While rechargeable batteries’ has somewhat matured regarding their self discharge characteristics, there is no great results from any type of such Nimh cells.
Double A (AA) Eneloop was the first type with somewhat acceptable Low self discharge behavior, but personal testing shown that battery life degrades even by not recharging them frequently.
My experience with first and second generation of AA & AAA Eneloop in the past four years time, shown that even with less than 80 recharge times, their internal chemistry degrades and internal resistance build up which making the cells unusable.
Regarding 9V Nimh cells those for unknown reason they never become a target product for further development so these to gain a higher Low self discharge behavior.
Only two brands shown interest to further develop 9V Nimh, Tenergy Centura is one of them and Ansmann the second.
But the major problem of both is availability and that Ansmann comes in very high price. Professionals’, like me who
get involved in electrical and electronics repairs they do end up owning several measuring and test devices operating with 9V battery, and such examples could be:
TV remote control tester,
Infrared thermometer gun,
Distance meter with laser or ultrasonic,
Wires tracker with remote receiver,
PC network wires tester (polarity and continuity),
All those are useful tools and must always be ready for action, but some of those will not have intensive use and the cost for getting 9V Nimh
cells for all of them it does become true bourbon.
By taking under consideration that Nimh degrades by the years even with light use, those thoughts makes even people like me who favor recycling and the green planet concept to give a second chance to Alkaline cells. New added legislation in some countries forcing them
using smoke detectors, this as application become the new benchmark for 9V cells.
After some research of my own, I did realize that alkaline battery market is very messed up in 2015.
While most or all cells are made in China, the problem is this tremendous availability of battery cells which most coming from totally unknown sources.England and Germany
was and is from the countries with most strict legislation regarding quality assurance and product specifications even at imported goods.
Supacell brand is UK based, started as small distributor and continuously expands, their alkaline cells according to customers feedback shown good behavior at this smoke detector benchmark, but even so ITTSB blog wanted to test and verify if this promise about 6 times more
Power is truly a fact. Supacell is one division of Multibrands,
and I wish to thank them for the generous supply of cells of my choice so theses to be tested.
Some test results will become available sooner and some others will become available in time.
What matters to me today is that Supacell did not afraid this ITTSB Blog challenge, and this detail make me to feel optimistic by assuming that Supacell digital product series, they actually hide in them performance which simply has to be also confirmed due my testing too. My testing procedure will
be made and recorded by the use of precision equipments.
For example 9V capacity test will be verified by using my Microcal 1030 which is mini calibrator and operates as current source with adjustable output.
This is an almost 400 EUR gadget made by Time Electronics Ltd, Tonbridge, Kent, United Kingdom.
Data logging will be made too by one of ITTSB Blog high precision multimeter, and because there is many, I will use the one with most suitable software for the specific application.
The plan is Supacell 9V Alkaline
to compete with a totally fresh Maxell Super alkaline
, and by this opportunity I will do capacity testing even of those 9V Nimh which I have here all ready.