Fresh Batteries from Germany

[911s55]

I just recieved an email from Battery Sales in Florida stating that a new shipment of Sonnenschein DF75 batteries should arrive the week of 11/26/2012. These are a perfect fit battery for '69-'73 911's. I had 4 on hold but went with a WESTCO Miata type replacement instead. They only get a pallet worth about every six months.

David
http://www.batterysales.com/sonnensc...evailerger.cfm

I just checked the website, a few months ago when they were unavailable the price was $170 now they are $190.

[Haasman]

Thanks for the notice- Is this the Miata battery you ordered?

http://www.westcobattery.com/index.php/miata-batteries

Haasman

[911s55]

Yes it is but I purchased from this vendor. $252.00 for two delivered, recieved three days after order and 100% charged. Great deal I think.

David

http://www.batteryweb.com/mazda-miata-batteries.cfm

[obrut]

As an option, the batteries from a Ford Ka are a perfect fit in early 911 battery boxes - and are both inexpensive and easy to obtain.

[Haasman]

Ryan are these Ford Ka batteries gel style or lead/acid?

David- that does sound like a great deal? Are these also sealed gel batteries?

I am looking for batteries that won't boil acid into the box in the event of an alternator mishap.

Haasman

[obrut]

Lead acid, but sealed from memory. Same DIN size as stock early 911, recessed terminals etc.

[911s55]

Haasman, here is some informative reading regarding lead acid, AGM and gell batteries.

http://en.wikipedia.org/wiki/VRLA_battery

[Haasman]

Very interesting wikipedia read-

"Comparison with flooded lead–acid cells

VRLA batteries offer several advantages compared with flooded lead–acid cells. The battery can be mounted in any position, since the valves only operate on overpressure faults. Since the battery system is designed to be recombinant and eliminate the emission of gases on overcharge, room ventilation requirements are reduced and no acid fume is emitted during normal operation. The volume of free electrolyte that could be released on damage to the case or venting is very small. There is no need (nor possibility) to check the level of electrolyte or to top up water lost due to electrolysis, reducing inspection and maintenance.[4]
Because of calcium added to its plates to reduce water loss, a sealed battery recharges much more slowly than a flooded lead acid battery.[5][6] Compared to flooded batteries, VRLA batteries are more sensitive to high temperature, and are more vulnerable to thermal run-away during abusive charging.[1] The electrolyte cannot be tested by hydrometer to diagnose improper charging, which can reduce battery life. [7][6]
AGM automobile batteries are typically about twice the price of flooded-cell batteries in a given BCI size group; gel batteries as much as five times greater. Less reliable than flooded lead acid [2]
Longer recharge time than flooded lead-acid
"Sealed" batteries cannot tolerate overcharging: overcharging leads to premature failure.
Shorter useful life."

Thanks 911s55

Haasman

[Haasman]

Einspritzer- which model/year car did you install them in? Do you remember which Sonnenschien model you chose?

Haasman

[gled49]

Would someone post the technical information on the label of the Gel (Sonnenschien) batteries for all to see. I,m out of town and can't get to mine. One failed and I gave up on them. The charging cycle info has a max voltage that is hard to stay below. The last ones I bought came with a overcharging warning. I believe I was told, and can anyone else confirm, that in spite of the batteries fitting perfectly in our dual battery boxes they are not automotive batteries. Gordon