30-Cell 18650 Battery Shell & PCB Protection Circuit Board Set

30-Cell 18650 Li-Ion Battery Housing & PCB Protection Circuit Board Set

This 1-set kit contains a 30-cell 18650 lithium battery shell combined with a PCB charging protection circuit board, designed for experienced technicians who repair, rebuild, or assemble custom battery packs compatible with Mak-style power tool chargers. Note: Battery cells and charger are NOT included — this is a component assembly set only.

Made in Mainland China.

Key Protection Features

• High-temperature & low-temperature protection — safeguards charging and discharging cycles across temperature extremes
• Externally adjustable temperature control — fine-tune parameters without opening the board
• Overcharge detection protection — prevents cells from being charged beyond safe voltage limits
• Over-discharge detection protection — cuts off output before cells drop to damaging voltage levels
• Three-stage overcurrent protection — staged response for light, moderate, and severe overcurrent events
• Adjustable overcurrent delay — first and second-stage delays are externally configurable
• Battery disconnection protection — alerts and disconnects when a cell is improperly connected
• NTC resistor disconnection protection — board shuts down if the temperature sensor is disconnected
• Short-circuit protection — immediate shutdown on short-circuit detection

Specifications

Assembly & Usage Precautions

This product is intended for individuals with hands-on experience in battery assembly and a thorough understanding of Li-Ion cell performance. Please follow all precautions below:

1. Double-check polarity when welding battery leads and sampling points — reversed connections may damage the circuit board.
2. The BMS (Battery Management System) board must NOT directly contact bare cell surfaces; ensure firm and reliable mechanical assembly.
3. All soldering equipment must be properly grounded; observe strict anti-static precautions to avoid damaging the protection board.
4. Keep lead wires, soldering irons, and other conductive tools away from PCB components during assembly.
5. Protect the board from static electricity, moisture, and water at all times during use and storage.
6. If there is no voltage output on first power-on after assembly, activate the pack using a dedicated compatible charger. Contact us if abnormalities persist.

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Frequently Asked Questions

Q: Does this 30-cell 18650 battery shell kit include batteries or a charger?

A: No — this set includes only the plastic/metal battery housing shell and the PCB charging protection circuit board. You will need to source your own 18650 Li-Ion cells and a compatible Mak-style charger separately.

Q: Who is this 18650 battery PCB protection board designed for?

A: This kit is intended for experienced battery technicians, electronics hobbyists, and DIY builders who are familiar with Li-Ion cell performance and have hands-on experience in battery pack assembly and welding. It is not recommended for beginners.

Q: What types of protection does the PCB circuit board provide?

A: The board includes overcharge protection, over-discharge protection, three-stage overcurrent protection, short-circuit protection, high/low temperature protection, battery disconnection protection, and NTC resistor disconnection protection — making it a comprehensive battery management solution for 30S Li-Ion packs.

Q: What are the dimensions of the battery shell housing?

A: The housing measures approximately 14.8 × 7.3 × 11 cm. Please note that slight variations may occur due to manual measurement. The color is black with a plastic and metal construction.