply for you if you need, but the related fees should be paid by your side, and if your order is big enough, certificate fees can be refunded.
7.Q: Can your factory print our logo/brand on the product?
A: Yes, and we will do this free of charge if the order quantity is big enough, please contact us for more details.
8.Q :Can you make customized battery?
A: Of course. We have professional engineers that can give you the most suitable solution according to your special requirements.
Storage Li-ion 18650 Battery Pack 24V 21ah Power rechargeable lipo Lithium Polymer Ebike Battery
Specification:
| Product name | 24V 21Ah |
| Model | RSK-2421 |
| Rated Capacity | 21Ah |
| Nominal Voltage | 24V |
| Over discharge protection voltage | 21V±0.05V |
| Over charge protection voltage | 29.4V±0.05V |
| AC Impedance New Cell Max.(mΩ) | ≤100 mΩ |
| Maximum Continuous Charge Current | ≤5A adjustment |
| Maximum Continuous Discharge Current | ≤20A adjustment |
| Maximum Pulse discharge current | ≤60A adjustment |
| Operation Temperature Range | Charge: 0~45°C,Discharge: -20~60°C |
| Storage Temperature Range | Less than 1 year: -20~25°C |
| Less than 3 months: -20~40°C | |
| Storage Temperature Range | Less than 30 Days: -25°C~45°C |
| Less than 90 Days: -25°C~30°C | |
| Weight | Approx2.8kg |
| Cycle Characteristic | 500-800times |
Pictures:
Spotlight
1. Provide both single cells and battery packs
2.100% inspection before delivery
3. Inspects inner resistance, discharge platform and self-discharge
4. Capacity ranges from 120mAh to 200Ah
5. Manufacturer of 18650 lithium ion battery, lithium polymer battery etc.
6. Established quality control systems
7. Customized packs, tags, labels, plugs, connectors, over current protection, temperature cont8.l protection are available
Product advantage
1. High capacity, low inner resistance, long cycle life, low self-discharge .
2. Rapid charge-discharge cycle life up to more than 500 times.
3. Provide both single cells and battery packs.
4. Fast charge available.
5. Enough, stable capacity, steady discharge and high temperature discharge.
6. Customized sizes, packs, tags, labels, plugs, connectors, over current protection, temperature control protection is available
7. The batteries are applied to GPS,cordless phone, walkmans, solar lighting, electrical drills, shavers, emergency lighting and back-up power, robot etc.
Application:
Electric bicycle
Electric fat tire bike
Electric ATV
Electric scooter
Electric skateboard
Electric golf car
Electric balance car
Electric motorcycle
Electric wheelchair
Electric vehicles
Knowledge of battery maintenance:
1. Maintenance of new batteries
The necessary visual inspection should be carried out before the new battery is installed, and it can be used directly after the inspection is free of defects. The battery is mostly half-full before leaving the factory, and the battery has been aging, and there is no need to perform special activation again. Before charging a new battery, ensure that the charger matches the battery to avoid battery damage.
2. Instructions for fast charging
For non-fast-charge series batteries, it is not recommended to use fast-charge devices to quickly charge the batteries. Fast charging will make the material transfer produced by the internal electrochemical reaction of the battery fail to keep up with the charge transfer, and the electrode material will produce large irreversible changes and lose capacity.
3. Battery storage
When the battery is not stored for a long time, the battery should be charged to 50%-70%, and the storage temperature should be below 25ºC.
4. Battery charging
When using an electric vehicle charger to charge an electric vehicle, you should first connect the charger to the electric vehicle, and then connect the charger to the power supply. If the sequence is reversed, it will easily cause a short circuit. Keep ventilated when charging, and place the charger on non-flammable objects, as the flammable parts of the vehicle.
5. Daily maintenance
During normal use, avoid overcharging and overdischarging the battery. During use, if the battery life drops rapidly, you should find professional maintenance personnel to inspect the vehicle and the battery in time, and you must not disassemble the battery for inspection. When used at low temperatures, the problem of reduced range may occur, which is a normal phenomenon. Care should be taken to avoid extending the range by increasing the charging time. When using it under high temperature in summer, it is strictly forbidden to expose the battery to the sun, charge it, and charge it directly without heat dissipation after use.
Warnings:
Do not submerge the battery in the water.
Do not mix fresh batteries with used batteries.
Do not mix batteries with metal stuff together.
Do not insert batteries with the (+) and (-) reversed.
Do not disassemble, dispose in fire, heat or short circuit.
Do not put the battery in a charger or equipment with wrong terminals connected.
Shipping and Payment:
1. Shipping by UPS/FEDEX/DHL, by air, by sea and other special line for lithium batteries;
2. Accept T/T, PAYPAL, Western Union, Cash, or other available payment term.
How to order?1. Please let us know what kind of model you need?
2. We make invoice for you.
3. Please check and confirm the invoice.
4. Once confirmed the order, please pay it soon.
5. After payment, all goods will be sent to you in 2 weeks.
FAQ:
If you can answer the following questions before place a order, it will be much helpful for us to make the correct products for you.
1. Will you use the battery on what product?
2. Do you need Protection Board for the battery?
3. Do you need cable and connector for the battery?
4. May I know your continuous and peak discharging current?
2.Q: How about you payment and delivery items?
A: Payment items: By T/T, 50% for deposit, and balance all before shipment. For small amount, we also accept full payment, payment via PayPal, Western Union.
3.Q.Can I have a sample order?
A: Yes, samples orders are welcome.We can offer free samples if the quantity not above 3 pcs, you only need to pay the shipping cost.
4. Q: How to solve the quality problems after sales?
(1) Take photos & videos of the problems and send to us.
(2) Send back the physical problem battery by express to us.
(3) Engineer will analyze the defective battery within 2 working day.
(4) 1 Year Warranty after leaving our factory, our defect rate is under 1%,we'll repaired or replaced the battery for free if non-human factor quality problems be confirmed.
5.Q: How's your lead time?
A: 3-5 days for sample, 7-10 workdays for large quantity.
6.Q: What kind of certificates could you provide for these batteries?
A: We have CE,CB,KC,MSDS,UN38.3 for most our current model, if It's custom-making design, usually no current certificates, we could apply for you if you need, but the related fees should be paid by your side, and if your order is big enough, certificate fees can be refunded.
7.Q: Can your factory print our logo/brand on the product?
A: Yes, and we will do this free of charge if the order quantity is big enough, please contact us for more details.
8.Q :Can you make customized battery?
A: Of course. We have professional engineers that can give you the most suitable solution according to your special requirements.
