Downtube Type 24V 8Ah Electric Bike Li ion Dolphin Battery Pack 7S4P 250W 350W 24Volt Ebike Battery with Charger USB Port

• OEM order are welcome!!

• No lead, no heavy metal, no toxic element.

• Premium cells only.

• Capacity, Power, Voltage and Cell can be customized for Min. order 1PC.

• With key control function and USB discharge port.

• No memory effect, more than 1000 times cycle life.

• Excellent storage performance and low self-discharge.
• Easy to remove, portable.

24 Volt E-Bike Dolphin Downtube Battery 24V 8Ah Lithium Battery Pack Deep Cycle

• Applicable to DC motor, brush or brushless.

• Applicable to various motor brand, such as Bafang, Panasonic, Pacific, etc.

1. Emergency power supply, LED light & flashlight: headlamp, emergency light, solar flashlight, searchlight, lantern, bicycle light, bright flashlight, high-end lamp, military flashlight and so on.

2. Home appliance products: electric vacuum cleaner, eletric sweeper, water meter, gas meter, electrinc children toys, electric     warm shoes, electric blancket, TV remote control (RC) and so forth.
3. Consumer applications, communicate & telephone equipment: MPS, tablet PC, laptop, Bluetooth earphone, power bank,       portable DVD player, speaker, microphone, sound equipment, audio, digital camera and others
4. Outdoor sports products: camping light, mountain bike light, solar emergency light, self-defense flashlight and that .
5. Electronical tools & electric transportation vehicles: electric bike, electric car. e-scooter, electric motor and all that.
6. Solar lawm, remote control
7. Medical device
8. Backup power supply
9. UPS, GPS

1. WHICH BATTERY SHOULD I CHOOSE?

This really depends on the application and can be a hard question. The bigger (and more expensive) the battery is the longer your range....also the harder it is to fit in your bike. (space is an ebikers most valuable commodity.  Do your research if this is your first ebike kit to make sure you are getting the right battery for your needs.

2. WHAT CELLS ARE YOUR BATTERY PACKS MADE UP OF?

All our packs are made up of authentic Grade A battery cells. We use only premium cells to make battery with best BMS and best ingiredients.

3. WHAT IS A BMS

Battery management system. BMS is used to supervise battery by measure its voltage, temperature, current and SOC (State Of Charge), give out alarm under wrong circumstance, cut off electric power link in severe situation in order to protect battery and make its life longer. BMS can balance energy among batteries to make them more identical and expand its discharge cycle.

4. HOW MANY VOLTS SHOULD I CHOOSE?

Depending on your controller.   All 48v controllers can handle either 48v or 52v packs. If you have a 36 volt controller however you will need to upgrade it before you can run a 48 or 52v pack.

5. HOW MANY AMPS DO I NEED?

Also depending on your ebike controller. However in the case of amps its not bad to have too many. The controller will only take what it needs.

6. HOW MANY AMP HOURS DO I NEED?

The  more amp hours your battery has the more range you have. Also the larger and heavier (and more expensive) your pack will be. (read this story on calculating range)

Lithium batteries are presently the most commonly used energy storage devices on electric bike, electric scooter, golf car, mobile phones, laptops, digital cameras and other electric devices. Learning how to maintain lithium batteries can not only prolong battery lifetime but also protect your device from potential damage.

1. Charge new batteries. It's not necessary to charge over 12 hours when first used. When a device powered by batteries is purchased, sellers will usually tell us the batteries must first be charged 12 hours before using. Actually, this is unnecessary. Unlike common Ni-CD or Ni-MH batteries, most lithium ion batteries are activated before leaving the factory. Due to their low self-discharge, it’s unnecessary to charge lithium ion batteries for such a long time when new. Lithium ion batteries are ready for use when the charger indicates so, and they will reach their best capacity after 3 or 5 cycles.

2. Use appropriate chargers. Many people take great care with their electronic gadgets, but often neglect the consequences of bad chargers on their lithium ion batteries. When choosing a charger, the original charger is the best choice. If that's unavailable, a high quality charger that has an overcharge protection function, or a brand name charger will do. A low quality battery charger can lead to shorter run times, premature battery failure, or even fire or explosion.

3. Avoid frequently over charging. Over charging with a low quality charger may let the battery's interior rise to a high temperature, which is bad for the lithium ion battery and charger. Thus, simply fully charging is good enough - overcharging will make your lithium battery into a little bomb if overcharge protection function is missing.

4. Avoid touching metal contacts. All batteries' contacts need to be kept clean for best performance. When carrying batteries around, do not let the contacts touch metal objects such as keys; this could cause a short circuit, damaging the battery or potentially resulting in a fire or an explosion.

5. Avoid using often in high or low temperature environments. Lithium ion batteries have optimal working and storage temperatures. If they're continually used in extreme temperature environments, this will negatively affect battery use time and useful cycles.

WHY US?

NO.1: Manufacture expert with real factory in Li ion battery, LiFePO4, Li-NiCoMn, LiCoO2, LiNiO2, and LiMn2O4 battery          around 12 year experience.

NO 2: High quality and excellent performance(with CE, ROSH,UN38.3, MADS certificate)

NO.3: Professional engineers and sales team to provide you best solutions.

NO.4: 13 months warranty is covered. For any quality issue, customer can send for repair to our service center in                     France, Canada, China.

NO.5: Rich OEM / ODM experience. Test one by one before shipping.

1. Quick response to clients' enquiries within 24hours.

2. Best solution provided by our experienced team and professional engineers.

3. More than 10 years experience in producing battery products for various application.

4. Value quality and long-term cooperation to reach win-win relationship.

5. Our Partners thoughout 103 countries.

6. 365 companies used our products which are very satisfied.

7. 13 months warranty is covered. For any quality issue, you can send for repair to our service center in France, Canada, China.

1. FedEx/DHL/UPS/TNT for samples, Door-to-Door;