Trustfire 21700 4000mAh 3.6V - 3.7V PCB Protected Li-Ion Battery
Item number: 100817
Manufacturer: Trustfire
The first 21700 PCB protected battery from the price-performance winner Trustfire. Many times in the past Trustfire batteries have been dragged into the bad light by plagiarism and name similar brands. Nevertheless, Trustfire kept its name and developed into a torch manufacturer that can compete with the big known manufacturers. The industrial cells used for the construction of the batteries come mostly from premium manufacturers located in the Asian region whereby the costs could be drastically reduced.
Trustfire S21700C-4000mAh with integrated protection electronics.
Electronically (PCB) protected against over-voltage, under-voltage, short-circuit and reverse polarity. Fields of application: Torches, industry, LEDs and model making.
Please note the dimensions of the cell before buying! Due to the built-in electronics, the cell is not suitable for every application!
Height and diameter are larger than a standard 21700 cell without PCB.
| Capacity | 4030mAh |
| Minimum capacity | 4000mAh |
| Rated voltage | 3.6V - 3.7V |
| Charging end voltage | 4.25V ± 0.25V |
| Final discharge voltage | 2,75V |
| Charging current | 0.xxA - 2A |
| Protection | integrated PCB 12A |
| Positive pole | raised (button top) |
| Chemistry | LiNiCoAlO2 |
| Diameter | 21.70 mm ± 0.3 mm |
| Height | 75.40 mm ± 0.3 mm |
| Weight | 65±0,2 g |
| Charging method | CC-CV |
Safety instructions:
Please note that lithium cells may only be used by competent persons.
Incorrect handling or short-circuiting may result in fire or explosion.
Further properties:
Lithium-ion batteries are thermally stable and are not subject to memory effect.
They work on the basis of lithium and are characterised by a high energy density.
| Charging current standard | up to 2.00A |
| max. charging current | 1C 4A |
| Standby current | 1.0uA - 3.0uA |
| 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.
TrustFire Technology Co., Ltd.
Trustfire
Add: No.12 of Shouli Binhe Rd., Center of the Communities,
518116 Pingdi St., Longgang District, Shenzhen City, Guangdong Province
www.trustfire.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
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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
