12V 60A car battery , maybe dead?

[Hope]

Melt in warm distilledwater 10 teaspoons Epson salts, distrubute equally into cells of a 850 amp hr battery    cook   2amp   discharge to 9volts  recharge at 2 amps    lead sulfation is GONE!   can repeat this around 5 times over the years       ))   GL  if your battery is different size  multiply diminisions and compare to 850 amp battery to get a ratio that is correct for your battery.  ))   Your battery sounds like it is shorted in one cell (prob is normally in most negative cell, perhaps a total dumping and refilling will remove that crap in the bottom that can short your plates, then clean the plates with the mag sul (epsom salts), BEWARE!!!! Your fluid is an acid!!! Treat it like poison dont get it on you or anything you want to keep!  Filter the fluids and reuse or replace with fresh electrolyte

[Groundloop]

@All,

Sorry, I have not been monitoring this thread for a while.

@totoalas,

I have sent you a email.

@luishan,

The arrow on the resistor means that this is a variable resistor (potmeter).

Groundloop.

[topper]

Hi,

I am new at forum and i searched for good battery charger and i found that topic. I saw a drawing that added "groundloop" (at first page of this topic) with trifilar air coil and one thing interests me most - do i need some oscillator or other device to get some frequency to charge or just by using 1 k pot?

Topper

[Groundloop]

Hi Topper,

Build the circuit as described in the drawing. Do not change anything.
This circuit will self oscillate, no need for anything extra. The BUX80
is hard to find these days, but the BUX98 is still in production (as
far as I know) and can be used instead. Other power NPN transistors
on heat sink can also be used.

Groundloop.

[topper]

Hi,

I searched in Poland for bux80 and i found that tranny about 5 $:).
http://inelsc.pl/pl/p/Tranzystor-BUX80/2448

I like ure design of charger its simple. I builded a circuit below but the coil is hot as hell so i abandoned it.
http://i291.photobucket.com/albums/ll303/TEEP_photos/DSSC.jpg

I read that u use 1mm thick wire so u can charge higher current.  I have three spools of wire 0,6 mm for making trifilar coil. I will be using plastic tube but at other dimensions as u posted about 160 mm diameter and please advice what should be resistance of single wire of trifilar coil to work properly. If i know resistance of coil i will know how many turns i should make?

Topper