Assembly Cell Batteries

Assembly cell batteries are individual rechargeable cells designed for building, repairing, and upgrading custom battery packs for tools, e‑mobility, robotics, and portable power. They offer control over capacity, size, voltage, and discharge rate, helping you tune performance to your project and budget. With the right cells, you can achieve higher power delivery for demanding loads, longer runtime for field work, and easier serviceability than sealed packs. This category supports makers, technicians, and OEMs who need reliable cells for repeatable, safe, and high-performance pack construction.

Find popular formats like 18650 and 21700 lithium-ion, prismatic LiFePO4 for long cycle life and enhanced thermal stability, pouch cells for tight spaces, and NiMH sub‑C for legacy power tool packs. Look for brand-name options from trusted manufacturers, with datasheets, batch traceability, and internal resistance grading to simplify matching. Choose cells by capacity (mAh/Wh), maximum continuous and peak discharge, and temperature ratings. Many listings include pre-welded tabs, insulating rings, and cell spacers to speed assembly and improve consistency.

Typical uses include:
- E‑bikes and scooters
- Power tools and garden equipment
- Portable power stations and UPS
- Drones, RC, and robotics
- Solar storage and off‑grid systems
- Test rigs and R&D prototypes

Buying tips:
- Match cells by capacity and internal resistance; buy from the same production lot where possible.
- Select chemistry by application: NMC/NCA for energy density and power; LiFePO4 for safety and cycle life; NiMH for simplicity.
- Confirm physical dimensions, tab style, and pack layout (series/parallel) before ordering.
- Verify continuous/peak current against your BMS, wiring, and fuse choices.
- Request UN38.3/IEC reports and MSDS for compliance and shipping.
- Use a spot welder, proper nickel strip, insulation, and cell holders; never solder directly to bare Li‑ion cells.

Browse by chemistry, format, capacity, discharge rating, brand, and tab options to build a durable, high-performing battery pack with confidence.