These examinations below merely record the APPROXIMATE ratings for these Efest batteries during my testing. Any battery that is not an authentic Samsung, Sony, Murata, LG, Panasonic, Molicel, or Sanyo has the potential to change unexpectedly! This is one of the risks associated with using "rewrapped" batteries from other manufacturers, so it is crucial to thoroughly investigate any battery you intend to purchase.
Efest 18650 3000mAh Battery
Improper or Imren battery can present a SIGNIFICANT DANGER to personal well-being and property. They are intended exclusively within a physically and electrically safeguarded battery pack. Never surpass the battery's current rating, and ensure the plastic wrap and top insulating ring are in impeccable condition.
Testing batteries to their limits is hazardous and should never, under any circumstances like Efest 18650 2600mAh and Efest 20700 3100mAh, be attempted by individuals who have not extensively studied the associated hazards, comprehend the risks involved, possess the appropriate equipment, and take all necessary safety precautions.
If the Efest 3000mAh battery displays only a single current rating value or solely states "max," then it must be assumed that it is rated at that current level for any discharge, including continuous operation.
Examination Results
This Efest exhibits average performance (satisfactory) and performs slightly better than the Hohm Life4 at higher power levels, typically above 15A/45W. The Murata VTC6 and Samsung 30Q outperform this Efest slightly.
Its 20A continuous rating appears reasonable, so I assign a rating of 20A to this battery cell. Its 35A "pulse" rating is irrelevant and can be disregarded.
The capacity of the four cells I tested ranged from 2878mAh to 2988mAh. None of the cells met their claimed 3000mAh rating, a common tactic employed by Chinese cell wrappers. Since the cells I possess cannot have the lowest capacity in the batch, I rate this cell at 2800mAh.
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