DIY Electric Car Forums banner

1 - 6 of 6 Posts

·
Registered
Joined
·
70 Posts
Discussion Starter #1
http://www.buysellcommunity.com/sale/NAJQHTAP/Has anyone bought the coun=
seling =

service? Any sucess? Lawrence Rhodes...

_______________________________________________
| REPLYING: address your message to [email protected] only.
| Multiple-address or CCed messages may be rejected.
| UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
| OTHER HELP: http://evdl.org/help/
| OPTIONS: http://lists.sjsu.edu/mailman/listinfo/ev
 

·
Registered
Joined
·
70 Posts
Discussion Starter #2
On 9 Feb 2011 at 14:56, Lawrence Rhodes wrote:

> http://www.buysellcommunity.com/sale/NAJQHTAP/*Has anyone bought the
> counseling service?* Any sucess

Please read what I wrote about this in your "Tesla Charger" thread, just
yesterday.

http://evdl.org/archive/#nabble-td3265597%7Ca3276118

Also read what Lee Hart said.

http://evdl.org/archive/#nabble-td3265597%7Ca3276197

To reiterate yet one more time :

THERE ARE NO MIRACLE CURES for worn-out batteries. At best, these tricks
and gimmicks give your battery a little more capacity for a short time. The
main thing they do is move little pieces of green paper from your wallet to
the seller's.

David Roden
EVDL Administrator
http://www.evdl.org/
 

·
Registered
Joined
·
70 Posts
Discussion Starter #3
it's no secret, there are two ways that I know of. the best way is using
magnesium sulfate [epsom salt] one part water one part epsom salt heated in
microwave oven until clear. one tablespoon per auto battery cell for lead
acid battteries, charge and discharge several times to break up sulfates and
increase battery potential,sometimes more than when new, sometimes internal
damage to the battery makes battery poor candidate for renewal. the other
way is draining the battery ,rinsing ten times, adding a mixture of baking
soda and water [one cup per gallon] leave for 24 hours, then drain and rinse
ten times. Add new electrolyte for best results using either method. good
luck, danl

EVDL Administrator <[email protected]> wrote:

> On 9 Feb 2011 at 14:56, Lawrence Rhodes wrote:
>
> > http://www.buysellcommunity.com/sale/NAJQHTAP/ Has anyone bought the
> > counseling service? Any sucess
>
> Please read what I wrote about this in your "Tesla Charger" thread, just
> yesterday.
>
> http://evdl.org/archive/#nabble-td3265597%7Ca3276118
>
> Also read what Lee Hart said.
>
> http://evdl.org/archive/#nabble-td3265597%7Ca3276197
>
> To reiterate yet one more time :
>
> THERE ARE NO MIRACLE CURES for worn-out batteries. At best, these tricks
> and gimmicks give your battery a little more capacity for a short time.
> The
> main thing they do is move little pieces of green paper from your wallet to
> the seller's.
>
> David Roden
> EVDL Administrator
> http://www.evdl.org/
>
>
>
> _______________________________________________
> | REPLYING: address your message to [email protected] only.
> | Multiple-address or CCed messages may be rejected.
> | UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
> | OTHER HELP: http://evdl.org/help/
> | OPTIONS: http://lists.sjsu.edu/mailman/listinfo/ev
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.sjsu.edu/mailman/private/ev/attachments/20110210/957affa3/attachment.html
_______________________________________________
| REPLYING: address your message to [email protected] only.
| Multiple-address or CCed messages may be rejected.
| UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
| OTHER HELP: http://evdl.org/help/
| OPTIONS: http://lists.sjsu.edu/mailman/listinfo/ev
 

·
Registered
Joined
·
70 Posts
Discussion Starter #4
On 10 Feb 2011 at 10:12, Dan Payne wrote:

> using magnesium sulfate ... [or] draining the battery, rinsing ten
> times ... Add new electrolyte ...

These methods attempt to remove or bind lead sulfate that has been shed from
the plates. The second one may help in some cases where the sulfate has
piled up so deep in the bottom of the cells that it's shorting the grids.
But by the time the battery is this badly sulfated, the active material
remaining in the grids is very low.

Adding fresh high-SG electrolyte will seem to increase the capacity (though
to far from new level). However, if you actually try to use this capacity,
you will be over-discharging the depleted plates. This will just accelerate
the battery's ultimate demise.

As I said, all the tricks for "fixing" depreciated batteries give temporary
improvement at best.

What's more, the drain-rinse-and-refill technique leaves you with a large
quantity of liquid containing lead sulfate and other contaminants. You have
to dispose of it in a safe, responsible manner. This is a signficant
concern, especially when you're working with a half-ton or so of lead.

These methods are a lot of effort for very little gain. The only real fix
for a worn-out battery is replacement. (And no, I don't work for the
battery business.)

David Roden - Akron, Ohio, USA
EVDL Administrator

= = = = = = = = = = = = = = = = = = = = = = = = = = = = =
EVDL Information: http://www.evdl.org/help/
= = = = = = = = = = = = = = = = = = = = = = = = = = = = =
Note: mail sent to "evpost" and "etpost" addresses will not
reach me. To send a private message, please obtain my
email address from the webpage http://www.evdl.org/help/ .
= = = = = = = = = = = = = = = = = = = = = = = = = = = = =


_______________________________________________
| REPLYING: address your message to [email protected] only.
| Multiple-address or CCed messages may be rejected.
| UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
| OTHER HELP: http://evdl.org/help/
| OPTIONS: http://lists.sjsu.edu/mailman/listinfo/ev
 

·
Registered
Joined
·
70 Posts
Discussion Starter #5
We have one old geezer in our town that can repair batteries, by removing
the tops and grids. This is much easier with 2 volt cells that have
removable tops like they have in electric fork lifts.

If the grids have lost most of the paste or becomes very soft, then the
grids are cut from the buss bars, clean and repasted. You can get new PBO2
positive and PB negative paste that comes in premix 5 gallon containers.

You can also get new grids, separators, cases, tops, lead, sealants and
fixing compound. Just search any of theses items in you search engine if you
want to go into battery repair and/or battery manufacturing.

You can get a desk size battery assembly machine that can be is use to apply
the paste to the grids, melts battery lead to connect the grids together and
form new battery terminals. You can do this all by hand if you are good at
lead welding with a special lead torch that has a long pencil thin flame.

You can actually do this battery repair with multi-cell batteries by melting
the sealant that glues the top cover on. Most of the time, you may have to
cut the cover off which you can replace with a new battery container and
top.

The most important thing, is to measure the specific gravity of the
electrolyte that is remove and replace it with the same SG reading. Lets
say the SG reading of the electrolyte was 1.200 SG, then you can replace
that with new 1.200 SG. If you read 1.200 SG, this means the negative
plates still has about 0.075 SG acid infuse into them which when the battery
is charge, will raise the electrolyte another 0.075 to the correct 100% SOC
to 1.275 SG.

Roland




----- Original Message -----
From: "EVDL Administrator" <[email protected]>
To: "Electric Vehicle Discussion List" <[email protected]>
Sent: Thursday, February 10, 2011 8:49 AM
Subject: Re: [EVDL] Vancouver man selling secret to battery rejouvenation.


> On 10 Feb 2011 at 10:12, Dan Payne wrote:
>
> > using magnesium sulfate ... [or] draining the battery, rinsing ten
> > times ... Add new electrolyte ...
>
> These methods attempt to remove or bind lead sulfate that has been shed
> from
> the plates. The second one may help in some cases where the sulfate has
> piled up so deep in the bottom of the cells that it's shorting the grids.
> But by the time the battery is this badly sulfated, the active material
> remaining in the grids is very low.
>
> Adding fresh high-SG electrolyte will seem to increase the capacity
> (though
> to far from new level). However, if you actually try to use this
> capacity,
> you will be over-discharging the depleted plates. This will just
> accelerate
> the battery's ultimate demise.
>
> As I said, all the tricks for "fixing" depreciated batteries give
> temporary
> improvement at best.
>
> What's more, the drain-rinse-and-refill technique leaves you with a large
> quantity of liquid containing lead sulfate and other contaminants. You
> have
> to dispose of it in a safe, responsible manner. This is a signficant
> concern, especially when you're working with a half-ton or so of lead.
>
> These methods are a lot of effort for very little gain. The only real fix
> for a worn-out battery is replacement. (And no, I don't work for the
> battery business.)
>
> David Roden - Akron, Ohio, USA
> EVDL Administrator
>
> = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
> EVDL Information: http://www.evdl.org/help/
> = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
> Note: mail sent to "evpost" and "etpost" addresses will not
> reach me. To send a private message, please obtain my
> email address from the webpage http://www.evdl.org/help/ .
> = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
>
>
> _______________________________________________
> | REPLYING: address your message to [email protected] only.
> | Multiple-address or CCed messages may be rejected.
> | UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
> | OTHER HELP: http://evdl.org/help/
> | OPTIONS: http://lists.sjsu.edu/mailman/listinfo/ev
>

_______________________________________________
| REPLYING: address your message to [email protected] only.
| Multiple-address or CCed messages may be rejected.
| UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
| OTHER HELP: http://evdl.org/help/
| OPTIONS: http://lists.sjsu.edu/mailman/listinfo/ev
 

·
Registered
Joined
·
70 Posts
Discussion Starter #6
good information, thanks

EVDL Administrator <[email protected]>wrote:

> On 10 Feb 2011 at 10:12, Dan Payne wrote:
>
> > using magnesium sulfate ... [or] draining the battery, rinsing ten
> > times ... Add new electrolyte ...
>
> These methods attempt to remove or bind lead sulfate that has been shed
> from
> the plates. The second one may help in some cases where the sulfate has
> piled up so deep in the bottom of the cells that it's shorting the grids.
> But by the time the battery is this badly sulfated, the active material
> remaining in the grids is very low.
>
> Adding fresh high-SG electrolyte will seem to increase the capacity (though
> to far from new level). However, if you actually try to use this capacity,
> you will be over-discharging the depleted plates. This will just
> accelerate
> the battery's ultimate demise.
>
> As I said, all the tricks for "fixing" depreciated batteries give temporary
> improvement at best.
>
> What's more, the drain-rinse-and-refill technique leaves you with a large
> quantity of liquid containing lead sulfate and other contaminants. You
> have
> to dispose of it in a safe, responsible manner. This is a signficant
> concern, especially when you're working with a half-ton or so of lead.
>
> These methods are a lot of effort for very little gain. The only real fix
> for a worn-out battery is replacement. (And no, I don't work for the
> battery business.)
>
> David Roden - Akron, Ohio, USA
> EVDL Administrator
>
> = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
> EVDL Information: http://www.evdl.org/help/
> = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
> Note: mail sent to "evpost" and "etpost" addresses will not
> reach me. To send a private message, please obtain my
> email address from the webpage http://www.evdl.org/help/ .
> = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
>
>
> _______________________________________________
> | REPLYING: address your message to [email protected] only.
> | Multiple-address or CCed messages may be rejected.
> | UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
> | OTHER HELP: http://evdl.org/help/
> | OPTIONS: http://lists.sjsu.edu/mailman/listinfo/ev
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.sjsu.edu/mailman/private/ev/attachments/20110210/c184f7b1/attachment.html
_______________________________________________
| REPLYING: address your message to [email protected] only.
| Multiple-address or CCed messages may be rejected.
| UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
| OTHER HELP: http://evdl.org/help/
| OPTIONS: http://lists.sjsu.edu/mailman/listinfo/ev
 
1 - 6 of 6 Posts
Top