1S 3.7V 18650 BMS Protection Board with Nickel Strips – 3A Single Cell Power Bank DIY

Safe and simple 3A protection. This 1S (single-cell) 3.7V BMS/PCM board provides reliable protection for 18650 lithium-ion cells. Pre-attached nickel strips make spot-welding quick and clean for DIY power bank and compact battery projects.

Key Features

• Configuration: 1S (single cell, 3.7V nominal)
• Rated current: 3A continuous
• Protections: Over-charge, over-discharge, over-current, short-circuit
• Form factor: Ultra-slim PCB with extended nickel strips
• Use cases: DIY power banks, flashlights, compact single-cell projects

Pack Options

• 1-Pack: For prototypes or single repairs
• 5-Pack / 10-Pack / 20-Pack: Cost-effective bundles for builders

Tip: Always verify polarity before welding. Use quality 18650 cells for best performance.

Backed by RenewSpark 30-day money-back guarantee.