18650 48V Battery Lithium ion 8Ah

Additional information

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Product Details

Smart lithium ion battery pack BMS or PCM function: balance, overcharge, over-discharge, short circuit, transition, and over temperature. The product is used in the fire-fighting motor drive. The battery cell adopts 10C LG/HD2C/2100mAh/3.6V. Normal working current: 45A for 3 minutes. Maximum operating current can reach 84A

Build lithium battery pack features:

There is no doubt that the 18650 lithium battery has the characteristics of high specific energy, large volume, no memory and long life.

The capacity of an ordinary 18650 lithium battery is 1200mah, 1800mAh, 2000mAh, 2200mAh, 2500mAh, 2600mAh, 2900mAh, 3350mAh, 3500mAh, and the capacity of a lithium-ion battery composed of the series-parallel circuit can be greatly improved.

The 18650 rechargeable battery has no memory, so it is more convenient to use without having to discharge the remaining switching power supply before charging the battery.

What’s the BMS(battery management system) function?

  • Accurately estimate the state of charge of the power battery pack

    Accurately estimate the state of charge (SOC) of the power battery pack, that is, the remaining power of the battery, to ensure that the SOC is maintained within a reasonable range, to prevent damage to the battery due to overcharge or over-discharge, so as to predict the hybrid power at any time. How much energy is left in the car energy storage battery or the state of charge of the energy storage battery.

  • Dynamic monitoring of the working status of the power battery pack

    In the process of battery charging and discharging, the terminal voltage and temperature of each battery in the power battery pack, the charging and discharging current and the total voltage of the battery pack are collected in real time to prevent the battery from overcharging or overdischarging. At the same time, it can give the battery status in time, select the battery with problems, maintain the reliability and high efficiency of the entire battery group, and make it possible to realize the remaining power estimation model.

    In addition, it is necessary to establish the use history file of each battery to provide data for further optimization and development of new batteries, chargers, motors, etc., and to provide a basis for offline analysis of system failures.

  • Balance between cells

    That is to charge the single cells in a balanced manner, so that each battery in the battery pack reaches a balanced and consistent state. Equalization technology is a key technology of a battery energy management system that the world is currently researching and developing.

BMS Safety features:

  • Battery safety management: with reliable overcharge/over-discharge protection, overcurrent/overtemperature/low temperature protection, and multi-level fault diagnosis protection;
  • High-voltage safety management: with high-voltage relay adhesion detection, high-voltage interlock detection with high anti-interference, and advanced high-voltage insulation monitoring;
  • With voltage and temperature acquisition line disconnection diagnosis function;
  • The battery voltage acquisition module has safety mechanisms such as loop overcurrent and short circuit protection, and the circuit is more reliable;
  • With 5~36 series, 5~48 series integrated machine flexible configuration, suitable for all kinds of mainstream solutions in the industry;

FAQ of large lithium battery:

  1. Can you custom 18650 li-ion battery pack?

    Yes, we can custom different series and parallels based on customer demand.
  2. How long will you provide samples?

    7~15 days. We will do battery pack aging before delivering.
  3. What’s the MOQ?

    No MOQ limits. We can accept small orders.
  4. What’s the product warranty?

    1-year product warranty after batteries sent out.


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