Powerex Precharged 8.4V Rechargeable Low Self Discharge NiMH Battery (MHR84VP)
300Mah Typical Size, Rechargeable Low Self Discharge Nimh Battery (Mhr84Vp) ; Visit The Powerex Store, Common Li-Ion Battery, Rechargeable Low Self Discharge Nimh Battery
Results of our analysis:
We analyzed 55,953 reviews for 88 products in the 9V Batteries category.
We then analyzed 55 reviews for this product. Of these, 7 reviews were recent.
100% of reviews were positive.
Final Score:

8.52 out of 10, based on these factors:
Common Questions
Where do the batteries come from?
The battery was shipped from Taiwan on 10/3/2020 and measured 10.3vdc out of the package.
It can be charged up to hundreds of times according to the website.
I bought the powerex charger 14 months ago, but I'm down to one that works still because I dropped the other. Don't drop them, they don't work.
I found a brand that would've been perfect but it's unavailable now. What does the low self discharge mean?
I bought the Powex because I was interested in 9 v batteries and wanted to know if it was compatible with the Autococker.
Will they work for the pesty all energy draining spin spa device?
I don't know what a spin spa is, but I use these in camera flashes and shoot pretty much non-stop for hours if you treat them right.
Will these work for solar powered garden path lights?
The battery should work well if the specification is NiMh.