MXJO 21700 4000mAh 20A Battery Review

21700 rechargeable batteries


These examinations below solely record the estimated ratings for these batteries during testing. Any battery pack that is not an authentic Samsung, Sony, LG, Panasonic, or Sanyo has the potential to fluctuate unpredictably! This is one of the dangers associated with utilizing "rewrapped" batteries from other manufacturers, so conducting thorough research on any battery you contemplate using before purchasing is crucial.

Improper use or mishandling of lithium-ion batteries can present a SIGNIFICANT THREAT of personal harm or damage to property. They are not intended for utilization outside of a protected battery pack. Never surpass the battery's current rating; ensure that the plastic wrap and top insulating ring remain impeccable.

Conducting tests on batteries at their limits is hazardous. Under any circumstances, it should never be attempted by individuals who have not extensively studied the associated dangers, comprehended the risks involved, possessed the appropriate equipment, and taken all necessary safety precautions.

If the battery displays only one current rating figure or solely mentions "max," it must be presumed that it is rated at that current level for any form of discharge, including continuous.

MXJO 21700 4000mAh

This accurately rated high-capacity cell performs up to approximately 10A-15A/30W-45W or thereabouts. Beyond that, the Golisi S35 3750mAh or Efest 3500Ah delivers better performance due to their lower internal resistance.

It is the same cell utilized by the overrated Basen 30A 4000mAh 21700 battery.

While the continuous rating is indicated on the battery wrap, it also includes a useless "max pulse" rating like MXJO 18650 3000mAh. This is regrettable as it is accurately rated otherwise.

The two batteries I tested provided 4125mAh and 4243mAh at 0.5A until reaching 2.5V, exceeding their 4000mAh rating. While this is common for Samsung, Sanyo, LG, Panasonic, and Sony batteries, it is not often observed in others.

However, it is commendable, and I encourage other battery wrapping companies to refrain from using the highest capacity they find within a group of batteries for their rating. The rating should be lower than the lowest capacity delivered by any battery; that is, it should represent a minimum capacity rating. This is what MXJO has done.

The ratings of this battery are 20A and 4000mAh.

Two batteries were purchased to test me.

MXJO Imr 21700 Performance Specifications

DC Internal Resistance = average of 22.0mOhms (milliohms) for the two batteries. Total energy delivered down to 3.2V at 10A continuous = average of 11.6Wh (Watt-hours)

Total energy delivered down to 3.2V at 20A continuous = average of 6.7Wh (Watt-hours)


MXJO 21700 Battery: Powering Your Vaping Experience and Discovering the SOC Peak Vape

As we explore the capabilities of the MXJO 21700 4000mAh 20A battery, we must consider the broader landscape of innovative vaping experiences. Delve into our dedicated article on the SOC Peak Vape, a device crafted for connoisseurs seeking the pinnacle of dabbing sophistication. Whether you're drawn to the powerful performance of the MXJO battery or intrigued by advancements in vaping technology, the SOC Peak Vape awaits, promising to redefine your dabbing journey with precision and style.