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RE: Improved Regen sound

i'd just like to make a few 'notes' on batteries and Lithium chemistry in more particular.

It is important to note 2 things. Lithium and Lithium ION batteries are 2 different categories.
But in EITHER you will have a choice of several chemistries. This leads to one major, common outcome. You will have a wide choice of Cell Voltage to deal with. The Lithium Polymer with very high energy density typically has a cell voltage of 3.7 volts. So, a '3 cell' battery will be 11.1 volts fully charged. These batteries are also rated with a 'C' value which somehow reflects the ability to discharge very rapidly. Some of the hobby motors used can Easily have in excess of a 40 amp draw. A low internal resistance battery is ESSENTIAL.
Some other lithium chemistries are both higher and lower voltage. Some are low enough to be used as direct replacements for your good old Alkaline battery.

A little research on the part of those wishing a battery replacement should yield some good results. I'm certain that a low internal resistance battery which is also low noise CAN be found.
One in particular, a Li-SOCl2 chemistry is good in VERY cold conditions. This battery, if kept cold MAY also have lower noise? Call it about 3.5 volts in use. I have NO idea how to 'refrigerate' a battery in-use.

Some lithium cells are and some are NOT rechargeable. Don't try to recharge a single-use cell or you might have a problem.

The Hobby Shop types sell a recharger BAG to contain any potential problems when recharging your Li-ion battery and some of the chargers are VERY smart, indeed, even capable of 'balancing' the voltage between cells.

In some of the above posts, I see reference to both a 5v and 3v regulated PS. This, I think, means you need a battery to supply a higher voltage then than highest output voltage you wish.
Too much is never enough

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  Michael Percy Audio  

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