DIY Battery Desulfator

[Vertiga]

Just DIY a desulfator to be tested on a spare battery. Total cost less than $15 and all parts are available at Sim Lim Tower. So far, the testing showed it is working but the effects on the battery will have to wait as it can take as long as 4 weeks to get the results. The tips and circuits diagrams can be found on the following message board:

 

http://p198.ezboard.com/bleadacidbatterydesulfation

 

Have fun and keep the soldering iron hot.

Edited December 28, 2006 by Vertiga

[Dermocyma]

i m interested. can u post some pictures of ur completed DIY desulfator?

and is it the highpower version? 12V 90Ah battery can use?

[Genie47]

I posted this design some time back. Nobody wanted to take up the project.

 

http://www.mycarforum.com/forum/gforum.cgi...1168679#1168679

Edited December 28, 2006 by Genie47

[Yeobh]

The " pressure cooker" test comes when you try to place the unit in the engine bay. The high temp, vibration and suphaled fume will kill the home make unit in no time. Good try , keep on going

[Orixy]

Great that u managed to DIY the desulphator yourself!

 

I recently read abt this batt desulphator in MCF and eventually got myself a Sulfarid for $47 from our neighbour up north.

 

Well, my 1yr 8mnths old batt that came with my new car was around 14.5v during engine running and around 12.2v when off. After installing the Sulfarid for 3 weeks now, I recently found that voltage maintained at 12.5v when engine just switch off but eventually dropped to 11.8v after sometime...

The Sulfarid has this LED indicator and the red LED lighted up to warn of my batt low voltage.

 

Well, it could well be my batt going to die soon but I was hoping the Sulfarid could do some wonders to bring it back to life but it didnt... i shall monitor for another week see if miracle does happen. If not I shall dump the batt and install a new one.

[Lukesky]

hmm i also got check out this sulfarid.. but if it can't even bring a 1 year 8 mths batt back to life then duno is it worth it to get?

[Orixy]

Maybe u can hear out some other guy's comments cos my batt has been thru some bad times when I off my engine and blast my music while waiting for my wife... this shld drain quite a bit of juice from it.

 

Even though my batt voltage dropped to 11.5v after over a day of non-driving, I could still start my engine with one crank. Just hope that It wont die on me one fine day...

Edited January 3, 2007 by Orixy

[Kklee]

Is yours a MF or normal battery?

[Gadgeter]

Hperlink:

 

http://p198.ezboard.com/bleadacidbatterydesulfation

[Orixy]

My stock batt is 'GS' brand normal batt that needs to top up batt water.

[Kklee]

IMHO, the battery charging voltage seems ok. If the battery is depleted, usually the charging voltage would be slightly lower. As for the 11.8V, it is a bit of concern. Maybe the battery could have be "damaged" by an instance where the battery water was low till it shows the plates. Maybe good to change battery just in case to save the nightmares of being stranded.

 

If you have to frequently top up battery water, would recommend MF battery.

 

BTW, what's your ride?

[Cmtan1]

I have read quite alot about desulphater, but one question remains.

 

Does it really work?

 

Many are skeptical if the device work. I am also beginning to question it because I am not fully convince of the explaination that the sulphate molecules that attached to the lead plate will get dislodge by the pulsing from the desulphater.

 

Has anyone prove it? Please enlighten me with test results.

[Orixy]

Yah, agree that the charging voltage looks ok.

 

I'm those type that will frequently check all my car's fluid so my batt has never fallen to even half level. Maybe really too much ICE when engine is off... I have 4channel amp + 12" subwoofer.

 

Yah, considering to change to MF batt very soon. BTW, I driving a mit lancer.

[Yeobh]

I did check with few of my overseas suppliers for 12v desulfators regarding the different types and mothod of breaking down the sulphate costing but apparent all are retailing at not less than USD 105 per unit in their markeplaces.The price did not include postage and handling charges.The one from the north seems to very very very low cost. All desulfators powered directly by the vehicle battery without any 220v source will need about 0.2 to 0.4 watt of power even when the engine is stwich off.

Check your alternator output, if it is not doing a good job, ultimately the battery power will be drain off.

[Kklee]

IIRC, parasitic drain is bad for the battery in the long run. Don't think your ICE is parasitic nature, more like VAMPIREish! Do take precaution not to get stranded

[Kklee]

IMHO, results will vary depending on the condition of the battery, the battery load and the charging circuit unless someone comes up with a start procedure.

[Orixy]

I see... how do I check if alternator is working properly aside form getting the gadget you showed in other posts? Any more "cost effective" method?

[Yeobh]

Use a voltmeter. Rev engine to 2,500rpm , switch on all the headlight and electrical accesories to max - alternator should charge the battery at 13.8 volt