battery desulfator

alv70d1999 · Feb 19th, 2010, 18:43

hi...

has anyone had or used a battery desulfator?

iv seen a few vids and seen a few designs but never spoke to anyone thats actually used one to see if it works..

think its a good or a bad idea??

Mike Arnold · Feb 19th, 2010, 23:11

I looked into them a year ago. They are based on the premise that if you pulse short sharp current spikes (about 10A) at a few hundred kHz, then it dislodges the sulphate coating that builds up. I knocked up a protype (using the inductive kick-back of a coil) but ran out of time so bought a C-Tec unit which seemed to restore the battery on an old car. My feeling is that when the battery is old you can never bring it back to the performance of a new one but if you don't need much cranking power it is probably worth thinking about.

Incidentally, the one thing that all the battery experts say is do not let the battery become discharged for any length of time or it sulphates.

alv70d1999 · Feb 20th, 2010, 07:12

i just thought about getting one to prolong the battery life.

mines a diesel so it needs the amps.

RollingThunder · Feb 20th, 2010, 09:22

I use an Optimate to keep my Landrover battery in good shape - its been stood for a few years now but the battery is still A1. I also used it on my bikes for many years before that. Its not cheap but IMHO its worth it.

alv70d1999 · Feb 20th, 2010, 09:56

im looking at a small diy kit for 17 quid off fleabay.

its one you leave on the battery permanently.

looks like il be giving it a go!.

ShadeTek · Feb 20th, 2010, 16:29

You can revitalise car and NiCad cells by using a Mig welder. By tapping the electrodes on the battery contacts in reverse pole, then forward pole, this will bring the battery back to life after a charge. Here's a youtube video of the above.

+ YouTube Video

alv70d1999 · Feb 20th, 2010, 17:10

OMFG.... no way would i put a mig welder anywhere near a car battery.... thats commiting suicide.

ShadeTek · Feb 21st, 2010, 10:22

A friend of mine tried it with his drill Ni-cad and it is now back to normal, giving a full charge.

alv70d1999 · Feb 21st, 2010, 11:06

reconditioning batteries is an interesting read tbh..

Feb 19th, 2010, 18:43	#1
alv70d1999 I've Been Banned Last Online: Sep 28th, 2010 12:05 Join Date: Apr 2009 Location: button moon	battery desulfator hi... has anyone had or used a battery desulfator? iv seen a few vids and seen a few designs but never spoke to anyone thats actually used one to see if it works.. think its a good or a bad idea??

Feb 19th, 2010, 23:11	#2
Mike Arnold Master Member Last Online: May 16th, 2024 12:39 Join Date: Dec 2001 Location: Stockport, Gtr Manchester View Photos By: Mike Arnold	I looked into them a year ago. They are based on the premise that if you pulse short sharp current spikes (about 10A) at a few hundred kHz, then it dislodges the sulphate coating that builds up. I knocked up a protype (using the inductive kick-back of a coil) but ran out of time so bought a C-Tec unit which seemed to restore the battery on an old car. My feeling is that when the battery is old you can never bring it back to the performance of a new one but if you don't need much cranking power it is probably worth thinking about. Incidentally, the one thing that all the battery experts say is do not let the battery become discharged for any length of time or it sulphates. __________________ Mike Arnold. 1966 122S

Feb 20th, 2010, 09:22	#4
RollingThunder Grumpy Old Git Last Online: Apr 19th, 2024 09:16 Join Date: Dec 2004 Location: South Yorkshire View Photos By: RollingThunder	I use an Optimate to keep my Landrover battery in good shape - its been stood for a few years now but the battery is still A1. I also used it on my bikes for many years before that. Its not cheap but IMHO its worth it. __________________ S40 2.4i '07 Japanese import '96 850R - https://www.volvoforums.org.uk/showthread.php?t=312484 Ex Danish Embassy '96 940 GLE LPT - https://www.volvoforums.org.uk/showthread.php?t=326071

Feb 21st, 2010, 10:22	#8
ShadeTek Premier Member Last Online: Apr 20th, 2024 19:38 Join Date: Dec 2002 Location: Renfrewshire View Photos By: ShadeTek	A friend of mine tried it with his drill Ni-cad and it is now back to normal, giving a full charge. __________________ Tek-Emo Villis Emo Bis V70 SE NAV 1.6 D2 2015MY POWERSHIFT, D4162T, 93000miles, RED. /VOL FCR/PEPER OBD2/Acron 9135 OBD2/L.E.D Flasher/VDASH/ANCEL BA301/Topdon Top Scan

Feb 20th, 2010, 07:12	#3
alv70d1999 I've Been Banned Last Online: Sep 28th, 2010 12:05 Join Date: Apr 2009 Location: button moon	i just thought about getting one to prolong the battery life. mines a diesel so it needs the amps.

Feb 20th, 2010, 09:56	#5
alv70d1999 I've Been Banned Last Online: Sep 28th, 2010 12:05 Join Date: Apr 2009 Location: button moon	im looking at a small diy kit for 17 quid off fleabay. its one you leave on the battery permanently. looks like il be giving it a go!.

Feb 20th, 2010, 17:10	#7
alv70d1999 I've Been Banned Last Online: Sep 28th, 2010 12:05 Join Date: Apr 2009 Location: button moon	OMFG.... no way would i put a mig welder anywhere near a car battery.... thats commiting suicide.

Feb 21st, 2010, 11:06	#9
alv70d1999 I've Been Banned Last Online: Sep 28th, 2010 12:05 Join Date: Apr 2009 Location: button moon	reconditioning batteries is an interesting read tbh..

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