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Lithium-ion battery pack 37V 18650 4000mAh

Model number: 37V 18650 4000mAh

Nominal voltage: 37V

Nominal capacity: 4000mAh


Warranty: 1year


Battery specification: 18650-10S2P-4000mAh-37V

Nominal voltage: 37V

Nominal capacity: 4000mAh

Cut-off Charging voltage: 42V

Charging current: ≤4000mA

Standard discharging current: 4000mA

Cut-off discharge voltage: 30.0V

Internal resistance: ≤250mΩ

Charging temperature: 0~45℃

Discharging temperature: -20~60 ℃

Storage temperature: -20℃~35℃

Application field: Skateboard, Hoverboard, Military product, Balanced twist car, E-cigarette, Muti car jump starter, power bank, Auto cleaner, Torch, Flashlight, emergency lighting, laptop, solar board, ups power, smart phone, wireless microphone, MP3, Walk man, Cordless Phone, Notebook, Video Camera, Digital Camera, Digital Products, Portable DVD, Mobile Communication, Electronic Toys, Game Player, Solar LED light, Power tools, Light, E-bike, Medical Equipment, etc.

Main advantages:

● Extremely safe, low self-discharge and high consistency performance

● The battery has as long as 500cyle life. The capacity retention is about 70% after 500cycles.

● Wide operation temperature: -20ºC~+60ºC

● Reliable PCM system to protect the battery from over-charge and over-discharge.

Other keywords:

Lithium ion battery pack, lithium-ion battery pack, li ion battery pack, 18650 battery pack, customized lithium battery pack, li-ion battery pack


Q1: Do you accept customized?

A: Yes, we are professional customized lithium battery provider. Share us voltage vs capacity vs dimension you want.

Q2: When can you deliver products?

A:We can deliver in 10-12 working days if there is stock. For customized battery, it may takes longer.

Q3: Could you offer free sample to test?

A: In general, we offer it for new customer after they pay the sample fee, and we will refund the sample cost for them when massive order is confirmed..

Q4: How about the shipping?

A: We have some good cooperated forwarder who have much experience in shipping batteries. You could also use your own forwarder. It could be door to door express, by air or by sea.

Q5: How do you assure the quality?

A: There are at least five steps quality control reflected in R&D process, incoming control process, production process, prior-shipment control and after-sales service process. The company has more than 40 strictly trained personnel and advanced detection equipment to ensure the company products quality in the leading position in battery industry.

Technical Support: