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Bench Retest Results: Sony VC7 (not VTC7) 8A 3500mAh 18650...great battery for low power use

Discussion in 'Batteries and Chargers' started by Mooch, May 20, 2018.

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  1. Mooch

    Mooch Electron Wrangler Verified Member ECF Veteran

    Supporting member
    May 13, 2015
    These tests below only note the estimated ratings for these batteries at the time I tested them. Any battery that is not a genuine Samsung, Sony, LG, Panasonic, or Sanyo can change at any time! This is one of the hazards of using “rewrapped” or batteries from other manufacturers so carefully research any battery you are considering using before purchasing.

    Misusing or mishandling lithium-ion batteries can pose a SERIOUS RISK of personal injury or property damage. They are not meant to be used outside of a protected battery pack. Never exceed the battery’s current rating and keep the plastic wrap and top insulating ring in perfect condition.

    Testing batteries at their limits is dangerous and should never, ever, be attempted by anyone who has not thoroughly studied the dangers involved, understands the risks, has the proper equipment, and takes all appropriate safety precautions.

    If the battery has only one current rating number, or if it only says "max", then I have to assume the battery is rated at that current level for any type of discharge, including continuous.

    449993F3-15FA-41D3-AE94-AB567323659B.jpeg 15090D3E-EF2E-4660-81E1-692113D9A70C.jpeg 7FEA85B2-E4C8-4E54-97BF-3A8B1014B501.jpeg 9D349ECE-CB7B-4C69-B2D2-06731C959A7C.jpeg

    Bottom Line
    This is not the “VTC7” as there is no such battery. This is a great performing high capacity battery for vaping at 5A/15W (per battery) or less. It is up there with the other two best performing high capacity 18650’s, the Sanyo/Panasonic NCR18650GA and the LG MJ1.

    This cell, and any of the other over-3000mAh 18650’s, can be used at up to their ratings but their high internal resistance means there is a lot of voltage sag. They run a lot more efficiently down near 5A or less. Above 5A-7A the 3000mAh 15A-20A cell’s like the 30Q, VTC6, and HG2 become the better choice since they are a lot more efficient.

    At 5A down to 3.2V the VC7 delivered 7.6Wh of energy. The MJ1 delivered 7.7Wh, essentially the same, and the NCR18650GA delivered 8.0Wh. The capacities of the two cells I tested were 3427mAh and 3473mAh, meeting Sony’s minimum capacity rating.

    The NCR18650GA is still my number one choice for low power vaping or flashlight/powerbank use, but this cell is in the top three.

    Sony rates this cell at 8A continuous and 3400mAh minimum, 3500mAh typical.

    Two cells were purchased for the purpose of testing by me.

    Continuous Current Discharge Graph

    Ratings Graphic

    I want to work for the vaping community full time! If you feel what I do is worth a couple dollars a month and you would like early access to battery availability and testing news and a say in what I test then please consider becoming a patron and supporting my testing efforts: Battery Mooch is creating battery tests and educating vapers | Patreon

    To see how other cells have tested check out this link: List of Battery Tests | E-Cigarette Forum
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