New Case 4x ACE 3.2V 280Ah LFP Prismatic Cells — Overstock

These are new, unused surplus 3.2V 280Ah LFP prismatic cells (aluminum can) manufactured in 2022/2023 and kept in controlled storage. Sold as a matched set of 4 cells only — no busbars, nuts, or hardware included.

These are standard-footprint 280Ah prismatic cells that are broadly interchangeable with common industry 280Ah cells. Perfect for DIY packs, solar storage, EV conversions, and high-capacity builds.

What’s included: 4x brand new 280Ah LFP prismatic cells (new in box / overstock)

Key Specs:

• Nominal capacity: 280 Ah @ 0.5C
• Nominal voltage: 3.2 V
• Nominal energy: ~896 Wh per cell
• Fully charged: 3.65 V
• Discharge cutoff: 2.5 V (>0 °C) / 2.0 V (≤0 °C)
• Max continuous discharge: 1.8C (20–30 °C)
• Max charge current: 1C (25–45 °C)
• Internal resistance: ≤0.25 mΩ (AC, 1 kHz)
• Rated cycle life: ~6,000 cycles (0.5C/0.5C with proper stack pressure)
• Weight: ~5.45 kg (≈12 lbs) per cell
• Terminals: M6 threaded studs

Approximate Dimensions (per cell): 6.86" (W) × 2.83" (T) × 8.13" (H) (Standard 280Ah prismatic footprint)

Shipped at approximately 30% SOC in UN-certified packaging.

These are sold as surplus/overstock — new in box, unused condition.