Self-assembly battery for rear rack 48V 24,5Ah 1176Wh -115km
- The kit contains the elements necessary to build a bicycle battery mounted in a special bicycle rack. The package is welded on new EVE INR18650-35V 3500mAh cells.
In a set
Self-assembly battery for rear rack 48V 24,5Ah
A product for beginner users.
The package has marked fields for BMS mounting, which will make it very easy to finish the battery construction and have video instructions. The kit also includes all the necessary components for assembly (wires, tapes, etc.)
Universal silicone to immobilize the package and seal the housing
You do not know if the battery case will fit into your bicycle frame? Download the templates and print it in a 1:1 scale, after printing, check that both marked dimensions of 50mm are consistent with reality, otherwise the housing could be printed in a different scale and the dimensions will not match.
Download the battery template for the try-in on the bicycle frame - Click here
City kit
Trekking kit
Advantages of assembling the battery yourself:
You save up to PLN 400
You gain unique knowledge
You save in the future
The kit includes:
CELL PACKAGE 13S 7P
Lithium-ion package. It is the main element for building a battery. After soldering the correct BMS, it is ready to work.
Approximate range in summer at 25-27km/h and 50% motor assistance: 115 km
(Optional)
CHARGER 13S 3A 54,6V DC 2.1/5.5
Fast automatic charger for LiIon and LiPoly batteries (lithium-ion and lithium polymer). No configuration required, it works straight away. After the battery is charged, the charger switches to standby.
BATTERY FOR TEAR RACK REAR
The housing includes a 5.5 / 2.1 charging socket.
The kit also includes a rear rack.
BMS
Battery management system (BMS) - it is a device that automates the entire process of using batteries. After connecting a suitable charger to the BMS, it monitors its proper charging and discharging. It is an integral part of a properly constructed electric bike.
Lithium batteries (lithium ion, lithium polymer and others) are serviceable and require care and attention. They cannot be charged above 4.2V per cell and discharged below 3V per cell. In order to supervise them in everyday use, a device called BMS was invented.
ACCESSORIES FOR BATTERY BUILDING
- red wire 12 AWG - 1m
- black wire 12 AWG - 1m
- red wire 16 AWG - 0.5 m
- black wire 16 AWG - 0.6m
- epoxy glass, insulator - 12.5mm x 12.5mm
- thick thermo tube - 10.0mm 1 x 12cm
- medium thermo tube - 6.4mm 1 x 12cm
- xt60 connector set
- double-sided adhesive tape
- kapton tape
- spiral, cable cover - 0.65 m
- Wing nuts and mounting screws - 4 pcs.
ADDITIONAL ACCESSORIES FOR REAR RACK
Additional accessories include: mounting kit, keys and a set of mounting screws.
Welding
NEW CELLS
Package welded on new EVE INR18650-35V 3500mAh cells
Must see - E-bike Academy
See the video from the assembly of the battey performed by "Tas Tasowski". Find out how to build a battery yourself in the video below.
13s7p battery building rear rack instruction | E-bike Academy
Note:
Be sure to connect the charger to the batteries in the correct order. ALWAYS connect the charger to a 230V socket first and then to the charging socket. DO NOT connect upside down. This can quickly damage both the charger and the BMS installed in your battery. Reverse connection causes the effect of sudden charging of the output capacitors of the charger through the BMS socket. This is accompanied by the flow of huge current that can damage the plug, socket, BMS mosfets or even the charger transistors.
The real capacity of a package (available capacity) is always lower than the nominal capacity of a package (rated capacity of its cells). It is assumed that a ready battery based on a package will have about 10% lower real capacity than the theoretical rated capacity. It is caused by many factors, such as the decrease in the capacity of the cells under load, or leaving the unused capacity by the BMS (discharge to the minimum cell voltage to about 2.7V) in order to extend the life of the battery.
If your BMS has a turn-on circuit (two white wires) and it is disconnected (wires are not short-circuited) then it needs to be connected (short-circuited) to turn on the BMS.
