DIY Kit 3S7P Li-ion battery, size as 12V7Ah, without accumulator

Product detailed description

Battery pack kit with dimensions of a 12V/7Ah lead acid battery. Includes holders for a total of 21pcs 18650 LiION cells, nickel-plated connecting strips and a module providing protection and balancing for 3x Li-Ion (Li-Pol) cells.

You'll also need the following for the build:

• 18650 Battery, for example GeB Li-Ion 18650 Battery 3000mAh 3.7V
• Spot welder.
• Wires to connect the power supply to the battery contacts.
• For completeness, it would be advisable to purchase an insulation strip to supplement the insulation on the top side.

BMS Specifications:

• Protections:
  • Short circuit protection
  • Overload protection
  • Overcharge protection
  • Discharge protection
  • Overcurrent protection
• Overvoltage range: 4.25 ± 0.05v
• Voltage overlap range: 2.5 ± 0.05v
• Quiescent current: less than 30uA
• Internal resistance: less than 100mΩ
• Maximum discharge current: 40A (in a well-ventilated environment)
• Maximum charging current: 20A
• Operating temperature: -40°C to 50°C
• Dimensions: 60x41x3.4mm

Included in delivery:

• 1pc blue case
• 2 pcs Holders
• 4 pcs nickel-plated tapes
• 1pc BMS module

Notes:

• This product is not a standalone functional unit and may require professional installation.
• Product images are for illustration purposes only and may sometimes differ from the actual appearance of the item. However, this does not change its basic properties.
• Batteries and connecting wires are not included.
• You should have some skills and knowledge of working with electronics and batteries beforehand, as handling Li-ion batteries can be dangerous if safety instructions are not followed. It is also important to follow the battery manufacturer's safety instructions and use the correct tools and protective equipment.
• You can only combine cells if all the cells are the same - same manufacturer, same type and ideally the same batch! All cells must also be charged to the same value. It is therefore recommended to fully charge each cell first and then select those cells in the assembly that will have the same voltage values.