Product Description
 

3S 4S 5S 6S polymer battery 16ah 20000mah 22000mah for RC UAV 
 

 
 Advantages: 

1.High Energy Density.
2. High Output Voltage.
3. Excellent Security.
4. Long Cycle Life: More than 500 repeated charge/discharge cycles.
5. Fast Charge Capacity: Can be fully charged in 2 to 3 hours with a rated voltage of 4.2 per cell
6. Environmental-friendly: No Pb, Cd added
7.Dual IC chips, that can anti-shortcircuit, anti-overcharger, anti-overcurrent, anti-overload;
8.Injection Technology to make battery more stable;
9.With short-circuit production function, safe and reliable;
10.Factory mastered technology and competitive price;
11.CE/ROSH/SGS/MSDS/UN38.3/IEC61233 standard.

 
Application:

RC toys
RC UAV
Rc drone
RC car
RC boat
RC truck
RC quadcopter
RC helicopter
RC airplane
RC racing vehicles
RC aircraft
RC sprayer etc.

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: 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 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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