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BMS 13s LiPo/LiIon - 30A/8A

BMS 13s LiPo/LiIon - 30A/8A

  • Application: 13s battery, LiPo / LiIon 48V, Maximum continuous discharge current: 30A, Maximum charging current: 8A
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BMS 13s LiPo/LiIon - 30A/8A

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.

TASKS PERFORMED BY BMS:

BMS has a higher standard of resistance to moisture and water. It is not 100% waterproof, the balancing joints are still exposed, but it will show higher resistance to, for example, moisture condensing in a (especially metal) box.

Technical data:

PARAMETER UNIT
Application: 13s battery, LiPo / LiIon 48V
Maximum continuous discharge current: 30A
Maximum charging current: 8A
Balancing mode: above 4.22V, ending 4.16V
Minimum voltage per section: 2.65V
Balancing current: 25mA
Dimensions: 80x62x12mm

Cabling is included with the BMS.

Connection description:

-B: We connect the MINUS from the battery to this field

-C: We connect the MINUS from the charger to this field

-P: We connect the MINUS from the controller to this field

Temperature sensor - when inserted between the cells, it protects the battery against overheating.

Balancing Connector:

BC0 (from the right) is the first cell from the battery MINUS - black wire in the balancing harness

BC1 (from the right) is the first PLUS cell and the second MINUS

...

BC5 (right) is the 5th PLUS cell and the 6th MINUS

...

BC9 ninth cell PLUS

...

BC13 (Last tag with the largest number) - Last battery cell (i.e. FIRST from plus)

Notes and Tips:

For proper operation, BMS requires an appropriate charger compatible with the battery operating voltage.

We recommend BMS assembly by people familiar with the subject of electronics / power. We suggest checking the correctness of connections 3x before the final start-up.

In an installation with a BMS, overcurrent circuit breakers, fuses and soft starters are not used. The BMS is not disconnected from the battery, it remains connected all the time.

The most common problems when connecting a BMS are confused and incorrectly soldered connectors to the cells: always check the connections 5x before connecting everything to the BMS. Draw everything on a piece of paper. Use a meter / multimeter. If in doubt, contact our technical department and study the connection diagram and descriptions available on the web.

The correct sequence of connecting the BMS:

1. Connect the battery cable (MINUS) to the appropriate field in the BMS -B

2. Connect the cable from the controller (MINUS) to the appropriate -C field

3. Connect the cable from the charger (MINUS) to the appropriate -C field

4. Connect the PLUS wires of the controller, battery and charger (it may spark slightly - this is normal)

5. Finally, connect the balancer cables to the balancer connector (make sure they are soldered in the correct order beforehand)

6. After completing the installation, connect the charger for a moment to activate and unlock the BMS at its first start-up.

You should avoid assembling the BMS cables in a different order, it may end up damaging them.

An exemplary connection diagram depending on the number of sections:

Click to enlarge the photo

BMS 16s LiPo/LiIon - 30A/8A
24 months for consumers, 12 months for companies

The store guarantees repair or replacement of equipment for up to 24 months for consumers and 12 months for companies from the date of purchase. Complete the complaint form available on the store's website.

 

What is not covered by the warranty?

- Errors in installation or maintenance
- Thermal damage (overheating)
- Modification/interference in the device casing
- Modifications/changes inside the device
- Mechanical damage caused by incorrect use of the product. e.g. damage from falls, excessive mechanical loads

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