BMS BOARD 3.7V 14500 LITHIUM BATTERY PROTECTION WITH SOLDER BELT

BMS BOARD 3.7V 14500 LITHIUM BATTERY PROTECTION WITH SOLDER BELT

• Battery type: 14500 lithium-ion (same size as AA, 14mm diameter × 50mm length).
• Nominal voltage: 3.7V (full charge up to 4.2V, discharge down to ~2.5V).
• Protection function (BMS board):
• Overcharge protection (cuts off charging above 4.25V ±0.05V).
• Over-discharge protection (cuts off below 2.5V ±0.05V).
• Overcurrent/short-circuit protection (prevents damage during high load or short).
• Balancing (not needed for single-cell, only multi-cell packs).
• Solder belt (tabs):
• Nickel strips spot-welded to the battery and connected to the BMS board.
• Makes it easy to integrate into battery packs or circuits without direct soldering to the cell body (which is risky).

👉 This type of 3.7V lithium battery protection board with solder belt is commonly used in:

• Rechargeable torches and LED lights
• Small DIY power banks
• Bluetooth speakers
• Electronic toys and gadgets