Product Description

Rechargeable 7.4V 2S 8800Ah Lithium Ion Battery Packs for back up
 
Product Advantages:
1) Green product
2) Long standby time
3) One year warranty
4) Excellent safety performance
5) Excellent storage performance and low self-discharge rate
6) Short circuit testing passed
7) Overcharge testing passed
8) Over discharge testing passed
9) 150C thermal shock test passed
10) 1.2m drop testing passed 
 
Spotlight: 

1. Provide both single cells and battery packs 
2.100% inspection before delivery 
3. Inspects inner resistance, discharge platform and self-discharge
4. IEC standard, capacity ranges from 120mAh to 200Ah
5. Manufacturer of 18650 lithium ion battery, lithium polymer battery etc.
6. Established quality control systems under ISO9001
7. Customized packs, tags, labels, plugs, connectors, over current protection, temperature cont8.l protection are available

Product application

Light: headlamp, emergency light, sloar flashlight, searchlight, lanten,bicycle light, LED light, military
flashlight, high-end flashlight, high power flashlight, bright flashlight.
2.Outdoor sports products: camping light, mountain bike light, solor emergency light, self-defense flashlight,
3.Customer electronics: MPS, Tablet PC. laptop, Bluetooth earphone, power bank, portable DVD player,
speaker, microphone, sound equipment, audio, Digital camera, vidican.
4.Home appliances products: electric mop, electric vacuum cleaner, electric children toys, electric shoes,
electric blanket.
5.Medical devices
6.Instruments and meters: water meter, gas meter.
7.Electric transportation vehicles: electric bike, electric car, e-scooter, electric motor, electric trolley, electric cart.
8.Power tools: electric drill, mower
9.UPS, backup energy, storage energy.
Walkie talkie, smart watch, headset, set top box, bluetooth speaker, beauty instrument, Miner' lamp, electric toy, emergency phone,

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 use Efest batteries with defective E-cig mods.
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: 7-10 days for sample, 15-20 workdays for large quantity.
 
6.Q: What kind of certificates could you provide for these batteries?
   A: We have UL,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.

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