FOSSIBOT FB3840

The FOSSIBOT FB3840 is an additional battery with a capacity of 3840 Wh, designed to work with the FOSSIBOT F3600 Pro charging station. The LiFePO4 cells used ensure high durability and over 6,500 charge cycles down to 50% of initial capacity, translating to many years of use. The module allows you to expand the energy storage system up to 11,520 Wh by connecting two additional units. The FB3840 can also function as a portable DC power source thanks to its 100 W USB-C, 18 W USB-A, and additional 12V outputs, making it ideal for travel, mobile work, and emergency device power.

Greater capacity for longer device runtime

Connecting the FB3840 battery to the F3600 Pro station significantly extends the runtime of connected devices. One additional unit increases the system’s capacity to 7,680 Wh, while two expansion batteries allow for a total capacity of up to 11,520 Wh. This solution works well in RVs, at the cottage, while camping, or as a backup power source at home. Thanks to the high capacity, users can enjoy electronics, lighting, and everyday devices for longer without having to frequently recharge the entire system.

Wide selection of ports and convenient device power supply

The FB3840 is equipped with a set of practical DC ports that allow for direct powering of many devices without the need for additional adapters. Users have access to USB-C and USB-A ports, a 12V/10A cigarette lighter socket, a 12V/25A XT-60 output, and DC5521 ports. This allows the battery to power smartphones, laptops, LED lights, portable coolers, fans, and equipment used in motorhomes and RVs. The 100W USB-C port allows for fast charging of modern laptops and mobile devices, enhancing the comfort of working outside the home or office. Powering 230V AC devices is possible by connecting the battery to a compatible FOSSiBOT F3600 Pro station.

Robust construction and safe operation

The FB3840 is designed for regular use in various conditions. The housing features a clear LCD display showing the charge level and current operating parameters of the device. The built-in BMS system monitors the battery’s operation and protects it against overheating, overloading, overvoltage, short circuits, and over-discharge, which helps enhance safety during daily use. Despite its high capacity, the device remains portable, and comfortable handles facilitate transport. The ability to charge and discharge simultaneously further enhances the functionality of the entire power system.

Efficient power system with simultaneous operation and charging

The FOSSiBOT FB3840 supports simultaneous charging and discharging, allowing it to continuously power connected devices while recharging. A clear LCD display shows the charge level and input and output parameters in real time, making it easy to monitor the operation of the entire unit. The unit, measuring 60.9 × 32.1 × 47.5 cm and weighing 42 kg, is designed for stable operation both at home and during off-road use.

Included

• FOSSiBOT FB3840 battery
• Parallel connection cable
• Leather handle covers
• User manual

Svars

You can pay for goods in bm.market in the following ways: 

Credit card

credit card payment online

Legal entities / Self-employed persons (payment only by transfer):

Bank transfer - Payment is made on the previously received to your e-mail account. Upon receipt of the goods attached invoice and original invoice.

We will send your order by courier. The final cost of your order you will find out at registration.

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Procedure for returning goods and cash:

You have the right to withdraw from the purchase within 14 (fourteen) days without giving any reason.

The withdrawal period ends 14 days after the day on which you or a third party indicated by you, who is not the carrier, acquires physical possession of the goods.

To exercise the right of withdrawal, please inform us: SIA “TehEksperts”, Krasta Street 89, Riga, LV-1019, phone: 27725222, e-mail: [email protected] (you may submit the withdrawal form or a free-form notice).

During the withdrawal period, you are entitled to use the goods only for inspection purposes (as in a store): to view visually, to check size; not to carry out manipulations (including not removing protective films, not activating software/OS, etc.).

If you withdraw from the contract, we will reimburse the purchase amount paid within 14 days from the receipt of your notice. Additional delivery costs for more expensive services (express, delivery at a specific time, etc.) will not be refunded.

The goods must be returned to the bm.market store, Krasta Street 89, Riga, without undue delay and no later than 14 days after your notice. When receiving shipments by express mail/courier, we may record the visual condition and completeness of the goods; a copy of the inspection report will be sent to your e-mail. If you request us to arrange a courier, this is done by a responsible person of bm.market; courier costs will be deducted from the refund (the amount depends on the location in Latvia).

The direct costs of returning the goods are borne by the buyer, unless we have agreed in writing beforehand to cover them.

You are responsible for any decrease in the value of the goods if they are used in ways other than necessary for inspection. The decrease in value is reasonably documented by an inspection report and photo/video.

Indicative examples of value reduction:
– Packaging only opened, full set, undamaged
– Damaged packaging (torn/wet), product unused
– Missing accessories/documentation
– Light signs of use (removed films, micro scratches)
– Visible signs of use (scratches, stains, hours of operation)
– Irreversibly personalized/activated (software/licenses)
– Hygiene products, once opened (CM No.255, 22.5.), are non-returnable

The right of withdrawal does not apply in cases specified in Clause 22 of Cabinet Regulation No.255 of 20.05.2014, including:
· the price of the goods depends on fluctuations in the financial market;
· the goods are made according to consumer specifications or personalized;
· the goods are perishable or have a short shelf life;
· the goods, due to their properties, after delivery become inseparably mixed with other items;
· opened packaging of goods that, for health/hygiene reasons, cannot be returned.

Note: For legal entities and self-employed persons, the commercial warranty is 1 year, and the 14-day right of withdrawal does not apply.