rechargeable 28L battery

[les]

I've been searching for a couple days for a rechargeable 28L type
( 6V./ dog collar style) battery. The only type found is lithium, but
not rechargeable.
Since I use this often, the Lithium cells gets expensive, and I want to
conserve waste and cost.
Does anyone know if they even make this cell type in Ni-MH or
other rechargeable chemisty ??
Thanks

Les

 

[default]

I've been searching for a couple days for a rechargeable 28L type
( 6V./ dog collar style) battery. The only type found is lithium, but
not rechargeable.
Since I use this often, the Lithium cells gets expensive, and I want to
conserve waste and cost.
Does anyone know if they even make this cell type in Ni-MH or
other rechargeable chemisty ??
Thanks

Les

Don't know what a 28L is presumably a watch hearing aid if it goes on
a dog collar?

I have this old Radio Shaft clock that takes (and promptly eats) 9 V
"standby" batteries.

I found two sources of mini rechargeable batteries for it. All
Electronics has a surplus 2.4 V 15 mah packs 0.93" X 0.54" X 0.15"

Their part number is NMH-15 www.allelectronics.com $1.25 each pack
(two cells in shrink tube served with wires and a connector)

I wired three in series and use a 10K resistor to trickle charge them
from the internal 10 V supply. Fits the 9V compartment with room to
spare.

Electronic Goldmine has similar packs.

 

[les]

I wish it were a standard battery, but you know, engineers sometimes
pick the oddest batteries in their designs.

It's a small 6V battery, ALMOST like an "N" sized battery.
However, it's lithium, and it's for a dog collar. On standby
this sucks energy like crazy. That's why I'm trying to economize
on the waste.
I haven't seen anything but lithium so far.
I hope someone out there has seen something otherwise.....

Les

 

[default]

I wish it were a standard battery, but you know, engineers sometimes
pick the oddest batteries in their designs.

I don't know that I buy that last. Seems to me some of the crap I see
looks like it was designed by an interior decorator or female real
estate sales agent.

My microwave is a prime example of that - the display is recessed from
the window so I have to bend to see it, the light stays on with the
door open, close the door and condensate obscures the display, none of
the function keys is arranged logically except the numerical keypad,
they add a lot of features that have to be reprogrammed each time the
power fails, the beeper goes off and through an entire cycle in spite
of opening the door or pressing keys, (who needs a beeper when the
thing sounds like a 747?) Why can't they put a back up cap/battery in
the clock?

The engineering seems pretty good - otherwise - heats food fast.

Needless to say, I've already "moded" the MW