Efest IMR21700 - 4000mAh, Li-Ion battery, 3.6V - 3.7V 30A
Item number: 100683
Manufacturer: Efest
Due to more and more applications, the 21700 battery size is becoming a very popular cell and, as intended, is already replacing the 18650 batteries in many areas.
The high current cell is approved with a load of max. 30A constant and pulse load up to 45A.
4000mAh and 30A discharge current, Efest 21700 Li-Ion battery
High current cell designed for power tools, garden tools and high current drain applications.
Best suited for industry, model making, battery carriers, torches, drones etc.
The cell has been encapsulated by Efest with a durable heat shrink tubing and provided with necessary ratings to ensure more safety in use.
Product information about the 21700 rechargeable battery with 4000mAh from Efest.
| Capacity | 4000mAh |
| Minimum capacity | 3900mAh |
| Rated voltage | 3.6V - 3.7V |
| Charging end voltage | 4,2V ± 0,05 |
| Final discharge voltage | 2,5V |
| Max. discharge current (constant) | 30A |
| max. discharge current (pulse) | 45A |
| Protection electronics BMS | none |
| Positive pole | flat (Flat Top) |
| Diameter | 21.1 mm ± 0.15 mm |
| Height | 70.1 mm ± 0.2 mm |
| Weight | 69g ± 1 g |
| Charging method | CC-CV |
Safety instructions:
Lithium cells may only be operated with protective electronics!
Please note that lithium cells may only be used by authorised specialist personnel.
Incorrect handling or short-circuiting can lead to fire or explosion.
Further characteristics:
Lithium-ion batteries are thermally stable and are not subject to any memory effect.
They work on the basis of lithium and are characterised by a high energy density.
Scope of delivery:
1x Efest IMR21700 battery - 4000mAh, lithium-ion battery (The battery is delivered in an Efest paper box).
| Charging current normal/charging time | 0.xx - 2A |
| Max. charging current/charging time at 4A | up to 4A/3h |
| Operating temperature charging | 0 °C - 45 °C |
| Operating temperature discharging | -20 °C - 60 °C |
Notes:
A special charger is required for charging lithium-ion batteries, which charges the batteries according to a special charging procedure. (CCCV = constant current, constant voltage.) The batteries must not be charged above a voltage of 4.2 volts, otherwise there is a risk of fire and explosion. It is advantageous to charge the batteries only up to approx. 4.1 volts, as this significantly increases the service life or the number of charging cycles (possibly up to double). Only lithium ion chargers may be used for charging. However, the cheap chargers sometimes have the disadvantage that they do not switch off safely at the end of the charging process, but continue to charge the batteries with a small charging current, which can be dangerous.
Furthermore, rechargeable batteries and batteries do not belong in household waste! Please dispose of them as prescribed by law at the municipal collection points or in the [usually green] containers provided by retailers.
Shenzhen Fest Technology Co.,ltd
Efest
Floor 8, Building C, SAR 1980 Cultural Industry park, Minfu Road
Longhua new district, Shenzhen, Guangdong
https://efestpower.com/
Luxtrim GmbH
Magnolienweg 8
63741 Aschaffenburg
Deutschland
info@luxtrim.de
Product Inquiries
Questions about the product via email
If you have further questions about the product, please contact: info@akkuteile.de
We will respond to your email within 1 business day.
You can reach our support team Monday to Friday from 9:00 AM to 3:00 PM at 06021 - 9212263
Payment Methods
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Prepayment - Delivery within 1–3 business days after receipt of payment
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Invoice - Delivery within 1–3 business days
Credit Card - Delivery within 1–3 business days
Information:
As soon as the payment is successfully received, you will automatically receive a confirmation by email.
For non-EU countries, only the net prices of the respective items apply, without German VAT. Customs fees will be charged separately. Import taxes must be paid according to the respective country's regulations.
Unless otherwise specified in the product description, delivery within Germany takes place within 1–5 days, and international deliveries within 3–9 days after order confirmation (in the case of agreed prepayment, after receipt of payment). Please note that there are no deliveries on Sundays and public holidays. In case of self-collection, we will inform you by email when the goods are ready and available for pickup. In this case, no shipping costs will be charged.
Shipping and delivery Monday – Friday
