For the choice of batteries, FIVE relies on the best available technologies on the market and the best brands in the industry.
Batteries are selected based on high standards of technology, long-life and quality, ensuring maximum performance.
Electric bicycle have the currently more advanced Lithium-Ion batteries, equipped with Samsung, LG and Sanyo cells to guarantee higher quality, safety and long service life thanks to several charging cycles: up to 1,000 full cycles. Lithium-Ion batteries are based on advanced technology that makes them small and light, generating a reduced weight for the same capacity, or a greater capacity for the same weight. The result is really an increase in the bike's range. FIVE Lithium-Ion batteries are handy and quickly removable. They can be recharged at any time and do not suffer from memory effect while maintaining high performance. Moreover, during the charging process, they provide 95% energy efficiency.
Batteries comply with UN38.3 regulation, which includes several tests (altitude, thermal, vibration, impact, overload, etc.), many of which are essential for safety. Passing the tests UN38.3, is the mandatory requirement to market the batteries individually and separately from the e-bikes. This allows Customers to choose batteries with different capacities, suitable for their travel needs. The Customer has also the guarantee of purchasing them later as spare parts, when old batteries are exhausted.
Simulates air transport with low pressure conditions. The batteries are tested for at least 6 hours under the following conditions: temperature of 20 °C + -5 °C; pressure of 0.116 bar or less.
Simulates rapid and extreme temperature changes to verify the integrity of the electrical circuits, connections and the battery itself. The batteries are tested for at least 6 hours under the following conditions: temperature of 75 °C + -2 °C. Within a maximum time of 30 min., the test is repeated under a temperature of -40 °C + -2 °C. The test is repeated 10 times.
Simulates different vibrations typical of a transport. The battery is subjected to a vibration ranging from 7Hz to 200Hz continuously for 15 minutes. The cycle is repeated 12 times for a total of 3 hours.
Simulates possible impact during transport. The battery is subjected to a 150 g acceleration of 6 ms.
Simulates a short circuit from the outside. The battery, located in a 55 °C environment, is subjected to a short circuit with a maximum resistance of 1 ohm for one hour. After the test is over, the battery is kept under obervation for 6 hours.
Simulates the impact with a certain mass. The battery is subjected to impact on a 15.8 mm diameter bar with a weight of 9.1 kg which, placed at 61 cm high in relation to it, is dropped to the center of the sample.
Evaluates how the battery reacts to an overload. The battery is electrically charged with a double current flow compared to the max. current reported by the manufacturer.
The complex field of the electric motors sees FIVE undertaking the study of different solutions, taking into account some of the essential basis in the construction and assembly of such devices: electric motor position, mode of assistance, type of charging, integration into the bicycle frame.
Electric bicycles made by FIVE are configured with front engine, rear engine and central engine, since there is not only one type of electric bike. As a matter of fact, e-bikes replicate the categories into which the traditional bicycle world is divided: therefore we have citybike, MTB, full suspended.
Also called Front Hub Motor, this engine is built-in inside the front wheel hub. An easy solution that allows a perfect balance of the electric bike's weights, suitable for urban routes. Together with a speed sensor, the feeling is that of a soft and effortless pedaling.
Also called Rear Hub Motor, this engine is built-in inside the rear hub. The feeling is that of a natural propulsion from the back of the electric bike effortlessly, thanks to the use of the speed sensor. Particularly suitable for urban biking or trekking.
Also called Central Hub Motor. It is a configuration that, coupled with a torque sensor, allow to supply energy in proportion to the effort imposed on the pedal by the user. It is a suitable solution for mtb or trekking electric bikes.