Do they make a NiMH LSD 9 volt cell?

[Turbo DV8]

Tried to do a search on this, but if one happens to not magically hit upon a "sweet" search term, this 60 second wait between searches is a real drag!

I could really use a NiMH low self-discharge 9 volt rechargeable battery. Is there such a beast yet?

 

[SilverFox]

Hello Turbo DV8,

I am not aware of any specific LSD 9V batteries, but because of their low capacity, most 9V batteries don't have a very high rate of self discharge.

I charged up some 9.6 V 260 mAh and some 9 V 260 mAh batteries a little over a month ago and they are still reading 100% on my ZTS.

Tom

 

[Fallingwater]

There is a 2S LiPo "8.4 volt" cell. Note that voltage will decrease as the battery is used - when completely empty it's about six volts.

 

[SilverFox]

Hello Fallingwater,

Thanks for bringing those up. I forgot all about them.

I believe that if you go with the LiPo 9 volt cell, you need a LiPo charger. They will not survive charging on a NiMh charger.

Tom

 

[koala]

I brought this up before 9.0V LiFePo4 but I am not sure how does the internal cell balancing works. LiFePo4 can withstand overcharging but in exchange of cell health.

I would avoid LiPo 9v at all cost. If internal cell balancing in a LiPo9V is unknown then I would buy full cover home insurance today. :laughing:

 

[Turbo DV8]

Hello Turbo DV8,

I am not aware of any specific LSD 9V batteries, but because of their low capacity, most 9V batteries don't have a very high rate of self discharge.

I charged up some 9.6 V 260 mAh and some 9 V 260 mAh batteries a little over a month ago and they are still reading 100% on my ZTS.

Tom

Thanks, everyone. So do they make regular NiMH 9 volt cells? With all the "smart" chargers I have, the only chargers I have that will charge 9 volt cells are two Energizer timer chargers that came with some 2100 mAh Enrgizer cells. 9v charge rate is 23 mA. I do have two old 8.4v NiCd batteries that say charge at 7-10 mA for 14-16 hours. Any guess if it would be OK to charge these at the 23 mA the Energizer puts out? I am guessing that it might overcharge the NiCd 9v's, but then I am not sure how long the timer is on the charger. What is the typical capacity of a NiCd 9 volt battery? If anyone can provide this information, I may run a charge on one of the NiCd's @ 23 mA and time it to see if it is severely overcharging the battery.

 

[Tjin]

i have seen uniross version of a 9V LSD NiMH on ebay:

http://cgi.ebay.nl/3-Uniross-9V-rec...ryZ40975QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

 

[Black Rose]

Thanks, everyone. So do they make regular NiMH 9 volt cells? With all the "smart" chargers I have, the only chargers I have that will charge 9 volt cells are two Energizer timer chargers that came with some 2100 mAh Enrgizer cells.

Maha has 230 mAh 9.6 volt NiMH cells, but you might have to use their charger to charge them.

Here is a link to the charger + battery kit:
http://www.mahaenergy.com/store/viewItem.asp?idProduct=369