In Reply to: Improved Regen sound posted by jkeny on November 22, 2015 at 13:43:48:
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
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- RE: Improved Regen sound - pictureguy 23:34:07 11/22/15 (57)
- RE: Improved Regen sound - jkeny 08:28:54 11/23/15 (56)
- RE: Improved Regen sound - pictureguy 09:14:29 11/23/15 (55)
- RE: Improved Regen sound - jkeny 10:06:22 11/23/15 (54)
- RE: Improved Regen sound - pictureguy 12:02:06 11/23/15 (53)
- RE: Improved Regen sound - jkeny 12:47:00 11/23/15 (52)
- RE: Improved Regen sound - pictureguy 16:23:42 11/23/15 (23)
- RE: Improved Regen sound - jkeny 16:43:30 11/23/15 (22)
- RE: Improved Regen sound - pictureguy 17:18:31 11/23/15 (21)
- RE: Improved Regen sound - jkeny 00:22:01 11/24/15 (17)
- RE: Improved Regen sound - pictureguy 00:36:30 11/24/15 (16)
- RE: Improved Regen sound - jkeny 01:14:05 11/24/15 (15)
- RE: Improved Regen sound - theob 03:06:38 11/24/15 (14)
- RE: Improved Regen sound - jkeny 03:22:35 11/24/15 (13)
- RE: Improved Regen sound - theob 03:24:20 11/24/15 (12)
- RE: Improved Regen sound - jkeny 03:57:06 11/24/15 (1)
- RE: Improved Regen sound - theob 16:06:33 11/24/15 (0)
- RE: Improved Regen sound - theob 03:42:36 11/24/15 (9)
- RE: Improved Regen sound - chopper87@aol.com 09:28:41 11/24/15 (3)
- RE: Improved Regen sound - theob 16:35:47 11/24/15 (2)
- RE: Improved Regen sound - chopper87@aol.com 19:11:56 11/24/15 (1)
- RE: Improved Regen sound - theob 09:41:52 11/25/15 (0)
- RE: Improved Regen sound - jkeny 04:01:23 11/24/15 (4)
- RE: Improved Regen sound - Tony Lauck 08:03:47 11/25/15 (3)
- You can also say: - fmak 10:24:25 11/25/15 (0)
- RE: Improved Regen sound - jkeny 08:37:55 11/25/15 (1)
- Theory or Speculation? - fmak 10:29:36 11/25/15 (0)
- RE: Improved Regen sound - Bob_C 20:36:26 11/23/15 (2)
- RE: Improved Regen sound - pictureguy 00:43:01 11/24/15 (1)
- RE: Improved Regen sound - jkeny 01:11:05 11/24/15 (0)
- The question is: - fmak 13:08:44 11/23/15 (27)
- RE: The question is: - jkeny 13:42:08 11/23/15 (26)
- RE: The question is: - fmak 22:08:43 11/23/15 (25)
- RE: The question is: - jkeny 00:31:14 11/24/15 (24)
- RE: The question is: - Tony Lauck 08:18:04 11/25/15 (23)
- RE: The question is: - fmak 22:06:44 11/25/15 (21)
- RE: The question is: - jkeny 00:30:19 11/26/15 (20)
- RE: The question is: - fmak 00:55:23 11/26/15 (19)
- RE: The question is: - jkeny 03:07:19 11/26/15 (18)
- RE: The question is: - fmak 04:58:51 11/26/15 (17)
- RE: The question is: - jkeny 05:19:33 11/26/15 (16)
- Speculation - fmak 06:06:07 11/26/15 (15)
- RE: Speculation - jkeny 08:02:16 11/26/15 (14)
- RE: Speculation - Tony Lauck 08:47:22 11/26/15 (8)
- I suspect this requires bypass right near the load - fmak 09:12:43 11/27/15 (5)
- RE: I suspect this requires bypass right near the load - jkeny 09:28:06 11/27/15 (4)
- Long Experience? - fmak 10:30:20 11/27/15 (3)
- RE: Long Experience? - jkeny 10:36:55 11/27/15 (2)
- RE: Long Experience? - Tony Lauck 12:56:35 11/27/15 (1)
- RE: Long Experience? - jkeny 13:01:22 11/27/15 (0)
- RE: Speculation - jkeny 10:12:50 11/26/15 (1)
- Specific Speculation - fmak 10:34:24 11/26/15 (0)
- More sonics - theob 08:22:08 11/26/15 (4)
- RE: More sonics - jkeny 10:25:04 11/26/15 (3)
- RE: More sonics - chopper87@aol.com 10:25:23 11/28/15 (2)
- RE: More sonics - jkeny 10:28:17 11/28/15 (1)
- RE: More sonics - jkeny 09:30:58 11/30/15 (0)
- RE: The question is: - jkeny 09:07:40 11/25/15 (0)