This guide helps B2B buyers and pack builders choose prismatic LiFePO4 cells for 4S / 8S / 16S assemblies. It is a purchasing decision aid, not a datasheet. Exact shipment specs are confirmed in writing with the quotation.
1. Start from the pack voltage, not the brand
| Pack target | Series | Nominal pack voltage | Typical cell class on BattCrate |
|---|---|---|---|
| 12.8 V | 4S | 12.8 V | 105 Ah slim (e.g. LF105-class) or 280/314 Ah large-format |
| 25.6 V | 8S | 25.6 V | 280/314 Ah large-format |
| 51.2 V | 16S | 51.2 V | 280/314 Ah large-format |
Pick series count first; then capacity; then brand/batch. Do not assume 280 Ah and 314 Ah cells from different makers are drop-in interchangeable — outline tolerances differ.
2. Grade A and matching
- Grade A on our listings means supply coordinated to the maker’s Grade A definition; grade documents are confirmed with the quotation. Capacity/IR matching is confirmed per quotation — not a stock guarantee.
- For multi-cell packs, ask for matched groups (capacity and internal resistance windows) in the RFQ. Unmatched cells raise balance and early-fade risk.
3. 280 Ah vs 314 Ah
| Topic | 280 Ah class | 314 Ah class |
|---|---|---|
| Energy per cell (3.2 V) | ~896 Wh | ~1,005 Wh |
| Footprint class | Common 71.7 mm thickness class | Same thickness class, brand-specific outline |
| When to prefer | Existing 280 designs, fixtures, busbars | Higher energy in similar volume |
| Watch-outs | Confirm terminal type (e.g. M6) and height incl. terminal | Do not assume drop-in vs EVE MB31 vs CALB L173F314A |
BattCrate 280-class examples: BC-CELL-001 EVE LF280K, BC-CELL-004 CATL CB310, BC-CELL-005 Hithium LFP71173207. 314-class examples: BC-CELL-002 EVE MB31, BC-CELL-006 CALB L173F314A.
4. Cycle-life numbers are not comparable raw
Makers publish cycle life under different end-of-life criteria (e.g. 70% SOH vs 80% capacity) and clamp/temperature conditions. Use the figure with its test condition when comparing. We do not adopt marketing “10,000 cycles” claims that lack the shallow-DoD context.
5. RFQ checklist (send with your enquiry)
- Series/parallel (e.g. 16S1P) and target energy
- Preferred cell model codes (or “280-class / 314-class”)
- Matching requirement (capacity / IR window)
- Terminal / busbar / compression fixture constraints
- Quantity and destination port
Request a quotation
- EVE LF280K — /contact/?product=BC-CELL-001
- EVE MB31 314Ah — /contact/?product=BC-CELL-002
- EVE LF105 — /contact/?product=BC-CELL-003
- CATL 280Ah — /contact/?product=BC-CELL-004
- Hithium 280Ah — /contact/?product=BC-CELL-005
- CALB L173F314A — /contact/?product=BC-CELL-006
Datasheets accompany quotations only. No public prices, stock, or certification claims on this site.