DIY Bicycle Battery - Triangle Shape - TN10-21700 16s5p 60V 20Ah
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DIY Bicycle Battery - Triangle Shape - TN10-21700 16s5p 20Ah




Advantages of DIY Battery Assembly:



The Set Includes:
16S 5P PACK
A lithium-ion pack that serves as the main component for building the battery. After connecting the appropriate BMS, it is ready to use.


BMS
Battery management system (BMS) - It is a device that automates the entire process of battery usage. Once connected to the appropriate charger and BMS, it monitors the correct charging and discharging of the battery. It is an integral part of a properly built electric bike.
Lithium batteries (lithium-ion, lithium-polymer, and others) are serviceable and require care and attention. They should not be charged above 4.2V per cell or discharged below 3V per cell. To monitor them during everyday use, a device called a BMS (Battery Management System) was invented.
Accessories for Building a Bidon Battery:
- Red wire 12 AWG - 1 m
- Black wire 12 AWG - 1 m
- Red wire 16 AWG - 0.5 m
- Black wire 16 AWG - 0.6 m
- Epoxy glass, insulation, fiberglass - 12.5 mm x 12.5 mm
- Heat shrink tubes: thick (10 mm x 12 cm)
- Heat shrink tubes medium (6.4 mm x 12 cm)
- XT60 connectors - set
- Double-sided adhesive tape
- Kapton tape
- Spiral cable protector - 0.65 m


ENCLOSURE
The enclosure accommodates 80 21700 cells. It has a built-in power indicator.
The set also includes a mounting rail.
5V 3A Step-Down DC/DC Converter
This device steps down the voltage from the range of 9-90V to a stable 5V 3A output, ideal for powering electronic devices that require 5V, such as phone chargers.


Female XLR Charger Adapter
The female XLR adapter allows easy and reliable connection of a charger to devices equipped with an XLR socket, providing stable power supply.
GELBOX
The Gelbox is a protective cover for XT connectors, shielding them from water, dirt, dust, and moisture. It ensures the reliability of connections in harsh conditions, ideal for use in electric vehicles and outdoor devices.

Notes:

Not sure if the enclosure will fit into your bike frame? Download the templates and print them at a 1:1 scale. After printing, check if both marked dimensions of 50mm match the actual measurements. If not, the enclosure may have been printed at a different scale, and the dimensions won't match.
Download the battery template for fitting into the bike frame - Click here
Remember the correct order for connecting the charger to the batteries.Remember the correct order for connecting the charger to the batteries. DO NOT connect them in reverse. This could cause rapid damage to both the charger and the BMS installed in your battery. Reversing the connection triggers a sudden charge of the output capacitors in the charger through the BMS port. This results in a massive current flow that can damage the plug, socket, BMS mosfets, or even the charger transistors.
The actual capacity of the pack (available capacity) is always lower than the nominal capacity of the pack (nominal capacity of the cells within it). It is assumed that a finished battery pack will have approximately 10% less actual capacity than the theoretical nominal capacity. This is due to factors such as the reduction in cell capacity under load, and the unused capacity left by the BMS (discharging to the minimum cell voltage of about 2.7V), which is intended to prolong the battery life.
If your BMS has an enabling circuit (two white wires) and it is disconnected (wires are not shorted), you need to connect them (short the wires) to turn on the BMS.
Each battery in the nexun.pl online store is covered by a 24-month warranty for consumers and a 12-month warranty for companies.
The warranty covers:
- Cell damage
- BMS damage
- Capacity decline (over 15% per year)
The warranty does not cover:
- Errors in assembly that do not comply with the instructions or workmanship
- Improper maintenance
- Mechanical damage (cracked/broken casing, melted connection terminals, etc.)
- Changes in the product's operating characteristics depending on weather conditions (temperature)
- Water damage
To maximize battery life, use the following recommendations:
1. Fully charge the battery after each ride
2. Fully charge the battery every 3-4 weeks when you do not use it, e.g. winter break.
3. In the autumn and winter (temperature below +12*C), lithium-ion batteries have a lower capacity (by max. 30%) than in the summer, which results in a shorter range. This is normal. During this period, do not use the full power for the first 10-15 minutes of riding.
4. Do not charge the battery with a current higher than 3A.