18650 Battery Case with Anti-Explosive Cap and Insulation O-ring, battery raw materials
1.Case Dimensions:18mm(OD) x 17.5mm(ID) x 67mm(H)
2.Top Cap:17.5mm(D) x 4.05mm(H)
Please check the below specification just for reference.
Name Steel case Model 18650 Date 2014.7
No BL-001 Quantity 1000pcs Test Date 2014-7-3
Test Standard MIL-STD-105E
Samples methode Strict
Sample qty 500pcs
Standard According to the request
No Item Standard(mm) Test result Conclusion
CRI MAJ MIN
1 Height 67.3± 0.05 67.28-67.31 0 0 1
2 Outer dia 18.0± 0.05 17.98-18.01 0 0 1
3 Inner dia 17.5± 0.05 17.48-17.51 0 0 0
4 Wall thickness 0.25± 0.02 0.23-0.245 0 0 0
5 Bottom thickness 0.3± 0.02 0.29-0.3 0 0 0
6 Coating thickness 2-6um 3-6um 0 0 0
7 Salt spray test GB6461-2002≥ 4grade ≥ 5 grade 0 0 0
8 Appearance No concavo-convex, no scratch, oil stain, oxide, flaw, barr, gap, etc qualified 0 0 0
9 0 0 0
10 0 0 3
Sample 500pcs Reject ratio 0 0 1%