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7.4V 4000mAh Battery Pack

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unit price: negotiable
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period for delivery: Consignment Deadline Days
area: Beijing
Expiry date : Long Effective
last update: 2019-12-27 09:58
view count: 58
Company Profile
Product details



1. Large capacity. 18650 lithium battery capacity is generally between 2000mAh - 2600mAh. 18650 lithium battery pack is casually can break through 5200mAh.

2. Long lifetime. Cycle life can reach more than 500 times.

3. High safety performance. No explosion, no combustion, no poison, no pollution.

4. High voltage. Nominal voltage is 7.4v, 8.4V after fully charged.

5. No memory effect. No need to discharge the remaining power before charging, easy to use.

6. Low internal resistance. Reduced the battery consumption greatly.


Solar power system, Notebook, walkie-talkie, instrumentation, audio equipment, aeromodelling, toys, cameras, digital cameras, LED light, electric tools , robot, GPS, radio, portable source, loudspeaker box, unmanned aerial vehicle, torch and other electronic equipment.

Battery storage environment should be clean, dry, ventilated room, should avoid contact with corrosive substances, should be far away from fire and heat source.

About US:

Shenzhen Richroc Electronic Co., Ltd. was founded in 2009, It is a specialized manufacturer of high quality batteries, battery packs, solar power system, mini ups and power bank. Our products are widely applied to digital battery, power battery, CCTV, smart home, alarm system ......

We own rich experiences to design, make the customized model. Meanwhile, all models could reach to RoHS, CE, FCC standard, owned specialized test center to fully make sure the quality level.

We pushing the managing idea of ‘Do it right at first time to satisfy our customers' to ensure the excellent quality. Our market have covered all over the world.


1. Q: How many cells are there in 7.4V 4000mAh batteries?

A: 4pcs 2000mAh 18650 li ion cells.

2. Q: What’s the assembly?

A: It’s 2S2P.

3. Q: Can I have higher capacity?

A: Yes, we have 4400mAh, 5200mAh, 6000mAh or higher.

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