5S2P 18V / 21V 7Ah Li-ion Battery – 10x18650 Pack

High-capacity 18V lithium battery pack for assembly and repair

Rechargeable lithium-ion battery consisting of 10 18650 cells arranged in a 5S2P configuration, designed for the manufacture, rebuilding, and integration of 18V/21V battery packs requiring long runtime and stable power output.

Designed for systems with a nominal 18V supply (21V at full load), it is suitable for applications with high power and current requirements.

Electrical Architecture and Technology

Internal configuration:

• 5 cells in series (5S)

• 2 cells in parallel (2P)

• Rated voltage: 18V

• Full-load voltage: 21V

• Total capacity: 7Ah

• Energy: 126 Wh

Lithium-ion technology offers:

• high energy density

• stable voltage under load

• excellent performance over the course of the cycle

• low self-discharge

⚠️ Battery shipped without a BMS.
A 5S BMS is required and must be installed depending on the application.

Technical Specifications

• Configuration: 5S2P

• Technology: Lithium-Ion (Li-ion)

• Cell size: 18650

• Number of cells: 10 (5×2)

• Rated voltage: 18V

• Full-load voltage: 21V

• Capacity: 7,000 mAh (7 Ah)

• Energy: 126 Wh

• Dimensions: 92 × 65.5 × 37 mm

• Weight: ≈ 450 g

• Connection: Solder tabs

• Rechargeable: Yes

• Protection: External BMS required

Compatible Apps

Intended for integration into:

• 18V Power Tools (drills, screwdrivers, grinders, etc.)

• High-Power Portable Equipment

• Mobile robots and light electric vehicles

• R&D Projects

• Industrial Embedded Systems

• Portable Solar Kits

• 18V Li-ion Battery Rebuilding

• High-Capacity DIY Projects

Compatible with any system that uses a 5S Li-ion battery pack (18V / 21V at full charge).

Technical Correspondences and Equivalencies

Technical equivalent:

• 5S2P Li-ion Battery Pack

• 18V Lithium Battery

• 21V Full-Charge Pack

• 10×18650 Series/Parallel Pack

• 18V Power Tool Battery Rebuild

Compatibility depends on:

• of the BMS used

• rated current

• mechanical interference

• of the final connection system