Auction is for an upgraded Battery over the factory Battery.

I am a long time user of the NITERIDER MINEWT CORDLESS lights.  Years ago I went and upgraded my batteries from the factory ones. So I remember up grading to 2900 mAh cells back then.
Believe it or not I sold my "used" good cells because folks do use up the batteries over time and needed newer cells.
Don't get me wrong  the factory batteries are typically good quality Japanese (not Chinese) cells but only had 2400, 2600 mAh of capacity depending on model and size.

Now I have found the same factory Japanese cells that NightRider uses except I now have them in 3100mAh versions.
I just pulled one from stock and did a capacity test on it,... a whopping 3199mAh and that only measured down to 2.8v not the 2.5v spec, these are great cells!!!

That is as much as a 30% or more increase in run time from new.  Also consider that because of the built in safeties we don't get to use every last mAh listed, upgrading to new larger capacity cells really makes a big difference in run time!.

Night rider accepts a very limited size cell, other sizes just don't fit right. 

I also have a few tricks to help you make these new cells work even better in your installation.

All you need is a M2 Allen (hex) wrench and you can bring new life to your old trusted Niterider Minewt Cordless Light.

Please note that the newer Lumina series lights are not as easy to upgrade the battery.  And are not as water tight. I personally think the Minewt Cordless lights are still the best (don't upgrade/replace the whole light just upgrade the battery)!

Important li-ion safety:
    Never completely discharge li-ion battery ( below 2.5V )
    Use only high quality battery charger
    Do not expose to heat
    Never charge battery over 4.22V (another reason to use high quality battery charger)
    Do not store your li-ion batteries fully charged (for extended period of time) (heat and charge level contribute to capacity loss over time)
    Store in cold and dry place at approximately 3.6V-3.7V (storage charge)

Most of these are taken care of by the built in NR charging function.


The below is taken from NiteRider's website:

NiteRider’s Limited Lifetime Warranty does not cover normal wear and tear, abuse or normal degradation of the battery that occurs over time. It may not be possible to repair some of the older light systems because some parts may have become obsolete.
What’s the best way to care for my lithium-ion battery?
All batteries require some maintenance to ensure optimal performance. Lithium-ion batteries are state-of-the-art and re-quire minimal maintenance. Since they do not experience any of the “memory effect” of older battery technologies, they do not need to be drained prior to recharging. After a long period of storage, the battery should perform when put back into use if it has been properly cared for. However, battery cells have a shelf-life of between 3-5 years and they degrade despite how much or how little use they undergo. This shelf-life will affect how the battery performs after a long period of storage.
How many charges can I expect from my lithium-ion battery?
With proper care and maintenance, one can expect approximately 350 charge/discharge cycles. Lithium-ion batteries can be affected by temperatures that fall below freezing.