17 of 17 people found the following review helpful
Works Great So Far,
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This review is from: TWO Pack Maha PowerEx MHR9VI IMEDION "Ready When You Are" 9 Volt Size Low-Self-Discharge NimH Rechargeable Battery [9.6 Volts, 230 mAh] (Electronics)
I recently purchased several different Hybrid NiMh batteries and performed simple current and voltage tests. Nothing as elaborate as some of the testing I have seen reported on-line by other reviewers, but enough for me to get a sense of the performance of different brands. Of the three or four different brands I have looked at, these Maha batteries are absolutely the best. The manufacturer claims they are rechargeable up to 1000 times which is at least twice as much as the other brands I have seen. Haven't had mine long enough to know if this is true, but based on their superior performance so far I tend to believe the claim.
This battery is available in both 9.6 volt and 8.4 volt versions. I first purchased the 9.6 volt battery thinking that this would work better in my electrical meters because it would maintain closer to the approximately 9.5 volts that a new alkaline battery for which the meters were designed would put out. However, it turns out that when fully charged, the 9.6 volt Imedion puts out 10 to 11 volts under light load. This probably makes it a great choice for devices that draw a lot of current. I decided to try the 8.4 volt Imedion in my meters which have typically low current draws, and, indeed, they maintain their voltage in the 9.0 to 9.75 volt range when freshly charged.