Main ingredients:
1. Charger
Lithium Battery Charger: https://ban.ggood.vip/frly
2. BMS
Li-Ion Battery Protection Board: https://ban.ggood.vip/frmr
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3. Bartre Lithium ion 18650 from the former Laptop.
4. Conector
5. etc.

How to assemble.
1. Five pieces of battery in parallel
2. The parallel Batre is assembled in series as much as 13.
3. Install BMS. Starting from the black cord (-) Batre
4. Attach the connector to the short circuit.

This Battery can be used for E-Bike, Gokart, electric motorcycle and others. and Battery 48v 13s can travel a distance of approximately 20km.

Okay only this that I can share hopefully useful.