Efest IMR18350 800mAh (Red)

V1 flat top



Official specifications:

• IMR 18350 800mAh Rechargeable 3.7V LiMn Battery(2pcs)
• Spec:IMR-18350 800mAh 3.7V
• Material: IMR
• Size(mm): 35(L)X18(D)

I got a pile of batteries in one envelope, not the best way to ship batteries, even when they are shrink wrapped. Efest have changed their packing.























V2 button top


Official specifications:

• Spec: LiMn 18350 800mAh 3.7V
• Material: IMR
• Size(mm)34.73(L)*18.10(D)

I got a pile of batteries in one envelope, not the best way to ship batteries, even when they are shrink wrapped. Efest have changed their packing.






















Conclusion

These IMR batteries can handle high loads, but has a slight difference in capacity, i.e. care must be taken not to run one battery down.
I will rate them as acceptable.



Notes and links

How is the test done and how to read the charts
How is a protected LiIon battery constructed
More about button top and flat top batteries
Comparison to other LiIon batteries